Hmmm.. I have no success until now :(
Using play -e raw -b 32 -c 1 -r 441000 --endian little dat.raw
I am facing with the following error:
play FAIL sox: --encoding: `raw' is not one of: signed-integer,
unsigned-integer, floating-point, ms-adpcm, ima-adpcm, oki-adpcm,
gsm-full-rate, u-law, mu-law, a-law.
That's strange. I am sure the data are in little-endian format (since the
storage CPU is Intel), each sample is 32-bit long integer, I have 32768
samples but have no idea about the real sampling rate.
I can try with several speeds, but the question about the "encoding" still
unclear for me. And this is the same using sox instead.
So, I am stuck here
2010/12/11 Rob <lau@email-addr-hidden>
> On Saturday 11 December 2010 04:42, ciclo esano wrote:
> > Moreover the information about bit rate, channel and everything
> > concerning audio file is very difficult to apply here, since the raw
> > data are coming from a digitizer after several downsampling processes
> > to have all the signals in the audio range (in fact they arise from the
> > high frequency of nuclear spins, hundreds of MHz)
>
> Oh, that sounds brilliant. Well, if they're being downsampled already,
> surely you know what frequency to choose, but if not, you could just start
> with the common ones (22050, 32000, 44100, 48000), see how they sound and
> tweak as needed. I'd assume it'd be one channel and 32-bit samples based
> on what you said, but you can experiment with that too.
>
> Rob
>
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Received on Sat Dec 11 20:15:05 2010
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