[SoX-users] Question about sinc

[Francois A. <fra...@un...>]

Dear Sox users,
I am trying to use the sinc command proposed by SoX (v14.3.0). I have 
problems when
using passband and notch filters. I tried to write command lines with 
my understanding
of the manpages, but I must make a mistake somewhere. Here is what I tried :
sox -V4 succession.mp3 filtered1.mp3 sinc 3500 -4000
sox -V4 succession.mp3 filtered2.mp3 sinc 4000 -3500
sox -V4 --plot gnuplot succession.mp3 -n sinc -4000 3500 > partiel2010bp.plt
sox -V4 --plot gnuplot succession.mp3 -n sinc -3500 4000 > partiel2010notch.plt
And below are the resulting error messages:

D:\SoxWorld>sox -V4 succession.mp3 filtered1.mp3 sinc 3500 -4000
sox: SoX v14.3.0
time:  Jun 16 2009 22:23:46
uname: CYGWIN_NT-5.1 FRANCOIS 1.5.25(0.156/4/2) 2008-06-12 19:34 i686
gcc:   4.3.2 20080827 (beta) 2
arch:  1248 48 44 L OMP
sox DBUG mp3-duration: got approx. duration by CBR extrapolation
sox FAIL sinc: usage: [-a att|-b beta] [-p phase|-M|-I|-L] [-t tbw|-n 
taps] [freqHP][-freqLP [-t tbw|-n taps]]

D:\SoxWorld>sox -V4 succession.mp3 filtered2.mp3 sinc 4000 -3500
sox: SoX v14.3.0
time:  Jun 16 2009 22:23:46
uname: CYGWIN_NT-5.1 FRANCOIS 1.5.25(0.156/4/2) 2008-06-12 19:34 i686
gcc:   4.3.2 20080827 (beta) 2
arch:  1248 48 44 L OMP
sox DBUG mp3-duration: got approx. duration by CBR extrapolation
sox FAIL sinc: usage: [-a att|-b beta] [-p phase|-M|-I|-L] [-t tbw|-n 
taps] [freqHP][-freqLP [-t tbw|-n taps]]

D:\SoxWorld>sox -V4 --plot gnuplot succession.mp3 -n sinc -4000 
3500  1>partiel2010bp.plt
sox: SoX v14.3.0
time:  Jun 16 2009 22:23:46
uname: CYGWIN_NT-5.1 FRANCOIS 1.5.25(0.156/4/2) 2008-06-12 19:34 i686
gcc:   4.3.2 20080827 (beta) 2
arch:  1248 48 44 L OMP
sox DBUG mp3-duration: got approx. duration by CBR extrapolation
sox FAIL sinc: usage: [-a att|-b beta] [-p phase|-M|-I|-L] [-t tbw|-n 
taps] [freqHP][-freqLP [-t tbw|-n taps]]

D:\SoxWorld>sox -V4 --plot gnuplot succession.mp3 -n sinc -3500 
4000  1>partiel2010notch.plt
sox: SoX v14.3.0
time:  Jun 16 2009 22:23:46
uname: CYGWIN_NT-5.1 FRANCOIS 1.5.25(0.156/4/2) 2008-06-12 19:34 i686
gcc:   4.3.2 20080827 (beta) 2
arch:  1248 48 44 L OMP
sox DBUG mp3-duration: got approx. duration by CBR extrapolation
sox FAIL sinc: usage: [-a att|-b beta] [-p phase|-M|-I|-L] [-t tbw|-n 
taps] [freqHP][-freqLP [-t tbw|-n taps]]

Does anyone understand what is my mistake ? Why is there a 1 just before
the ">" when I generate a gnuplot file ?

Thank you in advance for your reply,
Best regards,


Francois Auger,  http://www.univ-nantes.fr/auger-f

Departement Mesures Physiques de l'IUT de Saint-Nazaire, bureau 2108
tel : 02 40 17 81 20, internet : http://www.univ-nantes.fr/iutsn/mp

Laboratoire Ireena, Crtt, bureau 272
tel : 02 40 17 26 35, internet : http://www.polytech.univ-nantes.fr/ireena

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