Upload an audio file and add a repeating echo. Adjust delay time, feedback and mix, preview instantly, and download the result as a WAV.
Set delay, feedback and mix, then press Apply echo.
This tool builds a classic delay-and-feedback-loop echo. Your audio is sent into a Web Audio DelayNode, and a portion of that delayed signal is routed back into the same delay through a feedback gain, so it gets delayed again and again, each repeat a little quieter than the last.
A DelayNode holds your audio for a set number of seconds before letting it through, creating the gap before the first echo.
A gain node routes some of the delayed output back into the delay's input, producing a chain of progressively quieter repeats instead of just one echo.
Feedback is always kept below 100% so the loop reliably fades out rather than building up volume indefinitely.
Blends the original dry signal with the echoed wet signal, from a subtle slapback to a heavily repeating effect.
It feeds your audio into a delay line, then routes a portion of the delayed signal back into itself through a feedback gain, which is the standard delay-and-feedback-loop technique used to create repeating echoes.
Feedback controls how much of each echo is fed back into the delay line to create the next echo. Higher feedback means more repeats before the echo fades out. It is capped below 100% so the loop always decays instead of building up volume forever.
Delay time sets the gap between the original sound and its first echo, and between each repeat after that. Short delays sound like a slapback; longer delays sound like a canyon-style repeat.
It balances the original, unprocessed audio against the echoed signal, letting you add a subtle repeat or make the echo the dominant sound.
No. Decoding, echo rendering and WAV encoding all happen locally in your browser using the Web Audio API. Your file never leaves your device.
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