Detection Model
Drop an audio file here
MP3, WAV, M4A, OGG, FLAC · Max 50 MB
Demo. This page shows the tool's interface and how it scores what it finds. Live analysis is not running for you yet.
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How detection works
Silence ratio, pause rhythm, and pitch standard deviation are measured across 20–100ms frames. TTS systems produce unnaturally dense speech with flat intonation contours.
ZCR variance, spectral flux, energy dynamics, MFCC trajectory smoothness, cepstral peak prominence (CPP), HNR, micro-timing jitter, and centroid drift. Neural vocoders leave characteristic signatures.
Up to 24 indicators are weighted by signal strength. 7 prosodic checks are marked accent-sensitive — their thresholds are relaxed for non-native English speakers. If only prosodic flags fire while physiological checks (jitter, shimmer, HNR) are clean, the score is automatically reduced.