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An Auto-Tracking Auto-Beamforming Microphone Array for Sound Recording

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An auto-seeking microphone array consisting of novel multistage processing is presented in this paper. The microphone array can automatically detect the desired speech in the presence of noise and track the speech sources. A combination of dual-beamforming and post-beamformer enhancement significantly improve the quality and intelligibility of desired speech at the output of the system. Applications for such a system include hands-free telephony, teleconferencing, and in the special situation where speech signals must be picked up in a noisy acoustic environment and the microphones are hidden (for example, in a forensic covert recording system).:

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