Re: [Sndobj-devel] Python SNdIO /Core Audio SetSr

[Victor L. <vic...@nu...>]

You will need to set the SR on all objects
to 22050. It is generally the last argument
(which defaults to 44100) of each object. You
have done it with all SndObjs, but it looks
like you left the SndCoreAudio to its default.
You need to create it with the right SR.

Victor

>
> Hi
> I've been tinkering with PySndObj on the Mac .
> BTW it built out of the box for python 2.5 with the
> MacPython framework and appropriate build switches to
> build the python wrapper. The examples work OK as does the
> I have now got  to the point where I'm able to read an AIF
> file and providing it's a PCM file get it to play back OK
> apart from when the sampling rate is not the default
> 44100. In the case in question it is 22050 but it plays
> back as if 44100. (Thanks BTW to the wav file example
> post) I have tried the commented options shown in the code
> below, I'm new to the API so I'm not
> sure if this is a bug or I'm not setting the sampling rate
> in the right place. So suggestions welcomed. The example
> file is in the /Developer/Examples/Java/Sound source tree.
>
> import sndobj
> fn = '22-new.aif'
> #fn = 'sound.aif'
> af = sndobj.SndAiff(fn,sndobj.READ,2)
> sr = af.GetSr()
> vs = af.GetVectorSize()
> print sr,vs
> T1 = sndobj.SndThread()
> sndin = sndobj.SndIn(af,1)
> outp = sndobj.SndCoreAudio()
> aif1 = sndobj.SndIn(af,1)
> #aif1 = sndobj.SndIn(af,1,vs,sr)
> #aif1.SetSr(sr)
> aif2 = sndobj.SndIn(af,2)
> #aif2 = sndobj.SndIn(af,2, vs, sr)
> #aif2.SetSr(sr)
> outp.SetOutput(1,aif1)
> outp.SetOutput(2,aif2)
> T1.AddObj(af,sndobj.SNDIO_IN)
> T1.AddObj(aif1)
> T1.AddObj(aif2)
> T1.AddObj(outp,sndobj.SNDIO_OUT)
> T1.ProcOn()
> time.sleep(5)
> T1.ProcOff()
>
> TIA
> Ed
>
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