mirror of
https://github.com/romanz/amodem.git
synced 2026-02-07 09:28:02 +08:00
23 lines
483 B
Python
23 lines
483 B
Python
import pylab
|
|
|
|
def spectrogram(t, x, Fs, NFFT=256):
|
|
ax1 = pylab.subplot(211)
|
|
pylab.plot(t, x)
|
|
|
|
pylab.subplot(212, sharex=ax1)
|
|
Pxx, freqs, bins, im = pylab.specgram(x,
|
|
NFFT=NFFT, Fs=Fs, noverlap=NFFT/2, cmap=pylab.cm.gist_heat)
|
|
|
|
if __name__ == '__main__':
|
|
import sys
|
|
import common
|
|
|
|
for fname in sys.argv[1:]:
|
|
t, x = common.load(fname)
|
|
pylab.figure()
|
|
pylab.title(fname)
|
|
spectrogram(t, x, common.Fs)
|
|
|
|
pylab.show()
|
|
|