1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
#! /usr/bin/env python
import sys
from aubio import source, sink, pvoc, tss
if __name__ == '__main__':
if len(sys.argv) < 2:
print('usage: %s <inputfile> <outputfile_transient> <outputfile_steady>' % sys.argv[0])
sys.exit(1)
samplerate = 44100
win_s = 1024 # fft size
hop_s = win_s // 4 # block size
threshold = 0.5
f = source(sys.argv[1], samplerate, hop_s)
g = sink(sys.argv[2], samplerate)
h = sink(sys.argv[3], samplerate)
pva = pvoc(win_s, hop_s) # a phase vocoder
pvb = pvoc(win_s, hop_s) # another phase vocoder
t = tss(win_s, hop_s) # transient steady state separation
t.set_threshold(threshold)
read = hop_s
while read:
samples, read = f() # read file
spec = pva(samples) # compute spectrum
trans_spec, stead_spec = t(spec) # transient steady-state separation
transients = pva.rdo(trans_spec) # overlap-add synthesis of transients
steadstate = pvb.rdo(stead_spec) # overlap-add synthesis of steady states
g(transients, read) # write transients to output
h(steadstate, read) # write steady states to output
del f, g, h # finish writing the files now
from demo_spectrogram import get_spectrogram
from pylab import subplot, show
subplot(311)
get_spectrogram(sys.argv[1])
subplot(312)
get_spectrogram(sys.argv[2])
subplot(313)
get_spectrogram(sys.argv[3])
show()
|
