Audio Event Detection

Audio Event Detection scores an audio file against a fixed set of non-speech sound events: instruments, human vocalizations such as laughter and coughing, and environmental noises such as a knock or a gunshot. It returns a probability for every supported event on every call, plus the duration of the processed audio. It is a pure classification endpoint, producing no transcript, diarization, or PII/PHI tagging.

	Batch
Use case	Score an audio file against a fixed set of non-speech sound events
Protocol	HTTP POST
Max file size	100 MB
Output	A probability per event, plus `duration_ms`
Options	None. Only `upload_file` is accepted

probs carries 42 keys on every response. cry is an independent probability. The other 41 are drawn from a single shared distribution that sums to 1 across those keys, so they rank the most prominent event rather than reporting independent detections. See Audio Event Detection for how to read the two kinds of value. For a side-by-side comparison with the other Modulate capabilities, see Which API should I use?.

Authentication

Uses the X-API-Key header. See Authentication and rate limits.

Velma

Speech-to-text Transcription

Deepfake Detection

Emotion Detection

Accent Detection

PII/PHI Redaction

Music Detection

AI Music Detection

Language Detection