Fourth European Conference on Speech Communication and Technology

Madrid, Spain
September 18-21, 1995

Speech-Seeking Microphone Array with Multi-Stage Processing

Yuchang Cao, Sridha Sridharan, Miles Moody

Speech Research Lab.,Signal Processing Research Centre, School of Electrical and Electronic Systems Engineering, Queensland University of Technology, Brisbane, Australia

This paper describes an auto-seeking microphone array consisting of novel multiple processing stages for speech acquisition. The array automatically detects the speech in the presence of noise and tracks the speech sources. A combination of dual-beamforming and post-beamformer enhancement significantly improves the quality and intelligibility of desired speech at the output of the system. Applications for such a system include hands-free telephony, teleconferencing and special situations where speech signals must be picked up in a noisy acoustic environment and the microphones are hidden (as, e.g., in a forensic covert recording system).

Full Paper

Bibliographic reference.  Cao, Yuchang / Sridharan, Sridha / Moody, Miles (1995): "Speech-seeking microphone array with multi-stage processing", In EUROSPEECH-1995, 1991-1994.