Trokanalni sustav za digitalnu obradu audiosignala

master's thesis

• Title (english): Three channel system for digital audio signal processing
• Author: Matija Vuković
• Mentor: Igor Krois (mentor)
• Committee member: Igor Krois (predsjednik povjerenstva)
• Committee member: Tomislav Suligoj (član povjerenstva)
• Committee member: Marko Koričić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2015-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Sa sve prihvatljivijim cijenama naprednih audio komponenata, otvara se niz
mogućnosti za samogradnju.
Ovaj rad prikazuje izradu digitalnog audio procesora i kontrole za isti.
Korišten je digitalni audio procesor TAS3103, te mikrokontroler STM32F407, uz
prateće komponente za prijem i pretvorbu ulaznog signala. Naglasak pri
projektiranju je bio na jednostavnosti i praktičnosti korištenja sustava.
U sustav ulazi optički signal, pretvara u električni i modificira prolaskom kroz
audio procesor. Na izlazu se dobiva signal pripremljen za I2S sabirnicu, koja se
dalje prosljeđuje na pojačalo.
Mikrokontroler ima ulogu sučelja između krajnjeg korisnika i audio procesora.
Služi za primanje koeficijenata sa računala, te prosljeđivanje istih na hardverski
ostvarene filtre unutar TAS3103. Koeficijenti se u procesor šalju korištenjem I2C
sabirnice, a sa računala se dobivaju korištenjem UART sučelja.
Koeficijenti se šalju s računala korištenjem aplikacije koja komunicira s
mikrokontrolerom. Pritom je osigurana mogućnost definiranja koeficijenata u
zasebnoj tekstualnoj datoteci te učitavanje iste, kao i upis koeficijenata jedan po
jedan.

Abstract (english)

As the prices of advanced audio components decrease, a wide range of
possibilities for DIY audio opens.
This thesis shows one way to build a digital audio processor and a suitable
control unit. A TAS3103 digital audio processor and an STM32F407 microcontroller
were used, along with corresponding components for reception and conversion of
the signal. The focus while designing the system was to make the use as simple as
possible for the end user.
Entering the system we have an optical signal, which gets converted and
modified by passing through an audio processor. The system outputs a signal that
is suitable for the I2S bus, which is in turn being passed to an amplifier.
The microcontroller servese as an interface between the end user and the
processor. It receives the coefficients and passes them to the hardware filters inside
the processor. The coefficients are passed from a computer using an UART
interface, and then passed to the processor using an I2C bus.
On the computer there is an application which communicates with the
microcontroller and enables the end user to input the coefficients. The coefficients
can be input one by one, or all at once using a text file.

• Keywords: digitalni audio procesor; mikokontrolerski sustavi; I2C; UART; I2S
• Keywords (english): digital audio processor; microcontroller systems; I2C; UART; I2S
• Language: croatian
• URN:NBN: urn:nbn:hr:168:683285
• 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: 2019-03-14 02:13:10