DocumentCode
961588
Title
Power digital to analogue conversion using pulse width modulation and digital signal processing
Author
Hiorns, R.E. ; Sandler, M.B.
Author_Institution
Dept. of Electron. & Electr. Eng., King´´s Coll., London, UK
Volume
140
Issue
5
fYear
1993
fDate
10/1/1993 12:00:00 AM
Firstpage
329
Lastpage
338
Abstract
The combination of digital pulse width modulation and oversampled noise shaping is proposed for high quality digital to analogue conversion. High resolution, linearity and efficiency are achieved by converting directly to analogue audio, using class D amplification. Digital signal processing is used to reduce quantisation noise and harmonic distortion at signal frequencies up to 20 kHz. High efficiency is achieved by using MOSFET power switching devices and a pulse repetition rate of 352.8 kHz
Keywords
Hi-Fi equipment; acoustic signal processing; digital-analogue conversion; power electronics; pulse width modulation; 20 kHz; 352.8 kHz; CD players; MOSFET power switching devices; analogue audio; class D amplification; compact disc players; digital PWM; digital signal processing; digital to analogue conversion; harmonic distortion; high resolution; linearity; oversampled noise shaping; power DAC; pulse width modulation; quantisation noise;
fLanguage
English
Journal_Title
Circuits, Devices and Systems, IEE Proceedings G
Publisher
iet
ISSN
0956-3768
Type
jour
Filename
240137
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