Three-Dimensional Sound Source Localization Using B-format Signals

We present a source localization system for first-order Ambisonics (FOA) contents based on a stacked convolutional and recurrent neural network (CRNN). We propose to use as input to the CRNN the FOA acoustic intensity vector, which is easy to compute and closely linked to the sound direction of arrival (DoA). The system estimates the DoA of a point source in both azimuth and elevation. We conduct an experimental evaluation in configurations including reverberation, noise, and various speaker w.r.t. microphone orientations. The results show that the proposed architecture and input allow the network to return accurate location estimates in realistic conditions compared to another recent CRNN-based system.

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A Novel Combined System of Direction Estimation and Sound Zooming of Multiple Speakers

Schimmel

Khaddour

Rund

2015

RADIOENGINEERING

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Abstract. This article presents a new system for estimating the direction of multiple speakers and zooming the sound of one of them at a time. The proposed system is a combination of two levels; namely, sound source direction estimation, and acoustic zooming. The sound source direction estimation uses the so-called energetic analysis method for estimating the direction of multiple speakers, whereas the acoustic zooming is based on modifying the parameters of the directional audio coding (DirAC) in order to zoom the sound of a selected speaker among the others. Both listening tests and objective assessments are performed to evaluate this system using different time-frequency transforms.

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Three-Dimensional Sound Source Localization Using B-format Signals

Cited by 3 publications

References 6 publications

Blind 3D sound source direction using stereo microphones based on time-delay estimation and polar-pattern histogram

Blind 3D sound source direction using stereo microphones based on time-delay estimation and polar-pattern histogram

CRNN-based Joint Azimuth and Elevation Localization with the Ambisonics Intensity Vector

A Novel Combined System of Direction Estimation and Sound Zooming of Multiple Speakers

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