FORMANT AIDED NOISE CANCELLATION USING MULTIPLE MICROPHONES

摘要

A noise cancellation device includes a plurality of first computation modules, a formant detection module, a direction of arrival module and a beamformer. The plurality of first computation modules receives raw audio data and generates a respective transformed signal as a function of formants. A first transformed signal relates to speech data and a second transformed signal relates to noise data. The formant detection module receives the first transformed signal and generates a frequency range data signal. The direction of arrival module receives the first and second transformed signals, determines a cross-correlation between the first and second transformed signals, and generates a spatial orientation data signal. The beamformer receives the first and second transformed signals, the frequency range data signal, and the spatial orientation data signal and generates modification data at selected formant ranges to eliminate a maximum amount of the noise data.