[chuck-users] recording audio input under ChucK control

[Rogan Carr]

Hi Rob,

I might look into what Dan mentioned.  LiSa is perfect for the
application you're looking into, if I understand it correctly.  You
can record sounds into LiSa's buffer, then play it back whenever you
want without having to load another file.  It even manages its own
memory, so you won't have memory gobbling problems if you change
samples.

Cheers,
Rogan

On Wed, Feb 18, 2009 at 10:43 AM, Robert Poor <rdpoor at gmail.com> wrote:
> Graham:
> Doh!  I saw WvOut, but foolishly overlooked it.  I'm embarrassed so say it
> didn't occur to me that
> adc => WvOut w
> is really no different than
> SinOsc s => WvOut w.
> Thank you for the enlightenment.  Life is good in ChucKland.
> - Rob
> On 18 Feb 2009, at 08:22, Graham Coleman wrote:
>
> Rob,
>
> WvOut class should be what you are looking for...
>
> http://chuck.cs.princeton.edu/doc/program/ugen_full.html#WvOut
>
> Graham
>
> On Wed, Feb 18, 2009 at 5:16 PM, Robert Poor <rdpoor at gmail.com> wrote:
>>
>> fellow chukka's:
>>
>> I have not yet found an obvious way to record audio input under ChucK
>> control.  The SndBuf.write() method is documented as "not yet implemented",
>> and test code appears to confirm that it isn't implemented.
>>
>> I want to use ChucK to record snippets during a live performance using
>> MIDI input to control when the recording starts, then use ChucK to play back
>> processed snippets.  I *really* don't want to be switching apps (more
>> specifically -- I don't want to be fiddling on a Mac keyboard), so I need
>> Chuck to control it all.
>>
>> So my gambit -- yet to be tested -- is to use ChucK to spawn a command
>> line function to do the recording, such as:
>>
>>  def void recordSnippet(string toFilename) {
>>    system ("sndrecord " + toFilename);
>>  }
>>
>> ... where sndrecord is a command-line recorder (such as
>> /Developer/Examples/CoreAudio/Services/AudioFileTools/afrecord).
>>
>> Questions, always questions:
>>
>> - Given my constrains (real-time recording must be controlled from a MIDI
>> device, not from a Mac keyboard) is this a sensible approach?  How have
>> other people managed this?
>>
>> - in the ChucK system() call, is there a way to attach to stdin / stdout
>> of a spawned process?  In this particular case, I would like to send it a
>> string to stdin of the spawned process to tell it when to stop recording.
>>
>> - Aside from the afrecord utility in Mac OS /Developer, are there other
>> command-line recording apps that people use and like?
>>
>> Thanks.
>>
>> - Rob
>>
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