Re: [Repeater-Builder] Re: Audio Reproduction

[scomind]

Hi Joe,   At some point in DSP, audio processing, synthesis, etc- all thrown into a bag and each manipulated with numbers or programming, we sort of lose base with what we are doing. We could create AM, FM, PM, SSB, PSK, FSK, what have you.   And as amateurs and technical people, it'd be good if we understood both the theory and the practice. Else, we become removed from the knowledge base and are prevented from participating.     AFAIK, there haven't been any commercial two-way radios built in the last 15 to 20 years that use PM. I could be wrong, but I can't think of any.   The PLL is an excellent platform for a frequency modulator and exciter, assuming such things as phase noise are controlled. It's not surprising the world has gone that way.   Jeff's comments about DSP are also well taken.   These are new ways to get better results from old theory. The theory hasn't changed and we should be familiar with it.   73, Bob Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/   To unsubscribe from this group, send an email to: [EMAIL PROTECTED]   Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.