[chuck] using multiple dac's in one shred?

[Ge Wang]

Hi Gary (both)!

It seems bpmulti.ck is referring to the same dac - in which case it 
should work.
(in fact, current implementation doesn't have multi-dac capabilities)

Running multiple instances of bpmulti.ck should be no problem - one 
consideration
is making sure there is no clipping - there are more things connect to 
the dac now.  One
quick test/hack is to chuck another file that sets the global gain of 
the dac:

// this is global - set the global dac gain
.1 => dac.gain;

you can also change dac gain in bpmulti.ck - another solution is to 
change the gain
of ugen's going into the dac.  But this is slightly less scalable, 
though it works too.

Best,
Ge!

On Jan 26, 2005, at 11:51 AM, Gary P. Scavone wrote:

> Hi Gary,
>
> Multi-dac usage is generally not good unless you can synchronize the 
> two clocks ... otherwise, you get drift over time.
>
> --gary
>
> On Jan 26, 2005, at 11:46 AM, Gary Williams wrote:
>
>>
>> I was thinking about multiple voice chords and I see dac described in 
>> the
>> Programming Guide as
>>
>> [ugen] dac
>>     * digital/analog converter
>>     * abstraction for underlying audio output device
>>
>> so I thought that it could be the target of multiple ugen's in one 
>> shred,
>> and tried it here
>> http://garywilliams.org/chuck/bpmulti2.ck
>>
>> It seems to work. So I used it as the basis of an article on 
>> http://b-chuck
>> blogspot.com/.  But I notice that if I use multiple instances of this
>>
>>   chuck bpmulti2.ck bpmulti2.ck
>>
>> it generates interference.
>>
>> Is multiple dac usage legal (and proper)? And does anyone know why 
>> multiple
>> instances generate interference?
>>
>> --Gary Williams
>> ----
>> Chess: http://chessnut.net/
>> Homepage: http://garywilliams.org/
>> Blog: http://tfs_reluctant.blogspot.com/
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>>
>>
>>
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