demos/demo_spectrogram.py: add samplerate option to spectrogram

Paul Brossier committed 13 years ago

Commit 9f8e8a91 parent d5e846c1 file · +2 −2Browse files

Showing the changes to python (1 of 1 file). Show all

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 from numpy import array, arange, zeros, shape, log10, vstack
 from pylab import imshow, show, cm, axis, ylabel, xlabel, xticks, yticks
-def get_spectrogram(filename):
+def get_spectrogram(filename, samplerate = 0):
-  samplerate = 44100
   win_s = 512                                        # fft window size
   hop_s = win_s / 2                                  # hop size
   fft_s = win_s / 2 + 1                              # spectrum bins
   a = source(filename, samplerate, hop_s)            # source file
+  if samplerate == 0: samplerate = a.samplerate
   pv = pvoc(win_s, hop_s)                            # phase vocoder
   specgram = zeros([0, fft_s], dtype='float32')      # numpy array to store spectrogram

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