Naslov
Electroacoustic Measurements on Audio Coders

Autori
Jambrošić, Kristian ; Ivančević, Bojan ; Zorić, Igor

Izvornik
AUTOMATIKA, Časopis za automatiku, mjerenje, elektroniku, računarstvo i komunikacije (0005-1144) 41 (2000), 1-2; 63-67

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, prethodno priopćenje, znanstveni

Ključne riječi
audio coders; electroacoustic measurements; psychoacoustic model

Sažetak
To transfer audio data via computer networks, it is necessary to make data reduction because of their limited transfer speeds. A common way to do data reduction is using the psychoacoustic model of the human hearing. Nowadays, the fast development of the Internet puts demands on the efficiency of audio coders. A number of objective and subjective experiments have to be done in order to compare different audio coders. This paper compares three different audio coding systems: MPEG-2 Layer III, MPEG-4 AAC and Real Audio G2 by analyzing their THD, S/N ratio, cut-off frequency and impulse response. The MPEG-4 AAC coding system showed the best results.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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