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478 Hours Spanish Speech Dataset for ASR – Conversational Audio from Spain

spanish asr dataset
spanish speech recognition dataset
spanish speech to text dataset
spanish speech dataset for asr training
smartphone speech dataset

This dataset contains 478 hours of Spanish conversational speech recorded through topic-guided spontaneous dialogues using smartphones. It covers more than 20 domains and includes recordings from 596 native Spanish speakers. Each recording is provided with high-quality transcripts, timestamps, speaker IDs, gender, age, and additional metadata. It is suitable for Automatic Speech Recognition (ASR), speech-to-text, conversational AI, voice AI, speaker diarization, and multilingual speech model training. Quality tested by various 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.

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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
596 native speakers in total, 48% male and 52% female;
Country
Spain(ESP);
Language(Region) Code
es-ES;
Language
Spanish;
Features of annotation
Transcription text, timestamp, speaker ID, gender, PII redacted.
Accuracy Rate
Word Accuracy Rate (WAR) 98%
Sample Sample
  • Audio

    o mm así en concreto. ¿a ti qué te gustaría ver?, ¿o qué géneros te gustan?

  • Audio

    me eh en especial la comedia. mm no sé si hay alguna peli que me apetezca ver.

  • Audio

    pues no sé, la verdad, mis géneros favoritos son los las películas de suspense.

  • Audio

    por ejemplo, los thrillers y todo eso. todo lo que tenga un misterio

  • Audio

    y sea interesante.

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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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