9. IPSJ SIG-SLP Corpora and Environments for Noisy Speech Recognition

9-b. Noisy Speech Detection Evaluation Environment (CENSREC-1-C)

Data DOI


Producer, Project

Noisy Speech Recognition Evaluation Working Group,

Special Interest Group on Spoken Language Information Processing,

Information Processing Society of Japan (IPSJ)


Common platform for evaluating independently speech recognition accuracy and speech interval detection under noisy environment.

The data contained in CENSREC-1-C is constructed by concatenating the digit string which is the same as in AURORA-2J.


Simulation data:
104 speakers (52 males, 52 females) 5824 utterances in total
Recording data in real environments:
10 speakers(5 males, 5 females)160 utterances in total

Speech file format

RAW format (8kHz, 16bit, Mono, LittleEndian)

Distribution media



For research and development purposes only


No fee

Speech sample for test listening

Concatenating the digit strings

Noise environment: Restaurant

Utterance: 139O-27O6571-3-4625-5O217-6080064-83692-9443-O789-0877

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