DJ Classy D

Masciarotte, Oliver
June 2005
Mix;Jun2005, Vol. 29 Issue 7, p98
This article focuses on digital amplifiers. The phrase conjures up the vision of either an esoteric piece of hi-fi gear or a cool, compact rackmount amplifier for reinforcement. Digital amplifiers are digital in the binary sense, but pulse width modulation (PWM) power amps are more in the delta Sigma vein of DSD than the brute force approach taken by PCM. Pulse width modulation converts analog amplitude variations into duty-cycle variations of a very high-frequency square wave. If the amplitude is zero, then the square wave is off, not present.


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