Acoustic vector sensor (AVS) has been recently researched and developed for acoustic
wave capturing and signal processing. Conventional array generally employs spatially …

Speech enhancement and separation are core problems in audio signal processing, with
commercial applications in devices as diverse as mobile phones, conference call systems …

In everyday environments, we are frequently immersed by unwanted acoustic noise and
interference while we want to listen to acoustic signals, most often speech. Technology for …

This paper deals with two critical issues about uniform circular arrays (UCAs): frequency-
invariant response and steering flexibility. It focuses on some optimal design of frequency …

Voice assistants such as Amazon Echo (Alexa) and Google Home use microphone arrays to
estimate the angle of arrival (AoA) of the human voice. This paper focuses on adding user …

We describe a new method of blind source separation (BSS) on a microphone array
combining subband independent component analysis (ICA) and beamforming. The …

We propose a new algorithm for blind source separation (BSS), in which independent
component analysis (ICA) and beamforming are combined to resolve the slow-convergence …

Differential beamforming, which measures the spatial derivatives of the acoustic pressure
field, can be used in a wide range of small devices that require high-fidelity sound and …

This article presents a theoretical study of differential beamforming with uniform linear
arrays. By defining a forward spatial difference operator, any order of the spatial difference of …

Fixed broadband beamformers using small-size microphone arrays are known to be highly
sensitive to errors in the microphone array characteristics. The paper describes two design …