Aligned starts
A, B, and X each begin from sample zero at the same AudioContext start time. The files themselves are not automatically time-aligned beyond their starts.
Controlled listening
Local-file ABX test.
Blindly compare two files under the same browser playback path and see an exact chance result for your trial answers.
Blind comparison
Can you identify the difference?
Choose two audio files. WaveLocus decodes them only in this browser, starts both sources at the same sample-zero moment for each preview, and makes only A, B, or randomized X audible. It never uploads the files.
RMS matching measures average digital sample energy and only attenuates the louder file. It is not LUFS, perceptual loudness matching, or a claim that the files are otherwise equivalent.
StatusChoose two local audio files. They are decoded in this browser and are never uploaded.
Method limits
A listening test, not a quality score.
RMS matching
Optional RMS matching only attenuates the louder decoded file. It does not equalize perceived loudness or spectral balance.
Chance result
The one-sided binomial p-value measures this run against random guessing. It does not establish a product-quality verdict.