PCM WAV Delay and Echo Generator

How to use PCM WAV Delay and Echo Generator

Create a finite delay effect from the original signal. The first echo uses the wet gain; later echoes multiply that gain by successive powers of feedback. An explicit tail is retained for the requested echo count.

1. Select a supported WAV and choose delay plus echo count.
2. Choose dry gain, first-echo gain and feedback; negative feedback alternates later echo polarity.
3. Run and inspect the actual echo gains and global scale before downloading.

Good to know

• Local ordinary little-endian RIFF/WAVE, signed 16-bit mono or stereo PCM only; compressed, float and extensible WAV are rejected.
• Each input is at most 10 MiB, 120 seconds and 2,880,000 frames. Output is bounded by the same frame/duration limits and 20 MiB; high sample rates reduce available duration.
• Processing uses a local Worker with a 2-second compute deadline. No upload, autoplay, microphone or saved history. Unrelated metadata is omitted from exports.
• This finite feed-forward echo is not an infinite feedback loop, room simulation or reverb model.
• At most 12 echoes and 30 million sample visits across the two output passes; long or high-rate files may need fewer echoes. The tail is included even when a chosen gain is zero.