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Audio & Speech services · 10 / 10

Audio & Speech

Verbatim transcription, speaker diarisation and sound-event labels.

We transcribe and segment speech to your style guide, verbatim or clean, with speaker turns, overlaps, non-speech events and timestamps aligned to the waveform.

Typical use cases

  • ASR training data
  • Call-centre analytics
  • Voice assistants
  • Sound-event detection

Sample deliverable

What the output looks like.

CALL 7731 · EN-IN · 8 kHzWER 3.1% · DER 4.4%
  1. 00:00.0SPK AThanks for calling. Can I start with your policy number?
  2. 00:04.3SPK BSure, it's, uh, N-W four four one two.
  3. 00:07.6A+B[overlap] Perfect… / Sorry, four one two.
  4. 00:08.2EVENT[keyboard typing]
  5. 00:10.4SPK AGot it. I'm pulling that up now.

Synthetic demonstration scene. No client data.

Variants

A

Transcription

Verbatim or clean-read, with timestamps at utterance or word level.

B

Diarisation

Speaker turns, overlaps and speaker attributes.

C

Sound events

Onset / offset tags for non-speech audio.

QA metric

Word error rate vs gold

≤ 5%

Diarisation error rate reported separately.

Export formats

  • JSON
  • SRT / VTT
  • TextGrid
  • RTTM
  • CSV

How every project runs

  1. Scope call & sample review
  2. Written guideline & gold set
  3. Fixed-fee pilot with QA report
  4. Production in weekly batches
Read the full process →

Next step

Scope your project with
an annotation lead.

A 30-minute call with the person who would run your project. We review a sample of your data, recommend an approach and send a fixed-price proposal within two business days.