Implementacija zvukomjera korištenjem neovisnog DSP sustava

master's thesis

• Title (english): A sound level meter implementation using an independent DSP system
• Author: Mirko Grebenar
• Mentor: Kristian Jambrošić (mentor)
• Committee member: Kristian Jambrošić (predsjednik povjerenstva)
• Committee member: Bojan Ivančević (član povjerenstva)
• Committee member: Ivan Đurek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2015-07-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Zvukomjer je uređaj za mjerenje razine zvučnog tlaka. Uobičajene funkcije zvukomjera su primjena težinskih filtara, oktavna i tercna analiza, vremensko usrednjavanje i mjerenje vršne vrijednosti. Cilj ovog rada je implementacija osnovnih funkcija zvukomjera korištenjem sustava za obradu digitalnih signala TMX320C5535 eZdsp, što zahtijeva dobro znanje iz područja digitalne obrade signala i programiranja u programskom jeziku C. U prvom dijelu ovog rada opisani su osnovni dijelovi zvukomjera i teoretska podloga za njihovo razumijevanje. Drugi dio rada se fokusira na praktičnu implementaciju pomoću navedenog digitalnog sustava.

Abstract (english)

A sound level meter is a device used to make sound pressure level measurements. Most sound level meters have the same set of adjustments, including A and C frequency weighting filters, octave and one-third octave filters, linear and exponential time weighting and peak detector. Main goal of this work was implementation of most common functions of sound level meter on a TMX320C5535 eZdsp. It required good knowledge of digital signal processing and programming in C programming language. The first section of this work describes parts of sound level meter and theory from signal processing needed for understanding it, while the second section dealt with practical implementation.

• Keywords: zvukomjer; digitalni filtar; digitalna obrada signala; težinski filtri; vremenska integracija; bilinearna transformacija
• Keywords (english): sound level meter; digital filter; digital signal processing; frequency weighting; time weighting; bilinear transform
• Language: croatian
• URN:NBN: urn:nbn:hr:168:830133
• 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: 2018-02-06 09:00:44