mirror of
https://github.com/romanz/amodem.git
synced 2026-02-06 00:36:20 +08:00
27 lines
598 B
Python
Executable File
27 lines
598 B
Python
Executable File
#!/usr/bin/env python
|
|
import pylab
|
|
import numpy as np
|
|
|
|
|
|
def spectrogram(t, x, Fs, NFFT=256):
|
|
ax1 = pylab.subplot(211)
|
|
pylab.plot(t, x)
|
|
|
|
pylab.subplot(212, sharex=ax1)
|
|
pylab.specgram(x, NFFT=NFFT, Fs=Fs, noverlap=NFFT/2,
|
|
cmap=pylab.cm.gist_heat)
|
|
|
|
if __name__ == '__main__':
|
|
import sys
|
|
from amodem import common
|
|
from amodem.config import Fs, Ts
|
|
|
|
for fname in sys.argv[1:]:
|
|
x = common.load(open(fname, 'rb'))
|
|
t = np.arange(len(x)) * Ts
|
|
pylab.figure()
|
|
pylab.title(fname)
|
|
spectrogram(t, x, Fs)
|
|
|
|
pylab.show()
|