A novel and efficient PCM to PWM converter for digital audio amplifiers

Author

Floros, Andreas C. ; Mourjopoulos, John N.

Author_Institution

Wired Commun. Lab., Patras Univ., Greece

Volume

1

fYear

1999

fDate

1999

Firstpage

165

Abstract

A PCM to PWM converter is presented, based on a novel distortion compensating method which requires no oversampling to be applied in the digital PWM time domain and achieves high-fidelity audio performance at clock rates less than 90 Mbit/sec. The analysis of the performance of this converter is estimated using objective measurements (e.g., amplitude of the harmonics, THD÷noise) for sinewave modulating signals and auralisation tests of typical audio material

Keywords

audio-frequency amplifiers; compensation; harmonic distortion; pulse code modulation; pulse width modulation; PCM to PWM converter; THD; auralisation tests; clock rates; digital audio amplifiers; distortion compensating method; harmonics amplitude; high-fidelity audio performance; objective measurements; sinewave modulating signals; Amplitude estimation; Amplitude modulation; Clocks; Distortion measurement; Harmonic analysis; Performance analysis; Phase change materials; Pulse width modulation; Pulse width modulation converters; Signal analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on

Conference_Location

Pafos

Print_ISBN

0-7803-5682-9

Type

conf

DOI

10.1109/ICECS.1999.812249

Filename

812249