Local PCM WAV Joiner

How to use Local PCM WAV Joiner

Concatenate actual audio samples from two to 20 matching WAV files. The output retains each input sample byte in order and inserts an explicitly rounded frame gap between files.

1. Select two to 20 WAV files and verify their intended selection order.
2. Set the optional gap in milliseconds; zero joins samples directly.
3. Run, review each source placement in the report, then download the combined WAV.

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.
• All files must have the same sample rate and channel count. This tool does not resample, crossfade, convert MP3 or align recordings.
• The file selection order is used exactly; use the placement report to verify it before relying on the export.