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HALOWERK audiowerk Speech Rate Analyzer
x402
HALOWERK audiowerk Speech Rate Analyzer is a paid API for AI agents from audio.halowerk.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).
Measures the speaking rate and pause patterns of an audio recording, with optional transcript and segment timings
Price / call$0.008
Success—
StatusUnknown
How this service works
HALOWERK audiowerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
Output
Returns the measured speech rate (e.g. words per minute), detected pause/silence segments with timings, and optionally the full transcript text alongside per-segment timing data.
Example use cases
Podcast pacing quality check
“I just recorded a podcast episode — here's the URL: https://cdn.mypodcast.com/ep42.mp3. Can you measure my speech rate and show me where I paused too long? Use English and return the transcript too.”
Presentation coach feedback
“I have a recorded presentation at https://storage.example.com/talk.wav, spoken in English. Can you tell me how fast I'm speaking and flag the silent stretches — set the silence threshold to -40 dB so only noticeable pauses count?”
Automated audiobook QA pipeline
“Run a speech rate analysis on this base64-encoded narration file — the language is English — and give me the segment timings so I can check whether the narrator is staying within the target pace range.”
Technical details
Endpoint
POSThttps://audio.halowerk.com/speech-rateWhen to prefer
Choose this endpoint when you need objective, quantitative speech-rate metrics and pause analysis from an audio file — especially for coaching, QA pipelines, podcast production, or accessibility tooling. It is distinct from general transcription services in that it returns silence/pause detection and pacing data, not just text. Use it when the speaking cadence itself is the signal you care about.
Side effects
- Audio URL is not publicly accessible or returns a non-200 response
- Audio file exceeds base64 size limit (12 MB encoded)
- Both url and content_base64 provided simultaneously — only one is accepted
- Unsupported audio format or corrupted file
- Language detection fails if audio quality is too low
- silence_threshold_db out of allowed range (-70 to -20)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| audio | object | The recording. Either url or content_base64, not both. |
| language | string | ISO 639-1 code of the spoken language. Left out, it is detected. |
| include_transcript | boolean | Return the transcript text alongside the measurement. Segment timings always come back. |
| silence_threshold_db | integer | Level below which a stretch counts as a pause. |
Tags
x402
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