Oct 17, 2026 · 12 min read
Wake Word Training Data: How Much You Need and What to Record
Plan wake word training data: positives, confusable negatives and a test set, what open datasets show about scale, and a collection spec to paste.
Buyer guides
Buy speech data with confidence
Long-form, vendor-neutral guides on evaluating datasets, negotiating licenses, and getting data for hard languages, so your procurement goes right the first time.
Oct 17, 2026 · 13 min read
Voice Command Data: How to Design the Utterance List
Plan voice command data collection: intents, phrasings, slot values, out-of-scope requests, speakers, devices, labels and a test set, with a spec to paste.
Oct 17, 2026 · 10 min read
Multilingual ASR Training Data: How to Plan Each Language
How to plan multilingual speech data for ASR: one model or several, hours per language, balancing, shared conventions, per-language tests and a budget.
Oct 17, 2026 · 11 min read
ASR Training Data: What It Contains and How to Check It
What ASR training data contains (audio, transcripts, timestamps, speaker metadata, rights) and how to check a vendor's sample before you buy.
Oct 13, 2026 · 9 min read
Voice Agent Evaluation: Metrics, Test Sets and Caller Audio
How to evaluate a voice agent layer by layer, from speech recognition and latency to turn-taking, task success and TTS, and which caller audio to test on.
Oct 13, 2026 · 9 min read
Best Sample Rate for Speech Data: 8, 16, 24 or 48 kHz?
Which sample rate, bit depth, channel layout and format to specify for ASR, TTS and voice agent data, from 8 kHz phone calls to 48 kHz studio audio.
Oct 13, 2026 · 11 min read
Speech Data RFP Template: What to Ask Vendors Before You Buy
A copy-paste speech data RFP template: what to ask vendors about spec, consent, license and price per hour, plus a scoring rubric and red flags to watch.
Oct 13, 2026 · 10 min read
Medical Speech Recognition: What Training Data It Needs
Why medical speech recognition misses drug names, doses and exam-room talk, what data each use case needs, and where to source it.
Oct 13, 2026 · 9 min read
Full-Duplex Speech Data for Voice Agents and Speech-to-Speech AI
What full-duplex and speech-to-speech models need from training data, what Moshi and dGSLM trained on, and a checklist for buying dual-channel audio.
Oct 13, 2026 · 10 min read
ASR Test Sets: How to Measure Real Speech Recognition Accuracy
Why ASR benchmarks overstate production accuracy, and how to build a held-out test set: what audio to include, how many speakers, splits and slicing.
Jul 10, 2026 · 7 min read
Speech Data for Low-Resource Languages: Why It's Scarce and How to Get It
Why speech data for low-resource languages is scarce, why open corpora fall short, and how commercial collection closes the gap for voice AI teams.
Jun 18, 2026 · 8 min read
How to Buy Speech Data: The Complete Buyer's Guide
How to buy speech data: scope requirements, audit vendors in 30 minutes, benchmark pricing, and negotiate the contract. A practical guide for ML teams.