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Home > All Category Datasets > Speech Recognition Datasets > 127 Hours Brazilian Portuguese Speech Dataset with Spontaneous Dialogues for ASR

127 Hours Brazilian Portuguese Speech Dataset with Spontaneous Dialogues for ASR

portuguese speech dataset
brazilian portuguese asr dataset
portuguese speech corpus
brazilian portuguese speech dataset

This dataset contains 127 hours of Brazilian Portuguese conversational speech recorded through topic-guided dialogues spanning more than 20 domains. Each recording includes an accurate transcript, speaker ID, age, gender, and additional metadata. The dataset was collected from 142 native Brazilian Portuguese speakers across diverse regions, enhancing model performance in real and complex tasks. The dataset has undergone quality validation by multiple AI companies. We strictly adhere to data protection regulations and privacy standards, ensuring the maintenance of user privacy and legal rights throughout the data collection, storage, and usage processes, our datasets are all GDPR, CCPA, PIPL complied.

Paid Datasets
This is a paid dataset licensed for commercial use. Ready-made datasets are available for immediate integration into AI projects.
SpecificationsSpecifications
Format
16kHz, 16 bit, wav, mono channel;
Content category
Dialogue based on given topics;
Recording condition
Low background noise (indoor);
Recording device
Android smartphone, iPhone;
Speaker
142 native speakers in total, 50% male and 50% female;
Country
Brazil(BRA);
Language(Region) Code
pt-BR;
Language
Portuguese;
Features of annotation
Transcription text, timestamp, speaker ID, gender, noise, PII redacted.
Accuracy Rate
Word Accuracy Rate (WAR) 98%
Sample Sample
  • Audio

    Ai eu também, eu gosto.

  • Audio

    E agora a minha primeira em primeiro lugar, está sushi.

  • Audio

    Eu coloco como comida preferida, o que eu comeria todos os dias.

  • Audio

    O que eu comeria todo, eu comeria sushi todos os dias, mas eu comeria mais strogonoff todos os dias.

  • Audio

    Sushi?

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Dataset FAQs

What languages and scenarios are covered by Nexdata’s speech recognition datasets?

Nexdata offers speech recognition datasets covering a broad range of languages, dialects, and accents, backed by extensive global language resources. Our datasets include diverse speakers, acoustic environments, and real-world speech scenarios, supporting multilingual ASR, voice assistants, conversational AI, speech-to-text, and other speech-enabled applications.

Can Nexdata customize speech recognition datasets for specific languages or requirements?

Yes. If our off-the-shelf datasets do not fully meet your requirements, Nexdata provides flexible custom data collection, transcription, and annotation services. We can customize datasets based on target languages or dialects, speaker profiles, recording environments, speech scenarios, data volume, and annotation specifications to meet specific ASR development needs.

How does Nexdata ensure the quality and scalability of speech recognition datasets?

Nexdata applies multi-stage quality control throughout speech data collection, transcription, annotation, and validation. Combined with our extensive language resources and scalable collection capabilities, we can support both large-scale multilingual projects and specialized datasets for specific languages, dialects, accents, and speech scenarios.

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