def test_rms(self): audio = audiodata.io.open(sample_1) cidx = audio.extract_channel(0) channel = audio.get_channel(cidx) chanvol = ChannelVolume(channel) audiovol = AudioVolume(audio) self.assertEqual(chanvol.volume(), channel.rms()) self.assertEqual(audiovol.volume(), audio.rms()) self.assertEqual(chanvol.len(), int(channel.get_duration()/0.01) + 1) self.assertEqual(chanvol.min(), audiovol.min()) self.assertEqual(chanvol.max(), audiovol.max()) self.assertEqual(int(chanvol.mean()), int(audiovol.mean())) self.assertEqual(int(chanvol.variance()), int(audiovol.variance())) self.assertEqual(int(chanvol.stdev()), int(audiovol.stdev()))
print "Sample width (bits): ", audio.get_sampwidth()*8 nc = audio.get_nchannels() print "Number of channels: ", nc if nc == 1: print "Clipping rate (in %):" for i in range(2,9,2): f = float(i)/10. c = audio.clipping_rate( f ) * 100. print " - factor=%.1f: %.3f"%(f,c) audiovol = AudioVolume(audio, args.f) print "Volume:" print " - min: ", audiovol.min() print " - max: ", audiovol.max() print " - mean: ", round(audiovol.mean(),2) print " - median: ", round(audiovol.median(),2) print " - stdev: ", round(audiovol.stdev(),2) print " - coefvariation: ", round(audiovol.coefvariation(),2) else: for n in range(nc): print "Channel %d:"%(n) cidx = audio.extract_channel(n) channel = audio.get_channel(cidx) # Values related to amplitude frames = channel.get_frames(channel.get_nframes()) ca = AudioFrames(frames, channel.get_sampwidth(), 1) for i in range(2,9,2):