Sound field separation for planar sources facing a parallel reflector

Multi-sources separation for sound source localization

Spatial localization given measurements of the sound field at a microphone array is a computationally challenging task. While big progress has been achieved in Azimuth localization, little attention has been paid to localization in distance. This paper presents a multi-sources localization model based on Time Delay of Arrival (TDOA) using only two microphones. The proposed method requires estim...

Regularity for the near Field Parallel Refractor and Reflector Problems

We prove local C1,α estimates of solutions for the parallel refractor and reflector problems under local assumptions on the target set Σ, and no assumptions are made on the smoothness of the densities.

Methods for Separation of Harmonic Sound Sources using Sinusoidal Modeling

Methods are proposed for separation of harmonic sound sources using sinusoidal modeling. A local nonlinear least-squares (NLS) frequency estimator is proposed to resolve sinusoids that are close in frequency. An iterative analysis scheme using interpolated parameter trajectories and subtraction of detected components is presented. A measure is proposed for testing the accuracy of the model.

Separation of Sound Sources: a Machine Audition Perspective

Sound field separation with sound pressure and particle velocity measurements.

In conventional near-field acoustic holography (NAH) it is not possible to distinguish between sound from the two sides of the array, thus, it is a requirement that all the sources are confined to only one side and radiate into a free field. When this requirement cannot be fulfilled, sound field separation techniques make it possible to distinguish between outgoing and incoming waves from the t...