Abstract: A system and method for tracking and recognizing multiple desired acoustic signals and processing the multiple signals with a single microphone is disclosed. The microphone includes multiple transducer elements, each of which produces a distinct electrical signal. The electrical signal is converted to a digital signal and beamforming and digital signal processing is performed on the electrical signals. The signals are then analyzed for the presence of speech. In the case where speech is present in multiple signals, the speech containing signals are then mixed for outputting.

Abstract: A non-adaptive system and method for improving on-axis pickup of a signal by a transducer, such as a microphone, where the signal received by the transducer is can be spatially represented as lobes or beams, the on-axis pickup being improved by removing the side portions of the beams. The input signal, or signals, has a predetermined location, whether that is at zero degrees on a polar plot or elsewhere, and the system produces an output beamwidth as narrow as possible. The input beams of the signal (or signals) received are processed to produce cancellation beams, and the cancellation beams are then steered, using phase or time delays, to overlap with the desired input beams outside of the desired output beamwidth.