Abstract: The present invention provides a wireless electronic device for audio signal procession and transmission. In one embodiment, the wireless electronic device comprises a primary unit being worn on one ear of a user, wherein the primary unit comprises a main electrical circuitry for receiving, processing, and transmitting audio signals, wherein the audio signals may be received from different sources; a speaker being electronically coupled to the main electrical circuitry for outputting the processed audio signals to a user; a microphone being electronically coupled to the main electrical circuitry for audio signal inputting to the main electrical circuitry; an interface being electronically coupled to the main electrical circuitry for allowing connection with a secondary attachment; and a power source for powering the wireless electronic device; whereby when the interface is not connected with the secondary attachment, the wireless electronic device functions as a mono headset.

Abstract: A method of processing signals received from an array of sensors includes sampling and digitally converting the received signals. The digitally converted signals are processed to provide an output signal, the processing including filtering the signals using a first adaptive filter that enhances a target signal of the digitally converted signals and a second adaptive filter that suppresses an unwanted signal of the digitally converted signals, and processing the filtered signals in a frequency domain to further suppress the unwanted signal. The digitally converted signals are processed to determine a direction of arrival of the target signal, the processing including filtering the signals using a third adaptive filter.

Abstract: The present invention uses a method of processing signals in which signals received from an array of sensors are subject to system having a first adaptive filter arranged to enhance a target signal and a second adaptive filter arranged to suppress unwanted signals. The output of the second filter is converted into the frequency domain, and further digital processing is performed in that domain. The invention is further enhanced by incorporating a third adaptive filter in the system and a novel method for performing improved signal processing of audio signals that are suitable for speech communication.