This paper focuses on utilization of B-format signals in sound source localization using two different methods. Whereas the first method is based on the principle of B-format signals, the second one is based on energetic analysis of B-format signals. Average square difference function method is simulated and tested in order to be compared with the previous methods.

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Abstract-This contribution deals with sound source direction estimation in the three-dimensional space. An energetic analysis method based on B-format signals processing is presented in this paper. This method is able to estimate the direction of arrival for multiple sound sources in the three dimensional space. A single SoundField microphone can be used to pick-up B-format signals indirectly. The method has been simulated in Matlab and tested in a real environment. Experimental results demonstrate the validity of this method.

This paper presents a method for sound source direction estimation called Energetic analysis method, and studies the influence of the localization of the signal in the time and the frequency domains on the accuracy of this method. The resolution in time-frequency domain differs depending on the used transform. Different transforms are used in this paper, namely short-time Fourier transform, zero-padding STFT, and Gabor transform.

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.