Hardware Analysis Community Forums http://www.hardwareanalysis.com/content/topic/63609/ 2008-07-25T01:53:55-05:00 http://www.hardwareanalysis.com/content/topic/63609/ http://media.hardwareanalysis.com/halogo.gif text/html 2006-11-28T12:50:55-05:00 Andy Repton http://www.hardwareanalysis.com/content/topic/63609/?l=1#0 Thanks for an interesting article. Useful as I am looking at using the UCD modules for an active speaker project.<br /> <br /> I'm a little puzzled by the use of AM radio as an analogy to explain class D though, as an AM modulated signal has an envelope that follows the audio whilst the result of modulation in class D is a signal that is always rail to rail. The audio varies the duty cycle of the output, not its amplitude. <br /> <br /> This of course, has no bearing on the sound!<br /> <br /> Andy