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
fDate :
10/1/1993 12:00:00 AM
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;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings G
