Title page for E-project-041409-210039

Project Type MQP

Submission date 2009-04-14

Authors
Wadii Bellamine, liquid@WPI.EDU, ECE
Jameson John Collins, jaycol@WPI.EDU, ECE
Craig Ropi, ECE

URN E-project-041409-210039

Sponsor NECAMSID

Title DSP Modulated Class D Audio Amplifier

Advisor
Klein, Andrew G, EE

Availability unrestricted

Abstract
The goal of this project was to create an 80W, 95% efficient Class D audio amplifier with less than 0.5% harmonic distortion and greater than 100 dB zero-input signal to noise ratio that accepts digital inputs. The amplifier that was built comprised of a three-state digital modulator, an H-bridge amplifier, and a passive filter and was capable of accepting both digital and analog audio inputs by means of the SPDIF protocol and an ADC. To allow the modulator design to be quickly altered, it was implemented on a DSP. Because the modulator could be easily changed, several different modulation schemes were simulated, designed and tested in order to achieve optimal audio quality and efficiency results.

Files
report.pdf
There is one file which has been withheld at the advisor's request.

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Project Type	MQP
Submission date	2009-04-14
Authors	Wadii Bellamine, liquid@WPI.EDU, ECE Jameson John Collins, jaycol@WPI.EDU, ECE Craig Ropi, ECE
URN	E-project-041409-210039
Sponsor	NECAMSID
Title	DSP Modulated Class D Audio Amplifier
Advisor	Klein, Andrew G, EE
Availability	unrestricted
Abstract The goal of this project was to create an 80W, 95% efficient Class D audio amplifier with less than 0.5% harmonic distortion and greater than 100 dB zero-input signal to noise ratio that accepts digital inputs. The amplifier that was built comprised of a three-state digital modulator, an H-bridge amplifier, and a passive filter and was capable of accepting both digital and analog audio inputs by means of the SPDIF protocol and an ADC. To allow the modulator design to be quickly altered, it was implemented on a DSP. Because the modulator could be easily changed, several different modulation schemes were simulated, designed and tested in order to achieve optimal audio quality and efficiency results.
Files	report.pdf There is one file which has been withheld at the advisor's request.