magistrsko delo
Žan Tomazini (Author), Zdravko Kačič (Mentor)

Abstract

Postopki oblikovanja snopa se v sistemih akustičnih kamer uporabljajo za lokalizacijo zvočnih izvorov in pridobivanje zvočne slike prostora. Večina temelji na preračunavanju TDOA med posameznimi mikrofonskimi pari in izvajanju zamik-in-vsota nad signali. Ena izmed možnosti računanja koordinat izvora je multilateracija, s čimer pa ne dobimo celotne zvočne slike. SRP-PHAT je robusten postopek s katerim oblikujemo snop mikrofonskega polja in ga usmerimo v množico točk v iskalnem prostoru. S tem pridobimo informacijo o moči zvoka in lahko posledično določimo položaj zvočnega izvora. Računanje SRP-PHAT je procesno zahtevno, zato uporabimo SRC kot učinkovit način iskanja globalnega maksimuma.

Keywords

oblikovanje snopa;SRP-PHAT;akustična kamera;lokalizacija zvočnega izvora;magistrske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
Publisher: [Ž. Tomazini]
UDC: 621.396.963.5(043.2)
COBISS: 22840854 Link will open in a new window
Views: 552
Downloads: 49
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Beamforming for audio source localization implementing acoustic camera
Secondary abstract: Beamforming is used in acoustic camera systems for sound sorce localization and obtaining a full sound image. Most are based on calculating TDOA between different microphone pairs and performing delay-and-sum on captured sound signals. One of the options for calculating sound source coordinates is multilateration which does not give a full sound image. SRP-PHAT is a robust process for microphone array beamforming that can be steered in the direction of points in the search space. With this we obtain sound power information and can consequently pinpoint location of the source. Calculating SRP-PHAT is process power costly therefore we use SRC as an effective way of finding global maximum.
Secondary keywords: beamforming;SRP-PHAT;acoustic camera;sound source localization;
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za elektrotehniko, računalništvo in informatiko, Elektrotehnika
Pages: X, 69 f.
ID: 11204883