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1,178 Hours American English Speech Dataset for ASR Training

american english speech dataset
us english speech dataset
english ASR training data
conversational speech dataset
natural speech dataset
speech recognition training data
voice AI training data

This dataset contains 1,178 hours of real-world American English speech collected from diverse native speakers. The recordings capture natural conversational interactions and monologue speech across various everyday scenarios. Each audio sample is transcribed with corresponding text content, speaker ID, gender, and other metadata attributes. 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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This is a paid datasets for commercial use, research purpose and more. Licensed ready made datasets help jump-start AI projects.
SpecificationsSpecifications
Format
16kHz, 16 bit, wav, mono channel;
Recording environment
Low background noise;
Country
America(USA);
Language(Region) Code
en-US;
Language
English;
Features of annotation
Transcription text, timestamp, speaker ID, gender.
Accuracy Rate
Sentence Accuracy Rate (SAR) 95%
Sample Sample
Recommended DatasetsRecommended Dataset
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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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