ref: e693b6c4c3158c9f8d0f944d01bc70fb31d455b1
parent: 7af7c32abe46b9795dbad93ae25dba71a1041351
author: Paul Brossier <[email protected]>
date: Fri Jul 27 07:32:09 EDT 2012
demo_simple_robot_voice.py: added simple phase zeroing demo
--- /dev/null
+++ b/interfaces/python/demo_simple_robot_voice.py
@@ -1,0 +1,29 @@
+#! /usr/bin/python
+
+import sys
+from aubio import source, sink, pvoc
+
+if __name__ == '__main__':
+ if len(sys.argv) < 2:
+ print 'usage: %s <inputfile> <outputfile>' % sys.argv[0]
+ sys.exit(1)
+ samplerate = 44100
+ f = source(sys.argv[1], samplerate, 256)
+ g = sink(sys.argv[2], samplerate)
+ total_frames, read = 0, 256
+
+ win_s = 512 # fft size
+ hop_s = win_s / 2 # hop size
+ pv = pvoc(win_s, hop_s) # phase vocoder
+
+ while read:
+ samples, read = f()
+ spectrum = pv(samples) # compute spectrum
+ spectrum.phas[:] = 0. # zero phase
+ new_samples = pv.rdo(spectrum) # compute modified samples
+ g(new_samples, read) # write to output
+ total_frames += read
+
+ print "wrote", total_frames, "from", f.uri, "to", g.uri
+
+