[sdiy] Which programable chip?

[Scott Nordlund]

Why would you need to run the audio through the processor?

If I'm not mistaken, are you wanting to route one input (of 8 total) to one output (of 8 total)?  You can do that with 2 4051 multiplexers, and not have to worry about any ADCs or DACs or high speed processors or anything.  You only need to send 6 bits to control everything.

And if you want to be able to route multiple signals simultaneously, it may be slightly more complicated (depending on whether you want arbitrary routings, etc.)- you may need a crosspoint matrix, even 16 4066 chips (or similar), but it's the same basic idea to use analog switches to do the work.

----------------------------------------
> From: taciturn_unquiet at hotmail.com
> To: synth-diy at dropmix.xs4all.nl
> Subject: RE: [sdiy] Which programable chip?
> Date: Wed, 15 Apr 2009 15:06:05 -0500
>
>
>
>> Arduino certainly looks easy to use, but it doesn't seem to have any
>> analogue outputs. Is there anything like Arduino that also includes on
>> board DACs (at least 12 bit)?
>
> That's it... there's the problem. I need 8 analog ins and 8 analog outs and all the switchy bits in between.
>
> -Ian
>
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