An apparatus comprising: an input configured to receive at least two audio signals; a
frequency domain transformer configured to transform the at least two audio signals into a …

A loudspeaker is driven with a loudspeaker signal to generate sound, and sound is
converted to one or more microphone signals with one or more microphones. The …

S 371 (c)(1),(Continued)(2) Date: Feb. 11, 2015 (87) PCT Pub. No.: WO2014/044812
Primary Examiner—Brian Albertalli PCT Pub. Date: Mar. 27, 2014(57) ABSTRACT (65) Prior …

We propose a denoising methodology for spatial audio recordings acquired with spherical
microphone arrays and encoded with Higher Order Ambisonics (HOA). The goal is to …

In this paper, we present a theoretical basis and implementation strategies for 2.5-
dimensional (2.5 D) sound field reproduction in higher order Ambisonics. The issue …

Beampattern synthesis plays a critical role in fixed beamforming. A fast beampattern
synthesis method is highly desired, especially for broadband beamformers requiring a large …

Real-life acoustic scenes may be recorded with microphone arrays for spatial audio
applications, especially for the purpose of reproducing binaural signals for headphone …

Modal beamformer for circular arrays, which is based on a circular harmonics decomposition
of the sound field, is flexible for use because it is decoupled from the sensor positions. A …

This paper addresses time-domain frequency-invariant beampattern synthesis under
multiple constraints. Mainlobe spatial response variation is introduced to characterize the …

One of the uses of sensor arrays is for spatial filtering or beamforming. Current digital signal
processing methods facilitate complex-weighted beamforming, providing flexibility in array …