01 · Evidence
One positive study is not a universal answer.
A 2024 randomized controlled trial reported changes in sleep quality and other measures among older people with poor sleep quality in a long-term-care institution who listened to a particular binaural-beat music protocol. That result is relevant, but the population, setting and audio protocol limit how broadly it should be applied.
Studies vary in beat rate, carrier, music, duration, timing, comparison audio and outcome measurement. A 2023 systematic review of EEG entrainment research found inconsistent results across included studies. This is why Hamen says “designed for a bedtime routine,” not “proven to induce deep sleep.”
Noise is another common bedtime tool. Systematic reviews of white, pink and broadband noise report mixed or low-quality evidence. Some people value masking of environmental sound even when a clinical sleep improvement is not established.
02 · Delta and theta
Slow labels describe the rhythm, not your sleep stage.
Delta-labeled Hamen sessions use slow beat or pulse rates, typically in the conventional 0.5–4 Hz category. Theta-labeled sessions use roughly 4–8 Hz. These categories can make a session feel slower or less busy.
They do not mean Hamen measures your EEG or confirms deep sleep, REM, dream activity or a whole-brain state. The rate is an audio parameter. Learn how difference rates and carriers work in the frequency guide.
There is no single rate proven best for every listener. Comfort, volume, sound texture, timing and the consistency of your broader routine may matter more than one number.
03 · Practical ritual
A simple 20-minute Hamen wind-down.
- Reduce stimulation first. Dim the room and finish urgent screen activity before starting audio.
- Choose a low-stimulation session. Start with a slow beat, brown/pink noise or an ambient bed whose tone feels comfortable.
- Pick the output for your body. Use binaural with stereo headphones, or choose a speaker-friendly mode if wearing headphones in bed is uncomfortable.
- Keep volume low. The sound should sit beneath attention, not demand it.
- Set a timer and fade. A clear endpoint avoids unnecessary all-night playback.
- Repeat the cue. Use the same short sequence for several evenings before deciding whether the ritual feels helpful.
Hamen’s five-day plan can provide structure, but plan progress reflects listening time—not sleep quality or a measured biological response.
04 · Comfort and output
Binaural needs headphones. Bedtime does not.
| Mode | Headphones needed? | Bedtime consideration |
|---|---|---|
| Binaural | Yes, stereo | Accurate left-right separation, but physical comfort may be poor in bed |
| Isochronic / pulse | No | Rhythm exists in the signal and can use a bedside speaker |
| Steady pure tone | No | Minimal sound, but some listeners find a bare tone too prominent |
| Color noise | No | May help mask environmental variation; evidence for sleep outcomes is mixed |
| Ambient bed | No | Often softer and less clinical-feeling than a bare tone |
Do not force binaural mode just because its name sounds more advanced. The more comfortable speaker-friendly option may be the better bedtime tool.
05 · Listen gently
Lower volume is the default.
- Keep the volume comfortable and give your ears quiet breaks.
- Never listen while driving or operating machinery.
- Stop for discomfort, dizziness, agitation or hearing fatigue.
- Use a timer instead of assuming longer exposure is better.
- Ask a qualified professional if a health condition makes rhythmic sound a concern.
If you regularly cannot sleep, wake gasping, experience severe daytime sleepiness or have persistent anxiety around sleep, an audio app is not a substitute for evaluation.
06 · FAQ
Sleep listening questions.
Do binaural beats help you sleep?
They may feel useful to some listeners, and specific studies report positive findings. The wider evidence is mixed, so no app should guarantee sleep or present binaural audio as an insomnia treatment.
What frequency should I start with?
Choose by comfort. Slow delta- or theta-labeled sessions are common bedtime choices, but there is no universally proven best rate.
Can I play Hamen through a speaker?
Yes for pulse, isochronic, steady tone, noise and ambience. Binaural mode needs stereo headphones for separate left and right carriers.
Should I leave it on all night?
A timer and fade are usually the more conservative choice. Continuous playback is not automatically more helpful and headphones may become uncomfortable.
Does Hamen track my sleep?
No. Hamen tracks recent listening and plan progress on the device; it does not measure sleep stages or medical outcomes.
Sources
Sleep evidence cited.
- Lin et al. (2024): binaural-beat music sleep RCT in a long-term-care institution
- Riedy et al. (2021): noise as a sleep aid systematic review
- Capezuti et al. (2022): auditory stimulation and sleep systematic review
- World Health Organization: safe listening
These studies tested their own sounds, participants and protocols. They did not test Hamen and should not be read as product validation.