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HALOWERK audiowerk Voice Evidence Analyzer
x402
HALOWERK audiowerk Voice Evidence Analyzer is a paid API for AI agents from audio.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-14).
Analyzes an audio recording to extract acoustic evidence metadata including room tone, pause detection, and silence characterization.
Price / call$0.006
Success—
StatusUnknown
How this service works
Returns measured evidence about a recording, not a verdict on it. The spectral cut-off says which lossy stages the file has already been through, since every encoder discards everything above its own ceiling. The room tone measurement compares the noise floor across the silent stretches: a microphone in a room produces a floor that differs between pauses, and a level identical to the hundredth of a decibel across every pause means the silence was inserted rather than recorded.
Output
Returns acoustic evidence data for the submitted audio file, including measured room tone level, detected silent/pause stretches (with timing and duration), and related metadata based on the configured silence threshold.
Example use cases
Forensic interview audio review
“I need to analyze this witness interview recording for acoustic evidence — here's the public URL: https://myfiles.example.com/interview_2024.wav. Set the silence threshold to -45 dB and tell me about the room tone and any significant pauses.”
Podcast silence audit
“Can you check my podcast recording at https://cdn.example.com/episode12.mp3 for long silent stretches? Use a silence threshold of -35 dB so we catch obvious dead air.”
Legal deposition audio examination
“Analyze this deposition audio file for evidence of room tone and pauses — the file is at https://legal.example.com/deposition_july.mp3, and use a -50 dB silence threshold to catch only the truly silent gaps.”
Technical details
Endpoint
POSThttps://audio.halowerk.com/voice-evidenceWhen to prefer
Choose this endpoint when you need to extract acoustic evidence from an audio recording — specifically room tone measurements and silence/pause detection — rather than transcription, format conversion, or loudness normalization. Ideal for forensic, legal, or quality-assurance workflows where objective acoustic metadata matters.
Side effects
- Private or local audio URLs are rejected (only public http/https URLs accepted)
- Providing both url and content_base64 simultaneously causes a validation error
- base64 payload exceeding 12 MB limit is rejected
- Malformed or unsupported audio file format may cause processing failure
- Silence threshold outside the -70 to -20 dB range is rejected
- Payment failure via x402 prevents endpoint access
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| audio | object | The recording. Either url or content_base64, not both. |
| silence_threshold_db | integer | Level below which a stretch counts as a pause, for the room tone measurement. |
Tags
x402
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