Title :
Robust speech coding using microphone arrays
Author :
Li, Zhao ; Hoffman, Michael W.
Author_Institution :
Dept. of Electr. Eng., Nebraska Univ., Lincoln, NE, USA
Abstract :
The paper describes a robust speech coder that uses a microphone array. The array processor functions as a noise canceller and a voice activity detector, thus giving the coder improved speech quality and lowered bit rates even in extremely noisy conditions (SNR<0 dB). Preliminary results have shown the effectiveness of the scheme under several noisy and reverberant room environments.
Keywords :
acoustic noise; acoustic transducer arrays; architectural acoustics; array signal processing; interference suppression; microphones; speech coding; vocoders; array processor; bit rates; microphone arrays; noise canceller; noisy conditions; reverberant room environments; robust speech coding; speech quality; voice activity detector; Bit rate; Detectors; Microphone arrays; Noise cancellation; Noise robustness; Sensor arrays; Speech coding; Speech enhancement; Speech processing; Working environment noise;
Conference_Titel :
Signals, Systems & Computers, 1997. Conference Record of the Thirty-First Asilomar Conference on
Print_ISBN :
0-8186-8316-3
DOI :
10.1109/ACSSC.1997.680026
