Project description: Car Speech Corpus (Car02)

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◦ Speech recorded simultaneously through 7 microphones and 1 handsfree
◦ A total of 400 speakers
◦ Car at 2,000 cc 
◦ Driving environment
 - Env1: city driving (30-60km/h)
 - Env2: highway driving (70-90km/h)
 - Common in both Envs: clear weather, asphalt, windows closed, air-con/heater 
off, audio off 
◦ Sampling and data format
 - microphones: 24,000 Hz, 16 bit Windows wave format
 - handsfree: 8,000 Hz, 16 bit Windows wave format 
◦ Prompts
 - 900 single digits and quadruple digits
 - 63 dialing commands
 - 306 car audio control commands
 - 124 car control switch commands
 - 57 navigation commands
 - 121 PDA commands
 - 446 place names (districts or larger places)
 - 53 main road names (highways or larger roads)
◦ Per speaker
 - 1 set of 206-207 words