Interactive Audio Tools
Free tools to help you find the right frequencies, test your setup, and optimize your listening sessions.
Our interactive tools let you try the sounds our guides write about.
The Frequency Finder shows which frequency ranges and sound types people commonly use for a goal. The binaural generator builds real-time beats at the brainwave frequency you pick. The session timer counts down for you. The sound matcher asks one question and points you at a channel. The headphone check confirms your left and right sides are playing separately.
Every tool is free, needs no account, and works in any modern browser.
Find frequency ranges and sound types to try for your goal. Pick one of five goals, such as sleep or focus, and the finder shows which bands and sounds are commonly used for it. It is a starting point rather than a prescription, and our guides cover what the research does and does not support.
Frequency Finder
Select your goal to discover the best frequencies and sound types.
Generate custom binaural beats in real time. Set your base frequency and target brainwave state (Delta, Theta, Alpha, Beta) and listen through stereo headphones.
Binaural Beat Generator
Use stereo headphones for the full binaural effect
Time your sound-therapy sessions with a clear countdown. Pick a preset duration, watch the progress bar, and see an on-screen notice when the session ends.
Session Timer
Set a timer for your listening or meditation session.
Answer one question about what you want to do right now, and get pointed to the channel to start with: sleep, coloured noise, meditation, or healing frequencies.
Sound Type Matcher
Answer one question to find which channel to start with.
1. What are you trying to do right now?
A quick channel check: play a tone in your left ear, your right ear, then both, to confirm your headphones route stereo correctly before a binaural beats session.
Headphone Check
Check that your left and right channels play on the correct side, which binaural beats need.
You should hear a tone in your LEFT ear only.
You should hear a tone in your RIGHT ear only.
You should hear a tone in BOTH ears equally.
Frequently Asked Questions
What are binaural beats?
A binaural beat is an auditory illusion. When each ear hears a slightly different frequency through stereo headphones, your brain perceives a third tone equal to the difference between them. Play 200 Hz in one ear and 210 Hz in the other and you hear a 10 Hz beat, which sits in the alpha band linked to relaxed focus.
How do I find my ideal frequency?
Pick your goal in the Frequency Finder above and it suggests bands to try. As a rough guide, these are the bands people commonly use: delta (0.5-4 Hz) for deep sleep, theta (4-8 Hz) for meditation, alpha (8-13 Hz) for relaxed focus, and beta (13-30 Hz) for alertness. How much research supports each pairing varies a great deal, and our guides go through it.
Do I need headphones for these tools?
Only the Binaural Beat Generator truly needs stereo headphones, since the effect depends on each ear getting a different frequency. The other tools work on any speakers, though headphones help. Not sure your stereo is working? Run the Headphone Check first.