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

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

Try

outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp ,256,
22050.0)

There is no sndobj.SND_OUTPUT argument for
SndCoreAudio (it always opens full-duplex).

Victor


>
> Thanks for the pointer to the solution however
>
> now I've removed the constructor
>
> outp = sndobj.SndCoreAudio()
>
> and after  constructing aif1,aif2 replaced it with
>
> objs[0]=aif1
> objs[1]=aif2
> objsp = objs.cast()
> outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp)
> which as expected still produces output at the wrong
> sampling rate however if I extend this to
> outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp ,
> sndobj.SND_OUTPUT, 256, 22050)
> or
> outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp , 1)
> or variants in between I get tracebacks similar to this
>
> File "aif.py", line 20, in <module>
>     outp = sndobj.SndCoreAudio(2, 512, 4, 32767.0, objsp,
> 1) #, 256, 22050) #wrong args number
>   File "/Users/edh/Contracts/StAndrews_1/sndobj/sndobj.py"
> , line 2803, in __init__
>     this = _sndobj.new_SndCoreAudio(*args)
> NotImplementedError: Wrong number of arguments for
> overloaded function 'new_SndCoreAudio'.
>   Possible C/C++ prototypes are:
>     SndCoreAudio(int,int,int,float,SndObj **,UInt32,int
> ,float)
>     SndCoreAudio(int,int,int,float,SndObj **,UInt32,int)
>     SndCoreAudio(int,int,int,float,SndObj **,UInt32)
>     SndCoreAudio(int,int,int,float,SndObj **)
>     SndCoreAudio(int,int,int,float)
>     SndCoreAudio(int,int,int)
>     SndCoreAudio(int,int)
>     SndCoreAudio(int)
>     SndCoreAudio()
>
> Best
>  Ed
>
> On 8/9/07, Victor Lazzarini <vic...@nu...>
> > wrote: 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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