Title :
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
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;
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
DOI :
10.1109/ICECS.1999.812249
