Time Frequency Source Separation and Direction of Arrival Estimation in a 3D Soundscape Environment.

TY - JOUR

T1 - Time Frequency Source Separation and Direction of Arrival Estimation in a 3D Soundscape Environment.

AU - Chesmore, David

AU - Bunting, Oliver

PY - 2013/8/11

Y1 - 2013/8/11

N2 - The DUET (Degenerative Unmixing and Estimation Technique) algorithm has been shown to be an effective method for the separation of multiple sources from a stereo mixture. We present a time–frequency masking technique based on DUET for the blind separation of N sources from a four channel B format audio mixture. This method is applicable where sources that are both radially sparse in three dimensions, and exhibit approximate W-disjoint orthogonality, i.e. where the signals are approximately sparse in the time–frequency domain. Using the B-format mixture, we generate a three dimensional power-weighted geodesic histogram and show the peak locations correspond to the direction of arrival of the sources. These peaks are then used to generate a time–frequency mask to separate the sources from the w-channel of the B-format mixture. Experimental separation results using speech signals are presented.

AB - The DUET (Degenerative Unmixing and Estimation Technique) algorithm has been shown to be an effective method for the separation of multiple sources from a stereo mixture. We present a time–frequency masking technique based on DUET for the blind separation of N sources from a four channel B format audio mixture. This method is applicable where sources that are both radially sparse in three dimensions, and exhibit approximate W-disjoint orthogonality, i.e. where the signals are approximately sparse in the time–frequency domain. Using the B-format mixture, we generate a three dimensional power-weighted geodesic histogram and show the peak locations correspond to the direction of arrival of the sources. These peaks are then used to generate a time–frequency mask to separate the sources from the w-channel of the B-format mixture. Experimental separation results using speech signals are presented.

UR - http://www.scopus.com/inward/record.url?scp=79961137345&partnerID=8YFLogxK

U2 - 10.1016/j.apacoust.2011.05.018

DO - 10.1016/j.apacoust.2011.05.018

M3 - Article

SN - 0003-682X

VL - 74

SP - 264

EP - 268

JO - Applied Acoustics

JF - Applied Acoustics

IS - 2

ER -