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Disseny i implementació d'un amplificador d'àudio de tipus D modulat per una FPGA

Authors: Ropero Serrano, Guillem;

Disseny i implementació d'un amplificador d'àudio de tipus D modulat per una FPGA

Abstract

Aquest treball de final de grau té com a objectiu el disseny i implementació d'un sistema de processament digital i amplificació d'àudio utilitzant una placa de desenvolupament d'una FPGA. El projecte es centra en desenvolupar un amplificador d'àudio de tipus D, conegut per la seva alta eficiència energètica, integrat amb un sistema de processament digital d'àudio (DSP). Mitjançant l'ús d'una FPGA, s'exploren les possibilitats d'un processament digital altament personalitzable i de baix consum. L'estudi inclou el disseny de l'etapa de filtrat i modelat de soroll, la programació de la FPGA, i la validació del sistema complet, demostrant la viabilitat tècnica i pràctica de la proposta. Aquest treball posa en evidència el potencial de les FPGAs com a plataformes versàtils per al desenvolupament de sistemes d'àudio moderns. En el present treball s'ha aconseguit implementar a la FPGA un bloc receptor I2S, una etapa de filtrat i sobre-mostreig de OSR = 32 i un modulador $\Sigma \Delta$ de segon ordre, donant com a resultat que el senyal d'àudio de l'entrada es pugui reproduir mitjançant l'ús d'uns auriculars.

Este trabajo de fin de grado tiene como objetivo el diseño e implementación de un sistema de procesamiento digital y amplificación de audio utilizando una placa de desarrollo con una FPGA. El proyecto se centra en desarrollar un amplificador de audio de tipo D, conocido por su alta eficiencia energética, integrado con un sistema de procesamiento digital de audio (DSP). Mediante el uso de una FPGA, se exploran las posibilidades de un procesamiento digital altamente personalizable y de bajo consumo. El estudio incluye el diseño de la etapa de filtrado y modelado de ruido, la programación de la FPGA y la validación del sistema completo, demostrando la viabilidad técnica y práctica de la propuesta. Este trabajo pone de manifiesto el potencial de las FPGAs como plataformas versátiles para el desarrollo de sistemas de audio modernos. En el presente trabajo se ha logrado implementar en la FPGA un bloque receptor I2S, una etapa de filtrado y sobremuestreo con OSR = 32, y un modulador $\Sigma \Delta$ de segundo orden, resultando en que la señal de audio de salida se reproduzca a través de unos auriculares.

This final degree project aims to design and implement an audio processing and amplification system using an FPGA. The project focuses on developing a Class D audio amplifier, known for its high energy efficiency, integrated with a digital signal processing (DSP) audio system. By leveraging the capabilities of an FPGA, the study explores the possibilities of highly customizable and low-power digital processing. The research includes the design of the filtering and noise-shaping stages, the programming of the FPGA, and the validation of the complete system, demonstrating the technical and practical feasibility of the proposal. This work highlights the potential of FPGAs as versatile platforms for the development of modern audio systems. In the present work, an I2S receiver block, a filtering and oversampling stage with OSR = 32, and a second-order $\Sigma \Delta$ modulator have been successfully implemented on the FPGA resulting in the output audio signal being played through headphones.

Country
Spain
Keywords

I2S, Audio Amplifiers, Amplificadors de baixa freqüència, DSP, FPGA, Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència, Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal, 620, Sigma-Delta

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green