[sdiy] Last question about LFOs

[Tom Wiltshire]

On 9 Apr 2009, at 00:06, Jason Proctor wrote:

>> If I have an oscillator that has switchable capacitors, is there  
>> any way
>> to switch these electronically using some sort of logic control  
>> rather
>> than having a physical switch?
>
> could use a cmos analogue switch - like a 4051 or something

Yeah, the Oberheim Xpander filter does this on the first stage, IIRC.  
That's a filter, and you're talking about an oscillator, but it's  
close enough.

T.