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Pridobivanje in analiza zvočne zbirke za prostorsko lokalizacijo govorcev
ID Čufer, David (Author), ID Dobrišek, Simon (Mentor) More about this mentor... This link opens in a new window

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PID: 20.500.12556/rul/7d0ed859-50e0-47fa-a768-4ec4b6c9c53c

Abstract
Lokalizacija na osnovi zvoka postaja vedno bolj razširjena. Kljub temu, da se že uporablja na velikem številu področij, obstaja še veliko možnosti za njeno uporabo. Glavni cilji magistrske naloge so predstavitev postopkov za lokalizacijo oseb v prostoru na osnovi zvokov, ki jih povzročajo, izdelava in ureditev zbirke zvočnih posnetkov ter preveriti nekaj postopkov lokalizacije na ustvarjeni zbirki. V prvem delu so opisani področje in primeri uporabe lokalizacije z zvokom ter različni postopki za njeno izvedbo. Na kratko je predstavljena tudi zgodovina in obstoječa dela na tem področju. V nadaljevanju so podrobneje predstavljeni postopki lokalizacije z uporabo računanja časovne razlike pri prihodu zvoka v posamezen mikrofon (v angleščini so poznani pod kratico TDOA). Predstavljenih je več načinov za računanje časovnega zamika. Predstavljena je tudi geometrija problema in različni načini za izračun položaja govorca. Zadnji del magistrske naloge je namenjen eksperimentalnemu delu. Najprej je predstavljena zbirka zvočnih posnetkov in njeno pridobivanje. V nadaljevanju je opis izvedbe različnih, prej predstavljenih postopkov in preizkus na pridobljeni zbirki podatkov. Sledi še analiza rezultatov in njihovo ovrednotenje.

Language:Slovenian
Keywords:lokalizacija na osnovi zvoka, TDOA
Work type:Master's thesis/paper
Organization:FE - Faculty of Electrical Engineering
Year:2017
PID:20.500.12556/RUL-92681 This link opens in a new window
Publication date in RUL:27.06.2017
Views:1075
Downloads:574
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Secondary language

Language:English
Title:Collection and analysis of an audio database for spatial localization of speakers
Abstract:
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.

Keywords:sound source localizaton, TDOA

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