Sound source localization is becoming increasingly popular localization technique that has a wide range of applications. The aim of this master thesis is to present different sound source localization methods by creating and transcribing a collection of audio recordings in order to test some of the described methods. In the first part the main concepts and methods of sound source localization are presented.
The examples of the applications of sound localization methods are listed together with the short history overview. The existing work in the field is also described.
The thesis gives a more detailed description of the methods based on time difference of arrival in each microphone.
The thesis presents different methods for calculating time differences and explains the geometry of the problem along with several methods used to calculate the speaker position.
Experimental work is described in the last part of the thesis.
First, the sound recordings and protocols used for recording them are presented. Next, the implementation of some previously mentioned methods is described. In conclusion is given the analysis and the evaluation of the results.
|