Project description: Car Speech Corpus (Car04)

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◦ Speech recorded simultaneously through 7 microphones and 1 handsfree in 
car driving environments 
◦ A total of 400 speakers 
◦ Car at 2,000cc
◦ Driving environments: 
 - speed: city street(40~60km/h); highway (70~90km/h), 
 - indoors: windows closed, air-con off, audio off
 - outdoors: fair weather, asphalt 
◦ Sampling and data format
 - microphone: 24,000 Hz, 16 bit Windows wave format
 - hands free: 8,000 Hz, 16 bit Windows wave format 
◦ Prompts: 
 - command words for telematics: 173 words
 - command words for navigation: 121 words
 - address: 2,110 items
 - resting places on highways: 75 items
 - train and subway stations: 915 items
◦ Per speaker
 - 170 items per speaker