Personal sound therapy for tinnitus
Designed to target the ringing itself.
DFCRS sound therapy personalises music with the aim of making tinnitus quieter. The idea: stimulate nearby hearing nerve cells to help calm the overactive signals linked to ringing.
No card needed. Full Care programme: €99 for 12 weeks.
About 22 points less impact on daily lifeAverage score drop with DFCRS · small 3-month study · see results ↓Practical coping lessons designed by
Hashir International Institute
Specialists in tinnitus research and care.
Aiming for quieter tinnitusPersonalised sound therapy powered by DFCRS
Build mental resiliencePractical skills to feel more in control when tinnitus is difficult
Relief while you listenAI-powered sound masking with Sound Lab
Sound therapy driven by DFCRS technology
Personalised sound. A regular routine. DFCRS adjusts music around the pitch of your ringing. Researchers propose that this stimulates nearby hearing neurons — nerve cells — which may help calm the overactivity linked to tinnitus.
The aim is to turn down the ringing itself. In the study, the DFCRS group rated their tinnitus as quieter after three months. They also reported better sleep and less impact on daily life. The study measured these experiences; it did not directly measure changes in nerve cells.
See what changed for people
Listen to a few sounds and choose the one closest to your ringing. No technical knowledge needed.
Choose music you enjoy. DFCRS adjusts the sounds around your ringing’s pitch, following the method studied by researchers.
Follow a listening routine and check in on your tinnitus. The study used at least two hours a day for three months.
From the idea to your own music
HearHush uses your sound match to adjust the music around your tinnitus pitch. Watch your track take shape, then return to it for your listening routine.
Explore your music libraryThe research behind the technology
Quieter ringing. Better sleep. Less disruption. In a study of 32 people, the DFCRS group reported bigger improvements in all five areas measured than the group listening to the same music without personalisation.
Less impact on everyday life
≈22points lower
The average drop in a questionnaire score measuring how much tinnitus affects daily life. Lower means less impact.
About 1.2 points lowerAverage drop on the study’s 0–10 loudness scale, compared with a rise of about 0.4 points with ordinary music.
Fewer reported problems with sleep.
Lower scores for anxiety symptoms.
Fewer reported symptoms of depression.
Early research on DFCRS, published in 2025. This study tested the method, not the HearHush app. Results vary. The score changes shown are approximate, read from the study’s chart.
Researchers at Fudan University randomly assigned 32 people to two groups: 18 received DFCRS music and 14 received the same music without personalisation. Both groups listened for at least two hours a day for three months, after brief instructions from an audiologist.
DFCRS stands for Digital Frequency Customized Relieving Sound. It enhances selected frequency bands just below and above the matched tinnitus pitch. The proposed mechanism is called lateral inhibition: stimulating neighbouring hearing nerve cells may reduce activity in an overactive region. This study did not directly measure that activity or show that nerve cells were repaired.
| Measure | DFCRS | Unmodified music | Reported p-value |
|---|---|---|---|
| Tinnitus impact THI | ≈ −22 | ≈ 0 | < 0.0001 |
| Insomnia AIS | ≈ −3.2 | ≈ +0.2 | < 0.0001 |
| Perceived loudness VAS | ≈ −1.2 | ≈ +0.4 | < 0.0001 |
| Anxiety symptoms HADS-A | ≈ −2.7 | ≈ −0.3 | < 0.01 |
| Depressive symptoms HADS-D | ≈ −2.5 | ≈ −0.3 | < 0.01 |
These are approximate readings of Figure 5; the paper does not list exact averages. THI measures tinnitus impact, AIS measures sleep problems, VAS measures perceived loudness, and HADS measures anxiety and depression symptoms. The p-values describe the statistical evidence for differences between the groups, not your chance of improvement.
Your personal sound therapy. Your 12-week plan.DFCRS music, practical coping lessons and progress reports. All included in Care for €99.
Explore CareA clearer next step
Tired of searching for another tip? Care brings two approaches together: DFCRS sound therapy aimed at reducing the ringing, and practical lessons for handling the worry and disruption it can cause. Follow a 12-week plan and track how you’re doing.
Explore 12-week CareLearn how worry and attention can make ringing feel harder to ignore, with clear lessons you can follow at your own pace.
First programme week included freeTry practical ways to handle difficult moments. Listen to your personalised DFCRS music, or create a background sound you enjoy in Sound Lab.
Track how you feel and what you’ve tried. Look back over time to spot changes that one difficult day might hide.
Take a look inside
Find your sound, make your music personal, and explore tools for the harder days.
Compare familiar sound textures, then fine-tune what feels closest. Your choices create the profile used to personalise audio in Care.
This helps tailor your music; it is not a hearing test. Use headphones for the sound matching.
Create your free account
Choose a track you enjoy. DFCRS adjusts it around your tinnitus pitch, with the aim of reducing the ringing through targeted sound. Your personal version is ready to use in your listening sessions.
You control the volume and playback. Start gently and follow your clinician’s advice.
See the Care plan
Choose a ready-made atmosphere, or describe one of your own. With Care, Sound Lab uses AI to create a soundscape from your words.
Steady ocean waves on a quiet beach, with soft wind and no sudden sounds.
A sound that suits you can help cover the ringing and bring relief while it plays. Listen at a comfortable volume.
Compare what’s included
Learn to recognise the thoughts that make tinnitus feel overwhelming, then practise a different response.
Work through guided lessons, readings and exercises designed by Hashir International Institute. Pause when you need to and return at your own pace.
Explore the programmeThe programme behind Care
Your coping lessons were developed by Dr Hashir Aazh, a tinnitus specialist, and licensed from Hashir International Institute.
They use cognitive behavioural therapy, or CBT: practical exercises to work on the worry, thoughts and habits that can make tinnitus harder to live with. Follow the lessons at your own pace, alongside your personal sound therapy.
Care is self-guided. Individual clinician appointments are not included, and results vary.
Meet the programme’s creatorNICE includes tinnitus-focused CBT in its recommendations for persistent tinnitus-related distress, with professional involvement. This supports the approach; it is not an endorsement or a clinical validation of HearHush.
Care brings together two distinct approaches: frequency-specific sound personalisation using DFCRS, and practical CBT skills for coping with tinnitus. The DFCRS study tested personalised music, not the combined HearHush programme.
Start with your first week free
Personalised sound therapy, practical coping skills and your own AI Sound Lab. Try the first week free. No card needed to start.
Get to know HearHush
€0no expiry
Start a routine and see whether the programme feels right for you.
Free access does not automatically become paid.
The complete programme
€99one payment
That’s €8.25 per week, paid once.
Personal sound therapy, practical coping skills and AI sound creation. Together in one plan.
Sign in or create an account, then choose Care in Membership. Care does not auto-renew.
Prices shown are for web access. Google Play displays its local price before payment.
Create an account and follow the setup. Try the first week of coping lessons, find your tinnitus sound match, explore the Sound Lab library and check in on how you feel. You only pay if you choose Care. Personalised DFCRS music is included in Care.
DFCRS aims to reduce how loud tinnitus feels by using personalised sound to stimulate nearby hearing nerve cells. That is the researchers’ proposed explanation for how it works. Care pairs this sound therapy with 12 weeks of practical lessons for the worry and disruption tinnitus can cause.
DFCRS aims to make the ringing quieter. The paper discusses the possibility of reducing or even eliminating the perception of tinnitus, but it does not report how many participants became tinnitus-free. It reports an average reduction in perceived loudness after three months. HearHush cannot promise silence or a cure.
Sound Lab helps you find a sound that covers the ringing while you listen. Choose from its library, or describe what you want and use Care’s AI to create a custom soundscape. This is sound masking: it can offer relief during playback, and the effect varies from person to person.
DFCRS personalises sound around your matched tinnitus pitch as part of a regular listening programme. The published DFCRS results are separate from Sound Lab’s AI sound creation.
How sound masking can helpThe study used regular listening sessions: at least two hours a day for three months. The aim is to reduce the ringing itself. The paper did not test how long improvements lasted after people stopped the routine, so it cannot tell us when listening can end.
No. Care is a self-guided programme. Individual appointments and ongoing clinical supervision are not included. Continue to follow the advice of your healthcare professional.
Lessons vary in length, and you can pause and pick up where you left off. Finding your tinnitus sound match usually takes about 5–10 minutes. The app’s sound therapy plan aims for two hours of listening a day, as in the study. Start gently and follow your clinician’s advice.
Care ends without automatically renewing. Free features remain available. If you want continued access to the full programme and paid tools, you can choose Maintenance for €59 per year. Maintenance renews annually until cancelled.
HearHush is for adults aged 18 and over and does not replace a medical assessment. New or changing tinnitus should be discussed with a clinician. See the medical guidance below for symptoms that need prompt attention.
When to seek medical care ↓You can start small
Start your first week of coping lessons free.
Explore a Care plan with sound therapy aimed at quieter tinnitus.
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