Thanks a lot benjameim,
I want to believe that the freq power is in Db. but ok.
But these frequencies, is not the exact value right ?
There is something in the docs, talk about a range of frequencies,
depending of the octaves.
Do you know how I calculate that! The frequencie range (band)
from x to Y
for instance...
190.283203125;0.244085595012 MEANS freqs from x up to 190.283 with
power 0.24408 ????
how to calculate X or the up and low limit of this band?
Thanks again
On Oct 30, 2007 12:32 PM, Benjamin Bruheim <[EMAIL PROTECTED]> wrote:
> Hi,
>
> The tuples are [(right-frequency, right-power), ..., (left-frequency,
> left-power), ...]. The frequency is in Hz, but I am not sure what unit
> power is in.
>
>
> On 10/30/07, Carlos Leite <[EMAIL PROTECTED]> wrote:
> > Hi there,
> > please I tried other lists, and nothing. I just need to know how to
> > interpret the tuples that the asBands method return to me.
> >
> > A cant understand what the asBands() really gave to me.
> > The Docs, say that asBands() return a List of tupples grouped by
> > frequency, and the first two values are frequency limits. But I cant
> > see the frequency limits, not even the frequencies .
> >
> > IF anyone, has any information about it, even to say "its not working".
> > hehe
> >
> > THis is part of my output to an audio file of 2 seconds and a 1000Hz
> > frequency
> > And the code is below
> > But I read a lot, search .. and I still cant understand what this
> > tuples really means.
> >
> > Thanks in advance
> >
> > 190.283203125;0.244085595012
> > 211.42578125;1.08019864559
> > 253.7109375;3.9267279307
> > 317.138671875;9.92583847046
> > 359.423828125;30.9667332967
> > 422.8515625;2023.64868164
> > 507.421875;1721.98303223
> > 591.9921875;45.5271911621
> > 697.705078125;6.53225898743
> > 824.560546875;2.08980056218
> > 972.55859375;0.794676959515
> > 1141.69921875;0.362428373761
> > 1331.98242188;0.29334748875
> > 1564.55078125;0.218693238038
> > 1839.40429688;0.278315830231
> > 2156.54296875;0.146333972613
> > 2537.109375;0.26632910683
> > 2981.10351563;0.496793937683
> > 3509.66796875;0.742335747028
> > 4122.80273438;0.619799894445
> > 4841.65039063;0.941718482971
> > 5687.35351563;0.703689981014
> > 6681.0546875;1.38942857222
> > 7843.89648438;1.78449742244
> > 9218.1640625;3.77672335976
> > 190.283203125;0.194098889828
> > 211.42578125;1.05994915962
> > 253.7109375;3.90520095825
> > 317.138671875;10.0715675354
> > 359.423828125;31.0263417562
> > 422.8515625;2023.83581543
> > 507.421875;1721.99328613
> > 591.9921875;45.4988830566
> > 697.705078125;6.51365725199
> > 824.560546875;2.10594912938
> > 972.55859375;0.806965708733
> > 1141.69921875;0.369390010834
> > 1331.98242188;0.381403446198
> > 1564.55078125;0.279652008644
> > 1839.40429688;0.307544994354
> > 2156.54296875;0.252535131243
> > 2537.109375;0.34709642047
> > 2981.10351563;0.604796524048
> > 3509.66796875;0.553077500442
> > 4122.80273438;1.07670492284
> > 4841.65039063;1.21294984818
> > 5687.35351563;1.33566446507
> > 6681.0546875;1.47083462802
> > 7843.89648438;2.5437119704
> > 9218.1640625;4.14210630718
> > import pymedia.audio.sound as sound
> > import pymedia.audio.acodec as acodec
> > import sys
> >
> > freqs=''
> > def playFile(file_name):
> > #Leitura do arquivo
> > file_extension = file_name.split('.' )[ -1 ].lower()
> > parms = {'id': acodec.getCodecID(file_extension), 'ext': file_extension}
> > decoder = acodec.Decoder(parms)
> > f = open(file_name, 'rb')
> > s = f.read(8192)
> > r = decoder.decode(s)
> > sampleFreqs= []
> > #snd = sound.Output(r.sample_rate, r.channels, sound.AFMT_S16_LE)
> > SAMPLES= 500
> > NUM_FREQS= 12
> > BANDS= 25
> > resampler= sound.Resampler( (r.sample_rate,r.channels),
> > (r.sample_rate,1) )
> > analyzer= sound.SpectrAnalyzer( 1, SAMPLES, 512 )
> > arqb = open('saida_bands.txt' , 'w')
> > arqf = open('saida_freqs.txt', 'w')
> > arqb.write('%s \n' %(f.name))
> > contador = 0
> > while len(s)> 0:
> > contador = contador + 1
> > if r:
> > #snd.play(r.data)
> > s = f.read(512)
> > r = decoder.decode(s)
> >
> > snd= sound.Output( r.sample_rate, r.channels, sound.AFMT_S16_LE )
> > s1= resampler.resample( r.data )
> > bTmp= analyzer.asBands( BANDS, s1 )
> > sampleFreqs.append( ( snd.getPosition()+ snd.getLeft(), bTmp ) )
> > fTmp= analyzer.asFrequencies(r.data)
> > #print (bTmp )
> > for k in bTmp:
> > for l in k:
> > #print l
> > arqb.write('%s;%s \n' % (l[0].__str__(),l[1].__str__(),))
> >
> > arqb.write('Frame: %s \n' % (contador.__str__()))
> > arqf.write ('Leitura: %s \n ' % (contador.__str__()))
> > arqf.write ('Freq: %s \n ' % (fTmp.__str__()))
> > arqb.write('LOOPS: %s \n' % (contador.__str__()))
> > arqb.close()
> > arqf.close()
> > if __name__ == "__main__":
> > file_name = sys.argv[1]
> > playFile(file_name)
> >
> > --
> > Carlos Leite
> >
> > -------------------------------------------------------------------------
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> >
>
--
Carlos Leite
www.znc.com.br
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