We proudly offer

Olewave Over-The-Shelf Speech Datasets

High-Quality,
U.S.-based Transparency,
Unmatched-Scale & Cost-Effective.
  • Tier I — Untranscribed: language & topic tags (plus optional SNR, speech ratio, summaries).

  • Tier II — Pseudo-Transcribed: Tier I labels + machine transcripts with word- and utterance-level timestamps and confidence scores.

  • Tier III — HITL-Transcribed: Tier I labels + human-made transcripts validated to Tier II standards.

  • Tier IV — Advanced-Labeled: most comprehensive — Tier III + speaker turns, diarization, topics and custom annotations.

  • Enterprise-ready & cost-effective: ironclad SLAs · AB 2013 compliant · end-to-end audit trails · up to 10× cheaper than traditional datasets

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Speech Data Processing & Cleaning Service API

Turn your raw audio
into production-ready data for training and evaluation,
using our OTS-grade pipeline.
  • Clean: remove noise, silence, duplicates, and irrelevant segments

  • Annotate: custom models generate accurate first-pass labels, then human reviewers verify and refine for production-grade quality

  • Validate: our proprietary validation catches annotation errors

  • Curate: we can even collect from your appointed sources

  • Safety: minimize data-breach risk by limiting human involvement

  • Deliver: your data, your format, on your infrastructure

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Open-Sourced Conversational Voice Dataset

OleSpeech-IV-2025-EN-AR-100
English conversational audio,
validated transcripts and speaker turns,
free for research.
  • Source: podcasts, talk shows, teleconferences, natural conversations

  • Transcript validation: word-level confidence scores, no hallucinations

  • Transcript correction: proprietary methods for named entities — names, orgs, locations, times

  • Fine-grained timing: word- and phone-level timestamps with speaker turns

  • 360° annotation: speaker names, turns, SNR, topics, descriptions

  • Label customization: pick from pre-labels or request new ones

  • Lifetime curation: continuous label refinement at no extra cost

  • Produced by Olign: our proprietary speech-to-text alignment engine

  • Full dataset available for purchase: contact us for commercial licensing

View on Hugging Face

‡ US-based companies and institutes only. NDA signing required.