[linux-audio-user] ams PCM input?

Them idragosani at chapelperilous.net
Tue Jan 18 23:15:44 EST 2005


Paul Coccoli wrote:

>>Isn't ams a soft-synth that is controllable by MIDI?  I don't think it's
>>capable of doing anything with PCM audio input, you'd need a MIDI keyboard or
>>something like Rosegarden to control it.
>>
> 
> 
> So what does the PCM IN module do?  Many real synths have audio inputs
> so you can route a signal through the filters.

Not sure.  Don't see anything in the AMS documentation that refers to 
the PCM In module, although I see the header and class file for it in 
the source code -- no comments even in the header file about what it is.

>>>Also, is there a module that will convert an audio signal to CV?  I
>>>know MCV converts MIDI to CV.
>>
>>That would be a real trick.  MIDI is easy because it is a defined protocol with
>>a finite set of instructions... you are basically doing a digital-to-analog
>>conversion of MIDI control instructions to a defined set of voltages to control
>>a synth.  There might be something out there, but I daresay it's probably not
>>software-based.  You are probably better off getting a bass or guitar MIDI
>>interface and using that.
> 
> Granted, it may not be easy to convert a pitch to CV, but it should be
> possible.  We have tuner software that detects a frequency, right? 
> Let's map that frequency value to a CV value and run it into an
> oscillator.  If it doesn't exist, I'd be willing to take a crack at
> writing one, but not if I can't get ams to actually do anything.

Yep, I mention that very thing (tuning software) in another email.

-- Brett



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