antissa

Wave Compare

Per-sample comparison between a float reference and one or two fixed-point ports of the same signal.

Select files and compare

Pick a float reference and one or two fixed-point .wav candidates — Wave Compare loads them onto a shared time axis and runs wav-diff straight away.

Navigate MLD, MAD, and SSNR

Step through the per-channel MLD (maximum loudness difference, BS.1387 perceptual), MAD (maximum absolute sample difference), and min SSNR (worst 20 ms segmental SNR) figures, jumping the plot to each worst-mismatch sample.

Audio playback

Play the reference and the candidates from any point on the shared timeline to hear where the fixed-point port drifts.

What it does

Load a float reference and one or two fixed-point candidates. Wave Compare overlays them in a shared time-axis plot and runs wav-diff per channel and reports three metrics: MLD (maximum loudness difference — the BS.1387 / 3GPP TR 26.843 perceptual ear-model peak), MAD (maximum absolute sample difference), and min SSNR (the worst 20 ms segmental SNR). Each metric drops a coloured marker on the plot so you can jump straight to the offending sample.

Typical workflow

  1. Drop a float .wav as the reference.
  2. Drop one or two fixed-point .wav files as candidates.
  3. Read the per-channel MLD / MAD / SSNR report.
  4. Click a marker to seek to the worst-mismatch sample in all overlays simultaneously.

Open Wave Compare from the activity rail's mode switcher to start.