Mandarin Chinese Telephone Speech Recognition Corpus - Digit String (649 people)

Full Official Name: Mandarin Chinese Telephone Speech Recognition Corpus - Digit String (649 people)
Submission date: Jan. 24, 2014, 4:30 p.m.

This corpus comprises 750 entries uttered by 649 speakers of different dialects, ages and various educational levels (340 males and 309 females), recorded over the fixed telephone network. The database comprises 9,750 digit strings. Speech samples are stored as a sequence of 16-bit 8kHz WAV for a total of 16.28 hours of speech. Each speaker read 15 items. Text files are stored in Unicode format. All data have been proofread manually. The transcriptions include non-speech markers (background noise, background speech, speaker sounds) as well as markers for mispronunciation, channel distortions, words left-out and duplicates. The corpus aims to be applied to the testing and telephone natural speech recognition system.

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