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diff --git a/doc/HOWTO.md b/doc/HOWTO.md index 768e51d..cc43e7c 100644 --- a/doc/HOWTO.md +++ b/doc/HOWTO.md @@ -257,6 +257,17 @@ cmake --build build -j4 --target spectool Requires `ffmpeg` for `.aif` input files. Output uses v2 format (OLA, Hann, hop=256). +### Decoding .spec to WAV + +To verify or inspect a `.spec` file as audio: + +```bash +./build/spectool --wav input.spec output.wav +``` + +Produces a mono 16-bit PCM WAV at 32 kHz using IDCT-OLA synthesis (no synthesis window — +the analysis Hann window is its own reconstruction filter at 50% overlap). + --- ## Assets |