Ekvalizacija sustava za audio reprodukciju

master's thesis

• Title (english): Equalisation of audio reproduction systems
• Author: Nikola Kudrna
• Mentor: Kristian Jambrošić (mentor)
• Committee member: Kristian Jambrošić (predsjednik povjerenstva)
• Committee member: Marko Horvat (član povjerenstva)
• Committee member: Antonio Petošić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2021-07-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Ekvalizacija je postupak linearizacije frekvencijskog odziva audiosustava prije reprodukcije zvuka. Ekvalizatori se najčešće koriste za ispravljanje nepravilne frekvencijske karakteristike zvučnika i u produkciji glazbe za frekvencijsko manipuliranje nad audio zapisom u svrhu dobivanja raznih efekata. Više je vrsta ekvalizatora kao što su parametarski, grafički, dinamički i dr., a implementiraju se FIR i IIR (digitalnim) filtrima. Višekanalni audiosustavi mogu se ekvalizirati u jednoj ili više točaka, a prije ekvalizacije potrebno je snimiti prijenosnu karakteristiku sustava u obliku impulsnog odziva. Ekvalizacija je implementirana MATLAB skriptom i provedena na sustavu od 18 kanala u Auralizacijskom laboratoriju (AuraLab) na FER-u, te su prikazani i opisani rezultati ekvalizacije.

Abstract (english)

Equalization is the process of linearizing the frequency response of an audio system before sound reproduction. Equalizers are most commonly used to correct the irregular frequency response of speakers and in the production of music to manipulate frequency characteristics of the audio track for the purpose of obtaining various effects. There are several types of equalizers such as parametric, graphical, dynamic, etc., and they are implemented with FIR and IIR (digital) filters. Multi-channel audio systems can be equalized at one or more points, and prior to equalization it is necessary to record the transfer characteristic of the system in the form of an impulse response. Equalization was implemented with the MATLAB script and performed on an 18-channel system in the Auralization Laboratory (AuraLab) at FER, Zagreb, and the results of equalization
are presented and described.

• Keywords: ekvalizacija; višekanalni; audiosustavi; frekvencijska obrada signala; FIR filtri; impulsni odziv; AuraLab
• Keywords (english): equalization; multi-channel; audio systems; frequency signal processing; FIR filters; impulse response; AuraLab
• Language: croatian
• URN:NBN: urn:nbn:hr:168:376432
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-01-13 09:14:26