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 …

In recent years, significant advancements have been made in neural beamforming,
leveraging spectral and spatial cues to enhance their performance in multi-channel speech …

Differential microphone arrays (DMAs) can achieve high directivity and frequency-invariant
spatial response with small apertures; they also have a great potential to be used in a wide …

We present a spatial filtering approach to first-order steerable Differential Microphone Arrays
(DMAs) with arbitrary planar geometry. In particular, the design of the spatial filter is based …

Most of the existing frequency-invariant beamformers (FIBs) with circular arrays are
implemented with omnidirectional microphones, where uniform circular arrays (UCAs) and …

Differential microphone arrays (DMAs) often encounter white noise amplification, especially
at low frequencies. If the array geometry and the number of microphones are fixed, one can …

Conventional direction-of-arrival (DOA) estimation algorithms like MUSIC only allow
localization of fewer number of sources than the number of physical sensors. In this paper …

This letter is dedicated to the design of fully steerable linear differential microphone arrays
(LDMAs). We analyze the steerable ideal spatial responses and explain why conventional …

In this paper, we present an azimuth and elevation constant-beamwidth (CB) differential
beamforming approach for cube arrays. We decompose a global cube beamformer into a …

Differential beamforming combined with microphone arrays can be used in a wide range of
applications related to acoustic and speech signal acquisition and recovery. A practical and …