Company visit: Digital Nutrition explores health through sound Kwon O-yeong, real-estate reporter Published 2026.06.11 11:46   As digital healthcare evolves from a focus on medical devices and wearables toward services embedded in everyday life, a company using auditory-stimulation technology to explore a new wellness market is attracting attention. Digital healthcare company Digital Nutrition is developing sound-based health-management solutions for everyday concerns including sleep, stress, concentration, and eating habits, as it grows as a digital wellness business. The company offers digital healthcare services centered on SoundPill, its functional sound-content platform. SoundPill is designed to do more than offer music for listening: it uses auditory-stimulation technology with the aim of supporting users’ emotional and physical states, offering content for sleep, stress relief, concentration, meditation, and appetite management.     Digital Nutrition continues clinical research and scientific evaluation through a network of medical experts and partnerships with research institutions. The report states that it had established a research-cooperation network with more than 1,200 medical professionals and was strengthening confidence in its technology through patents and clinical research in digital healthcare. It had recently expanded its business by combining digital healthcare with sectors including housing, appliances, insurance, and fitness. With Hyundai E&C, it was jointly developing residential wellness services and providing restorative sound solutions aimed at improving residents’ quality of life, particularly in premium housing. With LG Electronics, it was supplying SoundPill content through the LG ThinQ platform and researching personalized health sounds using appliance data. With DB Life, it was building a healthcare model connecting insurance and digital wellness services. This cross-industry business model was also attracting attention in the senior sector and housing for older adults. As Korea enters a super-aged society and demand grows for a longer healthy lifespan and preventive healthcare, the report describes potential applications for Digital Nutrition’s nonmedical everyday health-management solutions in retirement communities, senior residences, and age-friendly housing.   Digital Nutrition was also stepping up its move into sports. It had been selected for the Ministry of Culture, Sports and Tourism’s 2026 Sports Industry Startup Growth Program, establishing a basis for expansion into sports and fitness. The company planned to introduce services connecting sleep-support and appetite-management technologies with recovery programs before and after exercise, aiming to support performance and mental recovery. It was also pursuing digital-medical-device authorization for a sleep-support solution based on cognitive behavioral therapy. The company was conducting a confirmatory clinical trial as it prepared to enter the digital-therapeutics market. Its strategy was to develop into an integrated healthcare platform connecting medical care and wellness. CEO Kim Na-young said, ‘Our goal is to support healthier lives through innovative healthcare solutions using auditory-stimulation technology. We will work across housing, insurance, sports, the senior sector, and other fields to lead the digital healthcare market.’ As a super-aged society and the digital healthcare era emerge, the focus of health management is shifting from treatment toward prevention and everyday management. Through sound, one of the most familiar media in daily life, Digital Nutrition aims to make healthcare services easy to access and present new possibilities for the wellness industry.   Kwon O-yeong, real-estate reporterkweon692@naver.com

Digital Nutrition selected for the 2026 sports-industry startup growth program Lee Sang-hyeon2026. 6. 4. 17:36 Digital Nutrition, led by CEO Kim Na-young, announced on the 4th that it had been selected for the Ministry of Culture, Sports and Tourism’s 2026 Sports Industry Startup Growth Program in recognition of its auditory-stimulation technology. The company provides SoundPill, a functional sound-content solution based on clinical evidence, and SoundThin, an auditory-stimulation-based weight-management solution. The report described selection for the program as the start of a more focused move into sports. It anticipated that combining sounds intended to help sleep and suppress appetite with sports infrastructure could create value by supporting performance around exercise and mental recovery. Digital Nutrition had supplied sound solutions to leading companies across industries, including LG Electronics, Hyundai E&C, DB Life, and Hanwha Resorts, and had recently expanded its business by supplying functional sounds to premium fitness brand Resort People. The company had recently begun work toward authorization of a Class 2 digital medical device for a CBT-based sound solution intended to help people fall asleep. At the time of the report, it planned to finish a confirmatory clinical trial that year and complete the authorization process the following year. Digital Nutrition CEO Kim Na-young said, ‘Selection for this program marks the start of our more focused expansion into sports and fitness. We will lead the digital healthcare market by developing innovative auditory-stimulation solutions.’   Reporter Lee Sang-hyeon, lshb01@asiae.co.kr Copyright © The Asia Business Daily. Unauthorized reproduction or redistribution prohibited.

Hanwha Hotels & Resorts and Digital Nutrition offer a sleep-themed guest event   Reporter Pyeon Seong-hui 2025.12.22 09:56 [Photo provided by Hanwha Hotels & Resorts] Hanwha Hotels & Resorts was working with digital healthcare company Digital Nutrition on a special event intended to support a restful night for guests. ‘Sleepmaxxing,’ a term combining ‘sleep’ and ‘max,’ had recently drawn attention among younger generations. It refers to efforts to improve sleep quality. According to the Korea Sleep Industry Association as cited in the report, Korea’s sleep market was growing from around KRW 480 billion in 2011 to around KRW 5 trillion in 2025. Hanwha Hotels & Resorts prepared the event to help year-end resort guests enjoy a comfortable night. [Photo provided by Hanwha Hotels & Resorts] The event was for guests in the jazz, pop, and R&B Music Rooms at Hanwha Resort Haeundae. Guests were to receive a trial pass for Digital Nutrition’s SoundPill sound-therapy service and a 7-day supply of EasyRest, a health supplement for a sleep routine. SoundPill is an auditory digital solution that lets users select content for situations and purposes such as falling asleep, easing stress, and concentrating. The trial pass was accessible through a QR code in the Music Room. [Photo provided by Hanwha Hotels & Resorts] EasyRest is a chewable product based on theanine and vitamin D. The report described strong purchase satisfaction and rapid word of mouth after launch. Guests completing a QR-code survey were also to receive a 7-day supply of EasyRest on a first-come, first-served basis. The event was scheduled for December 25–31. Further details were available on the Hanwha Resorts website. A Hanwha Hotels & Resorts representative said, ‘We are pursuing various collaborations with startups discovered through the Gangwon Center for Creative Economy & Innovation’s open-innovation program in September this year, including digital healthcare at Hanwha Resort Haeundae, an AI fragrance piano at Hanwha Resort Pyeongchang, and media art at Hanwha Resort Gyeongju. We plan to expand experience-centered content to further improve the customer experience.’

Published 2025.10.17 17:39:25 19 companies take part, including startups selected through the open competition [Seoul = Newsis] Hyundai E&C said it held the 2025 Hyundai E&C Open Innovation Day at COEX in Samseong-dong on the 17th. (Photo provided by Hyundai E&C) 2025.10.17. photo@newsis.com. *Resale and database use prohibited. [Seoul = Newsis] Reporter Jeong Jin-hyeong — Hyundai E&C announced that it held the 2025 Hyundai E&C Open Innovation Day at COEX in Samseong-dong on the 17th. The event introduced startups selected in the company’s 2025 startup competition and shared cooperation outcomes. Around 150 people attended, including Hyundai E&C employees and representatives from the Seoul Business Agency, Korea International Trade Association, venture-capital firms, accelerators, and other startup-support and partner organizations. Held annually since 2022, Hyundai E&C’s startup competition is an open-innovation program for working with startups that have innovative technologies to improve construction-site productivity and identify new growth opportunities. Sessions included startup investor pitches and examples of collaboration with Hyundai E&C, sharing insights into cooperation between large companies and startups in smart construction, future housing, lifestyle, environmental technology, digital transformation, and smart safety. Startup exhibition booths also introduced technologies and services and provided opportunities for business meetings. A total of 19 companies took part: 12 startups selected in the first-half 2025 competition, Hyundai E&C × Seoul Startup Open Innovation—Parallel Space, Watt, Greenroof, Moti, Biobytes, Ourspot, iKUKA, Planning Nature, Tilda, Deeping Source, Guardian Works, and C-Tech Solution; 4 selected in the second-half competition, Hyundai E&C × Korea International Trade Association Open Innovation Challenge—Remobility, Digital Nutrition, Elfin, and All AI; and 3 continuing to collaborate after proof-of-concept work with Hyundai E&C—60Hertz, Mobinn, and Aplays. Since 2022, Hyundai E&C had participated in around 30 startup-support programs, including its own competition, selecting around 100 startups to promote shared growth in construction and internal innovation through open innovation. Selected startups were pursuing cooperation with Hyundai E&C in proof-of-concept testing, joint R&D, joint commercialization, and new-product development. A Hyundai E&C representative said, ‘This was a meaningful opportunity to introduce the excellent technologies and services of the startups we have discovered to construction-industry participants and the public, and to share the outcomes of our open innovation. We will accelerate future innovation and growth through support including scaling up, investment fundraising, and incubation, so we can grow together with startups.’ ◎ Newsis, formation@newsis.com Copyright © NEWSIS.COM. Unauthorized reproduction or redistribution prohibited.

Reporter Choi Tae-beomPublished 2025.09.24 16:01 Woori Bank headquarters hosts a PR day with Unicorn Factory on the 24th Dinno’s PR Day on the fourth floor of Woori Bank headquarters in Jung-gu, Seoul, on the afternoon of the 24th. / Photo: Reporter Choi Tae-beom The fourth floor of Woori Bank headquarters in Jung-gu, Seoul, on the afternoon of the 24th. Around 150 people gathered at Dinno’s PR Day, hosted by Woori Financial Group’s startup acceleration program Dinno Lab, despite heavy rain. Under the theme ‘Show Me the Dinno Lab,’ the event was co-hosted by Dinno Lab and MoneyToday’s startup media platform Unicorn Factory. A showcase in which 10 Dinno Lab companies presented their technologies and services formed the center of the event, alongside a range of exhibition booths. In the Dinno’s Company Brand Zone, exhibitors included Urban Labs (coffee-ground upcycling), New-I (Tax-I, a service estimating capital-gains-tax refunds), DevD (Jibup Pay, a rent-by-card service), CCCV (decentralized identity management), CrossHub (identity verification for foreign nationals), and Linsol (smart safety equipment). Other participants included Digital Nutrition (sound-effectiveness evaluation), 4Natures (carbon reduction using microalgae), Tomorrow (identity verification for mobile payments by foreign nationals), S&E Company (forward trading of imperfect produce), and Tilda (business-decision optimization). A total of 11 companies introduced their business models and core services or products. Urban Labs CEO Kim Seon-hyeon said, ‘Dinno Lab has put a lot of effort into the booths, so we expect them to help us promote our products. We are currently raising investment and hope this will also support our investor presentations.’ Dinno’s PR Day on the fourth floor of Woori Bank headquarters in Jung-gu, Seoul, on the afternoon of the 24th. / Photo: Reporter Choi Tae-beom The Dinno’s Pop-up Store in the lobby featured Stockeeper, I&Na, Humil, Bamam, Freshour, Christine Company, Linkup, Bluefrog, and Peach, with products from 9 Dinno Lab companies. Traditional Korean liquor, Korean beef, cleansing juice marketed for constipation, baby products, pet food, athleisure shoes, Jeonju travel packages, and other products were on display. Visitors made purchases throughout the area, adding to the atmosphere. On a separate stage, 6 companies—DevD, Linkup, Digital Nutrition, S&E Company, Peach, and Stockeeper—were interviewed by Unicorn Factory reporters. Their stories were to appear in its ‘Startup UP Story’ series. The main showcase, hosted by professional MC Park Tae-yang, began with a talk titled ‘Investor Presentations That Move an Audience,’ aimed at strengthening startups’ PR and sales capabilities. Specific advice from venture-capital and journalism perspectives drew attention. MoneyToday Executive Director Song Gi-yong, Deputy Editor Lim Sang-yeon, Woori Financial Group Digital Innovation Vice President Ok Il-jin, and other participants pose at the MoneyToday Unicorn Factory × Woori Financial Dinno Lab Joint PR Day, held at Woori Bank headquarters in Jung-gu, Seoul, on the afternoon of the 24th. / Photo: Reporter Kim Chang-hyeon, chmt@ Gyeong Guk-hyeon, a managing director at Woori Venture Partners, said that from a VC’s perspective he focuses on 3 things: the team, the market as an opportunity, and the business model’s growth potential. ‘The most important thing is understanding what the listener—the investor—needs and communicating it well,’ he said. Unicorn Factory reporters Ryu Jun-yeong, Nam Mi-rae, and Go Seok-yong offered advice, respectively, on FameLab-style explanations of difficult technology, hooks that make an audience curious enough to seek a follow-up meeting, and demonstrating a real product or model rather than relying on a pitch deck. Full presentations followed from 10 companies: CrossHub, DevD, I&Na, Linkup, CCCV, Linsol, Urban Labs, Freshour, Digital Nutrition, and 4Natures. Peach CEO Kang Seon-gu said, ‘Since being selected for Dinno Lab support, we have achieved several results, including joining the employee benefits mall for Woori Financial Group. We will accelerate our growth and move quickly toward our vision of making travel easy and convenient.’

Digital Nutrition, provider of SoundPill, an auditory-stimulation solution intended to support health based on medical evidence, was continuing clinical research into the sound content used in its solution. At the time of the report, results from 2 clinical trials had been published, with 1 further paper expected shortly. SoundPill provides functional sound content for everyday uses including concentration, stress relief, sleep, reduced food cravings, and meditation. The 2 published papers discussed in the report concerned concentration and food cravings. ‘Specific Rhythm Auditory Stimulation for Attention: A Pilot Randomized Controlled Trial,’ published that January in Clinical Psychopharmacology and Neuroscience with Professor Kang Dong-woo’s team in the Department of Psychiatry at Seoul St. Mary’s Hospital, reports a randomized controlled study. It measured the Attention Network Test, described in the report as assessing sustained attention, and the Frankfurt Attention Inventory, described as assessing response speed. Participants were assigned to Digital Nutrition sound, general sound such as classical or popular music, or no intervention. The report states that the Digital Nutrition sound group performed statistically significantly better on both measures than the other 2 groups. ‘Listening to Music Can Reduce Calorie Intake and Increase Satiety: A Systematic literature Review and Additional Pilot Study,’ published the previous November in EXERCISE SCIENCE with Professor Lee Ho-seong’s team in the Department of Exercise Medicine at Dankook University, used CAN-PRO (Computer Aided Nutritional Analysis Program) to assess participants’ food intake, eating habits, and satiety in advance. In the randomized controlled study, participants were assigned to Digital Nutrition sound or no intervention. The report states that intake was statistically significantly lower in the sound group, with a trend toward greater satiety, compared with no intervention. The article also refers to publication that March of ‘The Effectiveness of Rhythmic Auditory Stimulation for Stress Reduction: A Systematic Review and Meta-Analysis’ in the Journal of Korea Society for Wellness as part of the company’s work to build medical evidence for its solution. Digital Nutrition CEO Kim Na-young said, ‘Clinical trials using multichannel EEG measurements for the evidence-based sound functions have been completed, and we are now preparing papers for publication. We will continue accumulating reliable medical evidence and use more rigorous research to further strengthen the evidence for our solution’s effectiveness.’ Reporter Jeong Jin, peng1@asiae.co.kr <© The Asia Business Daily (www.asiae.co.kr), an economic-content platform for investors. Unauthorized reproduction or distribution prohibited.> | Source: The Asia Business Daily | https://www.asiae.co.kr/article/2025022716083256989

SoundPill Sound Notes SN04 The illustrative desk scene was created with AI. The comparison and note are editorial graphics. The same phone and the same track can sound different through another pair of earbuds. A 30% volume setting does not tell you the sound level reaching your ears in decibels (dB). If you change earbuds, check the level again rather than relying on your usual slider position. Why the same setting can sound louder The headphones, recording, EQ settings and placement in your ears can all change the sound you receive. Apple explains that there is no single volume setting it can recommend for every user and use. Your friend’s 30% setting cannot establish the level of your own earbuds. Halfway up a volume slider does not mean half the number of decibels. The same setting can produce a different level through another pair of headphones. A dB reading needs a location A phone can show you information about headphone playback or use its microphone to measure surrounding noise. Those tools are looking at different sounds. Save this guide to the numbers • Volume slider, %: the device’s output setting. The same percentage does not establish the same dB across headphones. • Headphone audio level, dB: playback level measured or estimated for a supported combination. Check its compatibility and accuracy limits. • Environmental sound meter, dB: sound at the microphone’s location. It is not the same as the level inside earbuds worn in your ears. The NIOSH Sound Level Meter app, for example, was developed to assess workplace noise. A reading taken with a phone on your desk cannot establish the level inside your earbuds. Holding an earbud against the phone’s microphone also does not recreate how it sits in your ear. What your phone may show you On a supported iPhone setup, Hearing in Control Center can show headphone audio levels, while Health stores listening history. Apple says these measurements are most accurate with Apple or Beats headphones; other headphones may use estimates based on the iPhone’s volume. Check which headphones produced the reading. Supported Galaxy devices offer Volume monitor, with daily and weekly audio records and high-volume alerts. Check the manufacturer’s instructions for your model and software. We have not tested the measurement accuracy of individual phones for this article. Keep track of time as well as the setting WHO advises keeping device volume at no more than 60% of maximum, alongside monitoring sound level, listening duration and repeated exposure. That percentage does not convert into one dB value for every pair of headphones. WHO’s weekly listening examples pair an average 80 dB with 40 hours and 90 dB with 4 hours. They illustrate how the recommended time falls as sound level rises. They do not predict an individual’s injury threshold or guarantee that listening up to a listed time is safe for everyone. Three checks when you change earbuds 1. Lower the volume before pressing play. If possible, readjust in a quiet place. 2. Check supported headphone audio-level information and listening history. A room-noise reading cannot replace it. 3. Look at how long you have listened today. Take quiet breaks between long listening sessions. A note to save What changed: earbuds / track or EQ / location Which number did I check: volume % / headphone playback dB / surrounding-noise dB Time listened today: ______ If headphone-level information is unavailable, write ‘not available’. Leave that gap instead of converting the slider percentage into a made-up dB reading. A question for a future note: Why can your music suddenly seem louder when you step off the subway? Sources checked Apple: Volume settings and actual sound levels https://www.apple.com/sound/faq.html Apple: Check headphone audio levels https://support.apple.com/en-au/guide/iphone/iph0596a9152/26/ios/26 WHO: Safe listening https://www.who.int/news-room/questions-and-answers/item/deafness-and-hearing-loss-safe-listening NIOSH: Sound Level Meter app https://www.cdc.gov/niosh/noise/about/app.html Samsung: Volume monitor https://www.samsung.com/us/support/answer/ANS10001357/ Checked 6 November 2026. Menus and availability should be checked for your device, software and region. For a healthier daily routine with SoundPill, informed by medical research! SoundPill offers sounds for different purposes, including sleep, stress management, concentration and appetite management. Select the official logo to open the SoundPill app page. Install the SoundPill app EasyRest for your bedtime routine EasyRest 63-tablet pack. Original Korean packaging shown. View the EasyRest 63-tablet pack #HeadphoneVolume #SoundLevels #ListeningHabits #SoundPill — Yeoun, SoundPill Editor © 2026 Digital Nutrition Co., Ltd. Unauthorized reproduction or copying is prohibited.

SoundPill Sound Notes SN02 Two labels do not necessarily describe the same thing. The illustrative scenes were created with AI. The comparison and checklist are editorial graphics. You search for a rain recording and find ‘ASMR’ and ‘white noise’ in the same title. Are they two names for the same thing? They describe different things. ASMR begins with a listener’s response to certain triggers. White noise describes how a sound’s energy is distributed across frequencies. ASMR starts with a response ASMR refers to a pleasant tingling sensation associated with triggers such as whispering, light tapping or delicate hand movements. Not everyone experiences it. Enjoying a recording does not necessarily mean feeling tingles. The 2018 Poerio study compared people who identified as ASMR experiencers with people who did not. An illustrative close-up listening scene, not a demonstration of a response or an app feature. ‘ASMR’ is also used as a content label. Treat it as a clue to what you might hear or see, rather than a promise about how you will feel. White noise describes the sound Technically, white noise has equal energy per hertz within a specified frequency range. It is not defined by whether a listener finds it pleasant. A rain or fan recording is not necessarily technically white noise. The title alone cannot establish its frequency distribution. A rain recording’s title does not establish its frequency distribution. Why put both names on a rain recording? The words can serve different purposes in an online title: one suggests a kind of content or response, while the other is sometimes used broadly for a sound to play in the background. That is a way of reading a title, not a measurement of the recording. When choosing something to listen to, the useful question is whether the recording contains the sounds you actually want. Save this listening checklist Want to listen closely to small details? → Check for close-up whispers, tapping or other distinct sounds. Want something to leave in the background? → Check whether speech or distinct events keep entering the recording. Dislike sudden changes? → Check for thunder, sound effects or large jumps in level. Save it as a recording-selection checklist, not a comparison of treatment effects. These are practical preview filters, not rules for treatment or a ranking of health benefits. Sample more than the opening: speech or a louder event may appear later. If a recording keeps bothering you, turn it down, stop it or choose another. You do not have to make yourself like it because the title says ASMR. Start with what you want today: something to listen to closely, or something to play in the background while you do something else. Curious about the noise colours? Read the previous Sound Note and save the white, pink and brown noise comparison https://digitalnutrition.info/en/blog/?uid=117590&mod=document A question we plan to explore next: why do some rain recordings keep catching your attention? SoundPill Sound Notes explores the everyday questions that come up when you choose what to hear. Sources ASMR definition and individual differences: Poerio et al., PLOS ONE(2018) https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0196645 Technical definition of white noise: ASHRAE Handbook, Sound and Vibration https://handbook.ashrae.org/Handbooks/F21/SI/F21_Ch08/F21_Ch08_si.aspx For a healthier daily routine with SoundPill, informed by medical research! SoundPill offers sounds for different purposes, including sleep, stress management, concentration and appetite management. Select the official logo to open the SoundPill app page. Install the SoundPill app EasyRest for your bedtime routine EasyRest 63-tablet pack. Original Korean packaging shown. View the EasyRest 63-tablet pack #SoundPill #ASMR #WhiteNoise #RainSounds #SoundNotes — Yeoun, SoundPill Editor © 2026 Digital Nutrition Co., Ltd. Unauthorized reproduction or copying is prohibited.

English editorial edition by the SoundPill team, based on the original Dr. Gyu article. Updated 6 November 2026 against the sources below. This edition does not establish that one headphone type is safer for everyone. Can bone-conduction headphones affect your hearing even though they leave your ears open? Bone-conduction headphones leave the ear canals open and transmit vibration through the head. They still involve the cochlea, the hearing organ in the inner ear. An open-ear design therefore does not make the inner ear immune to excessive sound exposure. 1. A different route to the inner ear Both routes involve the inner ear; the diagram does not compare device output or clinical risk. With ordinary air-conduction earphones, sound travels through the ear canal, eardrum and middle-ear bones. Bone-conduction devices use a different transmission route that can bypass the outer and middle ear. Both routes can stimulate the cochlea. Henry and Letowski’s technical report explains these pathways. It does not show that every air- and bone-conduction device delivers equal energy or has equal long-term hearing risk. A volume-slider position alone cannot establish that comparison. Loud sound can damage sensory hair cells in the inner ear and cause permanent hearing loss. Very intense sounds can also injure other ear structures. 2. Open ears in a noisy setting The cited listening-level study used conventional earphones, not bone-conduction headphones. Background noise can make music harder to hear and can prompt listeners to choose a higher playback level. This is a reason to consider the listening environment, rather than assume an open-ear device will always be comfortable at the same setting. Fligor and Ives’ 2006 conference report studied 100 normal-hearing doctoral students using four conventional earphones. Selected music levels varied with background noise and passive isolation. The tested models did not include bone-conduction headphones. This study did not measure new hearing loss or establish that listeners unconsciously turn bone-conduction devices to maximum volume. 3. Level and exposure time matter The level and duration of sound exposure matter; breaks do not repair permanent injury. Noise-related injury can involve several physical and biological processes. The practical point for everyday listening is that louder sound and longer or repeated exposure increase hearing risk. Human sensory hair cells do not normally regrow after they are destroyed. Quiet breaks reduce further exposure. They do not reverse permanent injury. 4. A practical listening check A practical listening check. Discomfort is a reason to stop, not a diagnosis. Begin at a lower setting. Readjust in a quiet place. A familiar percentage does not guarantee the same output from a different headset. Reduce the need to turn music up. Well-fitted noise-cancelling headphones can reduce the need to turn music up in noisy settings. The sources checked for this edition do not establish superior long-term hearing protection for every ANC device. Track time and take quiet breaks. A percentage or a fixed 60-minute interval alone cannot establish a universally safe listening dose. Remove a headset if it causes pain or a headache. Pain or a headache is a reason to stop, not a diagnosis. Persistent ringing or changes in hearing warrant professional advice. Takeaway: Choose a listening setup that helps you keep the level low and avoid prolonged loud exposure. The device category alone cannot certify safety. Sources checked for this English edition Henry, P., and Letowski, T. (2007). Bone Conduction: Anatomy, Physiology, and Communication. Army Research Laboratory. Technical account of transmission pathways; not a consumer hearing-loss trial. NIH / NIDCD: Noise-Induced Hearing Loss. Public guidance on sound exposure, inner-ear injury and prevention. Fligor, B. J., and Ives, T. E. (2006). Does Earphone Type Affect Risk for Recreational Noise-Induced Hearing Loss? Conference report on chosen listening levels using four conventional earphones; bone-conduction devices were not tested. WHO: Deafness and hearing loss — Safe listening (6 March 2026). Practical exposure guidance, not a guarantee for an individual listener or device. © 2025 Digital Nutrition Co., Ltd. Unauthorized reprinting and reproduction are prohibited. All contents are protected by copyright law. Unauthorized reproduction or redistribution is prohibited. Supporting a healthier everyday life with SoundPill, informed by medical evidence! Install the SoundPill app For a restful night: EasyRest, a chewable you can take before bed without water. View EasyRest 63 tablets

SoundPill Sound Notes SN01 White, pink and brown noise: how to choose what to listen to The comparison cards and listening worksheet in this article were created with AI. To choose a sound for today, compare the options at a low volume using the same device in the same place. Notice whether the higher tones stand out, the low rumble feels comfortable, or the sound changes abruptly. White, pink and brown noise differ in how their power is distributed across frequencies. The colours describe how power is spread across frequencies In ideal white noise, each frequency band of the same width contains the same amount of power. White noise contains a broad range of frequencies, so the high end can stand out. If the hiss catches your attention, listen for how prominent the higher frequencies are. In pink noise, power per hertz falls as the frequency rises. Compared with white noise, it can sound more weighted toward the low end. In brown noise, power per hertz falls more steeply as frequency rises, so it can sound deeper and heavier. Listen for whether that low rumble feels comfortable or too heavy for you. White noise has equal power in frequency bands of the same width. Listen for how much the high end stands out. Pink noise has less power per hertz at higher frequencies. Listen to the balance between the low and high end. In brown noise, power per hertz falls faster with frequency than in pink noise. Listen for whether the low rumble feels too heavy. The listening impressions vary with the recording and playback conditions. The three names describe different frequency distributions. A deeper sound on its own tells you little about how well it will suit you for sleep or concentration. A 2021 review of 38 articles on continuous white or similar broadband noise and sleep found mixed results and rated the certainty of evidence for better sleep as very low. Rain and fan sounds are often grouped under the label white noise. Real recordings may contain resonances, changes in volume or sudden sounds such as a raindrop hitting a surface. A title like Rain Sounds gives you too little information to classify the recording as white, pink or brown noise. Start with the same device and room The low end can sound different through your phone speaker and through earbuds. Start by comparing the sounds on the same device and in the same room. Recordings can differ in both level and frequency balance. Matching the volume setting on your phone can still leave differences in both the actual and perceived sound level. Set a low, comfortable volume for each recording. Play one sound, switch it off for a moment, then try the next. The pause gives you a chance to notice what bothered you. If you're tempted to turn up the volume to cover other sounds, try changing where you listen or where the speaker sits. If your ears feel uncomfortable, stop playback and take a break. Use the same device and room. Set a low, comfortable volume for each recording. A worksheet for the next time you choose a sound Recording: ____________________ When I want a sound: Before bed / While taking a break / While reading or working Listening conditions: Device and room What bothered me: High frequencies / Low rumble / Sudden changes What I'd look for next time: ____________________ Write down a feature you noticed so you can refer to it the next time you choose a sound. A line like ‘the low rumble felt too heavy’ is enough to guide your next choice. Write down what you actually heard alongside the colour label. You can refer to the note when you try another recording or device. Add the recording's title so you can find it again. How do ASMR and white noise differ? In a future Sound Note, we’ll look at the sound itself and how listeners may respond to it. Sources Power distribution across noise frequencies | MathWorks documentation https://www.mathworks.com/help/dsp/ref/colorednoise.html Listening volume and exposure time | WHO safe listening guidance https://www.who.int/news-room/questions-and-answers/item/deafness-and-hearing-loss-safe-listening About SoundPill | Digital Nutrition https://digitalnutrition.info/soundpill-we-do/ Riedy et al. (2021) https://pubmed.ncbi.nlm.nih.gov/33007706/ For a healthier daily routine with SoundPill, informed by medical research! SoundPill offers sounds for different purposes, including sleep, stress management, concentration and appetite management. Select the official logo to open the SoundPill app page. Install the SoundPill app EasyRest for your bedtime routine EasyRest 63-tablet pack. Original Korean packaging shown. View the EasyRest 63-tablet pack #SoundPill #WhiteNoise #PinkNoise #BrownNoise #SoundSelection — Yeoun, SoundPill Editor © 2026 Digital Nutrition Co., Ltd. Unauthorized reproduction or copying is prohibited.

Hello, J here from Behind the Product. There is something I keep coming back to when planning products that support sleep and rest. We can put a great deal of care into the descriptions and images on a product page, but there is only so much a screen can convey about a supplement that people need to experience for themselves. Over the past few months, we have held pop-ups at several venues and met visitors in person, giving them a chance to see the product up close and get a feel for its value. What an in-person experience can communicate People can experience a rest-focused supplement differently depending on their surroundings and how tired they usually feel. We felt that words and photos on a screen could not fully convey the support and reassurance the product offers. At the pop-ups, we took time to explain EasyRest in detail. When we talked visitors through things they might have skimmed past online, most of the people who listened connected with what we were saying. Those conversations showed us how much direct experience and discussion can help communicate a product’s value.   An enthusiastic response that carried over online Many of the people who came to the pop-ups had concerns of their own about rest. They did more than look around: they openly shared the sleep difficulties they had experienced and their day-to-day routines. Our data showed that some people who tried and bought the product at a pop-up were happy with it in everyday use and continued to reorder. Others recommended it to people they knew, leading to additional online orders. These results suggested that the usability people had experienced in person was finding a place in their daily lives. Sold out, and preparing for a third production run Thanks to the interest people showed us across the pop-ups, all the EasyRest stock we had prepared sold out. Requests to restock quickly kept coming in, and the whole team is now coordinating the third production run. We are taking care with the production process rather than simply rushing to replenish stock. After thorough quality checks, we expect the new batch to be reliably back in stock this coming January. We learned that meeting users and seeing their expressions and reactions in person gives us a clear sense of direction that goes beyond checking data from behind a screen. We will bring what we heard at these events into SoundPill as we work on further improvements to the app. I hope you can bring today to a comfortable, peaceful close.     © 2025 Digital Nutrition Co., Ltd. Unauthorized republication or reproduction is prohibited. All contents are protected by copyright law. Unauthorized reproduction or redistribution is prohibited. Wishing you a healthier everyday life with SoundPill, informed by medical evidence! Get the SoundPill app https://tosto.re/soundpill1   For a comfortable night: EasyRest, a bedtime chewable you can take without water. smartstore.naver.com/soundpill/products/12485349661

“While I’m eating, I think it’ll be fine. There’s just a little rice left, so I might as well finish it. Not much of that side dish left either. Then I get up and realize I’m too full. I should have left some. I keep doing it.” People do not necessarily sit down intending to eat a lot. They may even plan to eat a moderate amount. But as the meal goes on, they take one more spoonful, then another. Only when it is time to clear the table do they realize they have eaten more than they wanted to again. They want to manage how much they eat, but having to keep telling themselves ‘That’s enough now’ throughout every meal is not particularly comfortable either. They want to enjoy their food and finish at an amount that feels right for them. That is one reason people become interested in SoundPill’s appetite management sounds. *These AI-generated images are based on an actual interview. Q. Don’t you notice that you’re full while you’re eating? A. “I do. It’s just hard to stop right there. The food tastes good, and it feels wasteful to leave a little behind. It’s not as though I keep eating for ages. I just have a little more each time. But it adds up, and afterward I’m too full.” Q. How did you come across SoundPill? A. “I was looking for ways to manage my portion sizes and came across something about sounds played during meals and feeling full. I wondered what sound could possibly have to do with eating. So I looked for sounds to listen to while eating. SoundPill had an appetite management feature, and I wanted to hear what it sounded like.” SoundPill’s appetite management sounds are designed to support the management of food intake and feelings of fullness. Digital Nutrition creates its own sounds, choosing the rhythm, tempo, frequencies, timbre, and volume to suit the listening purpose. Q. So you play it while you eat? A. “Yes. I put it on when I sit down to eat. Rather than finishing the meal and thinking I’ve eaten too much again, I wanted to try getting some support while I was eating.” Tap the image to open SoundPill. Here is how to listen during a meal. 1. Choose an appetite management sound before eating. 2. Play it at a comfortable listening volume. 3. Pay attention to how full you feel as you finish your meal. Explore appetite management sounds in the SoundPill app → Research has also explored the relationship between sound, food intake, and feelings of fullness. In a pilot study published in 2024 involving 42 healthy women, the group that listened to a study audio track during a meal consumed fewer calories and reported greater fullness afterward than the group that ate in silence. Q. What about feeling that leaving food is wasteful? A. “It does feel wasteful. That’s why I keep finishing it. But I could put the leftovers away and eat them next time. I know that, yet if they’re in front of me, I end up eating them. I just want to stop when I feel comfortably full, without regretting it every time afterward.” Tap the image to open SoundPill. Listening does not have to be limited to mealtimes. Appetite management sounds can also be used on nights when late-night cravings are hard to resist. At your next meal, try starting a SoundPill appetite management sound as you sit down to eat. Listen to appetite management sounds in the SoundPill app → Support a healthier everyday life with SoundPill, informed by medical evidence!SoundPill is an app offering sounds for purposes such as sleep, stress, focus, and appetite management.Official SoundPill introduction · Tap the image to open the app.⬇️⬇️ Install the SoundPill app⬇️ EasyRest before bed, for difficult nights ⬇️ EasyRest, 63 tabletsExplore the 63-tablet product → #SoundPill #DigitalNutrition #AppetiteManagement #PortionManagement #Satiety #LateNightCravings #EasyRest — Director Kim Listens © 2026 Digital Nutrition Co., Ltd. Unauthorized republication or reproduction is prohibited.