[sdiy] Hardware/software LFO Designs

[Wooster Audio]

Are you talking about modulating the uC's instruction clock or the uC's 
sample clock?  If the former, a multi-MHz VCO could be hard to design 
with the kind of frequency range you would want.  If the latter, what 
advantage would there be over using the uC's timers to internally create 
a sample clock (based on a control voltage read by an on-board ADC)?

Nathan

On 7/5/2010 12:00 AM, Paul Perry wrote:
> On this subject.. with micros being so cheap these days, I think a 
> case could be made for designing a fixed frequency
> oscillator around one, and then controlling the frequency
> by modulating the clock of the micro.
>
> One advantage is that you don't have to care about the waveform of the 
> voltage controlled osc that provides
> the clock.
>
> paul perry Melbourne Australia
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