Two-Track PCM WAV Mixer

How to use Two-Track PCM WAV Mixer

Place two PCM recordings on one sample timeline and sum matching channels. Negative offsets begin the second file before the first. Over-range samples either stop the export or apply one documented global scale.

1. Choose two WAV files with matching sample rates and channel counts.
2. Set the second-file offset, each digital gain and overload handling.
3. Run, review placement and global scale, then download the mixed 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.
• The tool sums corresponding channels without resampling, alignment detection, pan controls, denoising or automatic crossfades.
• Global scaling uses one factor for the whole result; it is peak protection rather than dynamic compression or a loudness target.