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Binaural Beats.

Generate a stereo binaural beat, adjust carrier and difference frequencies, blend pink noise and export a session. Preset names describe conventional bands, not guaranteed effects.

Before-and-after illustration of Binaural Beats: Carrier and beat gap becomes Binaural signal through Offset stereo tones.
Before → process → afterSee the signal story, then hear it in the workspace.

CALCULATED STEREO TONE PLAN

Binaural Frequency Split

Separate two audio channels, not claimed brain states. Left is the carrier; right adds the chosen difference. The workspace plots calculated tone samples and names their digital gain. This static artwork is illustrative, not a live signal, correlation meter or EEG measurement.

Before-and-after illustration of Binaural Beats: Carrier and beat gap becomes Binaural signal through Offset stereo tones.
Carrier and beat gapOffset stereo tonesBinaural signal
Illustrative stereo-tone artwork only. Use the workspace’s exact channel frequencies and fixed-scale tone plan; there is no detected brain activity, center-image analysis or therapeutic result.
Open the full signal breakdownBest source, processing logic, limits and three-pass listening check
  1. Carrier and beat gap

    Start with the right material

    Understanding a stereo-tone presentation and creating a finite, reusable sound experiment without uploading a recording.

  2. Offset stereo tones

    Understand the transformation

    Left is the carrier and right is carrier plus difference. One shared Web Audio graph generates both preview and export, with native source-stop deadlines and down-only pink-noise headroom.

  3. Binaural signal

    Verify the usable result

    A calculated tone-only channel plan, controlled audio-play-time timer and 10-second to 10-minute stereo WAV/MP3 or local handoff, retaining the current Volume including exact silence at zero.

Interaural difference

Where this workflow stops

Not EEG, a hearing calibration or a validated focus/sleep treatment. Mono playback changes channel separation; perceived beating varies. Audio suspension pauses the timer; MP3 is lossy and not guaranteed gapless. Large exports may need a shorter duration.

THREE-PASS CHECK

Make the final decision by ear

  • Check left, right and difference frequencies before Play; use stereo headphones at a low device volume.
  • Use Stop all audio or Escape; distinguish the audio-play-time deadline from a wall-clock alarm.
  • Check the current Volume and File duration before exporting; preserve stereo, and do not assume MP3 is gapless.

How to use the binaural beats generator

  1. Use stereo headphones and a low device volume. Check that your player or accessibility settings are not combining the channels into mono.
  2. Set the left carrier (50–500 Hz) and the right-minus-left difference (0.5–40 Hz). Read both exact frequencies; conventional presets are not prescriptions for mental states.
  3. Choose Volume and optional Background pink noise. The fixed-scale picture is a calculated tone-only plan, not recorded audio or brain activity; 0% is exact silence.
  4. Choose Playback timer before Play stereo tones. Tone/level edits keep its deadline; a timer edit restarts it. Use Stop all audio or Escape to retire this graph.
  5. Choose a separate File duration and Download WAV, Download MP3 or Continue editing. Current levels are retained without peak boosts; settings changes discard any obsolete pending file.

The two tones are generated locally: right frequency equals left carrier plus the chosen difference. A perceived binaural pulse is not a third low-frequency sine in either isolated channel. Perception varies, especially at larger differences; no preset guarantees sleep, focus or a brain state. Preview uses an audio-clock timer, while export creates a new finite stereo session. Read the worked stereo, level and session-file examples.

Binaural Beats: quick answer and technical limits

Quick answer: A local stereo sine-tone generator with explicit left/right frequencies, optional common pink noise, owned playback and current-volume files.

Best for
Understanding a stereo-tone presentation and creating a finite, reusable sound experiment without uploading a recording.
How it works
Left is the carrier and right is carrier plus difference. One shared Web Audio graph generates both preview and export, with native source-stop deadlines and down-only pink-noise headroom.
What you get
A calculated tone-only channel plan, controlled audio-play-time timer and 10-second to 10-minute stereo WAV/MP3 or local handoff, retaining the current Volume including exact silence at zero.

Know before you use it: Not EEG, a hearing calibration or a validated focus/sleep treatment. Mono playback changes channel separation; perceived beating varies. Audio suspension pauses the timer; MP3 is lossy and not guaranteed gapless. Large exports may need a shorter duration.

Privacy: Tones and the repeating two-second pink palette are generated and encoded locally without a microphone or audio upload. Optional workspace storage stays on this device; normal page assets still load as described in the privacy notice. Privacy details →

FAQ

Do binaural beats really need headphones?
Stereo headphones provide controlled one-tone-per-ear presentation. Speakers or a mono setting mix both tones; acoustic or monaural beating may remain, but it is not the same separated binaural setup. Ordinary stereo headphones or earbuds are sufficient, and perceived beating varies by listener and frequencies.
Can I download a binaural beats session to play offline?
Choose 10 or 30 seconds, or 1, 5 or 10 minutes, then download stereo WAV or MP3 with the current frequencies, pink noise and Volume. Zero Volume produces silence; quiet files are not peak boosted. Each file starts fresh with 0.5-second edge fades, independently of the playback timer. WAV is 44.1 kHz 16-bit PCM; MP3 is 320 kbps, lossy and not guaranteed gapless. Memory limits may require a shorter file.
What does the playback timer count?
The timer counts audio-play time on the native audio clock. Source stop and fade are scheduled in that graph, rather than depending on a page timeout. Browser or device audio suspension pauses the clock. Changing the timer during playback restarts the session and timer; tone, Volume and pink-noise edits retain its deadline. File duration is independent. This is not a wall-clock alarm.
Which binaural beat preset should I choose?
The Delta, Theta, Alpha, Beta and Gamma names are conventional preset labels, not promises of sleep, focus or a particular brain state. Research on practical outcomes is mixed. Choose by listening comfort and keep expectations modest.
Are binaural beats a medical or proven focus tool?
No. This is a sound generator, not a medical treatment or clinically validated focus or sleep tool. Keep the volume comfortable, stop if you feel discomfort, and do not use distracting audio while driving or operating machinery. Ask a qualified clinician about personal health concerns.