Vinnie Garcia

Echo tuner

One sound, a little space. Play a note, then shape what comes back.

Listen

Sound off

Start with your device volume low. Test sound plays one short note.

Ready. Nothing is listening or playing.

0
Use your microphone

Headphones required. Speakers can create a loud feedback squeal. Keep volume low and press Stop if it builds. Wireless headphones add extra delay.

Permission is requested only when you press this button. Audio stays on this device; nothing is recorded or uploaded.

Shape the echo

Time between repeats.
Tap twice to set the delay.
How much of each repeat returns.
Original sound on the left, echoes on the right.
Lower values make the repeats darker.
Start low. This does not replace your device volume.

Switching away stops the audio. Return and press Test sound or Use microphone to start again.

How it worksBack to the demo

By Vinnie Garcia ยท All experiments

Give a sound somewhere to come back from

Tap Test sound to send a short synthesized pluck through the echo. Change the delay, then tap again: a short gap thickens the sound; a longer one separates it into repeats. You don't need microphone access to try it.

Find the timing

Delay is the gap between repeats, from 40 to 1,500 milliseconds. Tap tempo sets that gap from your taps. The BPM reading treats one repeat as one beat; it isn't listening for the tempo of a song.

Feedback sends some of each echo back into the delay. Higher values make the tail last longer. Mix balances the original sound against the echoes. At zero, you hear only the original; at 100 percent, only the delayed sound.

Tone takes high frequencies out of the feedback path. The first echo stays clear, then later repeats get darker. Output controls the overall level. Start low, especially with headphones. The presets are starting points, not different effects.

Try your voice

Connect headphones before enabling the microphone. Speaker output can get picked up by the mic and build into a loud feedback loop, even with the repeats turned down. A low output setting is not protection against that loop. Wired headphones avoid the extra delay wireless headphones can add.

A browser permission prompt appears only when you choose the microphone. If you denied it, allow microphone access in the browser's site settings and try again. Stop cuts the sound, clears the echo tail, and releases the microphone. Leaving the page or hiding it also stops the session; tap a sound or start the mic again when you return.

What runs here

Web Audio splits the input into an original path and a delayed path. A low-pass filter and a gain node feed the delayed sound back around the loop. The repeat gain stays below one, and the wet level is reduced as repeats increase to keep the loop's combined level in check. Neither is an acoustic-feedback limiter.

Sound is processed in your browser. This tool does not record or upload it. Open the live HTTPS page in a current browser; on iPhone or iPad, start audio with a tap. Browser interruptions, device routing, and wireless headphones can add latency or stop a session. This is an echo effect, not a pitch tuner or a measurement of the room's acoustics. It is not an offline app.

For sound that changes a picture rather than coming back as an echo, try the ambient audio visualizer or live visuals.