Advanced & 3D Labeling

Audio Annotation Services

Verbatim transcription, speaker diarization, and acoustic event labeling for speech and audio AI.

Overview

Real-world audio is rarely clean — accents shift, speakers talk over each other, background noise interferes, and conversations switch between languages mid-sentence. Our audio annotation teams handle all of it, delivering time-aligned verbatim transcripts, speaker diarization, and acoustic event tagging, with word-error-rate sampling built into QA across a wide range of languages, dialects, and recording conditions.

What's included

  • ✓Verbatim and clean-read transcription with precise timestamps
  • ✓Speaker diarization and speaker identification
  • ✓Acoustic event detection and sound classification
  • ✓Phonetic transcription and prosody annotation
  • ✓Coverage across multiple languages and accents
  • ✓QA sampling based on word-error-rate, with per-batch reporting

Use cases

Speech Recognition Model Training

Richly transcribed speech datasets covering varied accents and speaking styles to train and benchmark ASR systems.

Contact Center Quality Monitoring

Diarized and labeled call audio to power agent coaching, compliance review, and customer sentiment models.

Voice Assistant & Wake-Word Development

Command and trigger-phrase datasets captured across accents, environments, and background noise levels.

Podcast & Media Content Indexing

Searchable transcripts and speaker-tagged segments to enable content discovery, highlight generation, and archival search.

Frequently asked questions

How do you guarantee quality foraudio annotation services?

Every project runs through multi-tier QA: annotators are benchmarked against gold-standard tasks before production, batches are statistically sampled against agreed accuracy targets, and ambiguous cases are escalated and documented in a living labeling guide. You receive accuracy reports with every delivery.

Can we start with a small pilot before committing?

Yes — we recommend it. A paid pilot batch on your real data lets you evaluate our quality, turnaround, and communication before scaling. Pilot learnings become the project's labeling guide.

How is our data kept secure?

Client data is encrypted in transit and at rest, access is limited to the assigned project team under NDAs, and we support VPN-restricted or client-hosted workflows where data cannot leave your environment. Retention and certified deletion terms are set per engagement.

What tools and output formats do you support?

We work in your annotation platform or ours, and deliver in the format your pipeline expects — COCO, YOLO, Pascal VOC, JSON, CSV, or a custom schema — with delivery via API, cloud bucket, or scheduled export.

Ready to scale youraudio annotation services?

Start with a pilot batch — see our quality on your data before you commit.

Talk to an Expert →