This corpus comprises 782 entries uttered by 10 speakers of different dialects, ages and various educational levels (3 males and 7 females), recorded over 4 channels (Mic1: SHURE SM58; Mic2: ANC-700 Head-mounted; Mic3: TELEX M-60; Mic4: ACOUSTIC MAGIC). The database comprises 800 Chinese items per channel: 30 stocks, 10 nation names, 10 Chinese city names, 30 person names. Speech samples are stored as a sequence of 16-bit 22.05kHz WAV for 0.97 hours of speech per channel. The total capacity of the data is 587 Mb. Each speaker read 120 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.