SpeechDataAI/brazilian-portuguese-conversational-speech

Brazilian Portuguese Conversational Speech Dataset

2,000 hours of spontaneous two-person conversations in Brazilian Portuguese, recorded in Brazil with 200 vetted native speakers. Dual-channel audio, time-aligned human-verified transcripts and speaker metadata, licensed for commercial ASR, TTS and voice AI training.

This repository is the dataset card only. The audio is licensed commercially and isn't hosted on Hugging Face. Free samples (audio, matching transcripts and the metadata schema) are sent on request: request Brazilian Portuguese samples. To evaluate a purchase, request a written quote so the team can confirm available recordings, permitted use and total price for your brief.

Specifications

Language	Brazilian Portuguese
Recorded in	Brazil
Speech type	Spontaneous two-person conversations
Volume	2,000 hours
Speakers	200 vetted native speakers
Audio	Dual-channel, one channel per speaker
Transcripts	Time-aligned, human-verified
Speaker metadata	Age, gender, region, recording device
Consent	Signed commercial-use consent from every speaker
License	Commercial, for training and evaluation
Price	$65 per hour of audio, volume and multi-language discounts on request

What makes Brazilian Portuguese hard for speech recognition

Brazilian Portuguese keeps its vowels open and full, and in much of the country "t" and "d" before an "i" sound come out as "ch" and "j". Everyday speech uses "você" and "a gente", and accents from São Paulo, Rio and the Northeast differ noticeably, so speaker coverage matters.

Built for

• Automatic speech recognition (ASR / STT)
• Text-to-speech and voice synthesis prosody
• Voice agents and IVR for Brazil
• Speaker diarization and turn-taking models
• Speech LLM and audio-understanding fine-tuning

Getting the data

Request samples with a company email on the Portuguese (Brazilian) dataset page and the team replies with representative audio and transcripts so you can check quality, accents and transcript conventions before you buy. Need more hours, another dialect or your own recording setup? SpeechData.ai also collects speech data to spec, or you can book a call.

Need something else?

• Call center speech data for call-center style recordings.
• Audio annotation services to transcribe or annotate audio you already have.
• Speech data pricing with published per-hour prices.

Related datasets

Other Portuguese datasets from SpeechDataAI on Hugging Face: European Portuguese, Angolan Portuguese.

About SpeechData.ai

SpeechData.ai licenses conversational speech datasets in 60 languages and dialects and runs custom speech data collection. It's part of Spirelight. Browse the full catalog.