Format path
Six common browser formats have completed live normalization and API checks with HTTP 200.
AI voice and speech signal
MP3, M4A, AAC, OGG, FLAC and WAV are normalized locally to 16 kHz mono PCM. Speech can receive a weak authenticity signal; music, mixed and other audio return unknown.
Open the free checkerEvery result is a warning signal. The evidence and limitations below define what this route can and cannot support.
Six common browser formats have completed live normalization and API checks with HTTP 200.
The frozen 193-clip source-disjoint speech holdout reached 84.46% balanced accuracy and 15.53% real false positives.
YAMNet separates speech, music, mixed and other content. It is not itself an authenticity detector.