ref: 1eee4053a684d440a181d20022ab1c69e0ada024
dir: /python/demos/demo_pitch.py/
#! /usr/bin/env python
import sys
from aubio import source, pitch
win_s = 1024 # fft size
hop_s = win_s # hop size
if len(sys.argv) < 2:
print "Usage: %s <filename> [samplerate]" % sys.argv[0]
sys.exit(1)
filename = sys.argv[1]
samplerate = 0
if len( sys.argv ) > 2: samplerate = int(sys.argv[2])
s = source(filename, samplerate, hop_s)
samplerate = s.samplerate
pitch_o = pitch("default", win_s, hop_s, samplerate)
pitch_o.set_unit("midi")
pitches = []
# total number of frames read
total_frames = 0
while True:
samples, read = s()
pitch = pitch_o(samples)[0]
print "%f %f" % (total_frames / float(samplerate), pitch)
#pitches += [pitches]
total_frames += read
if read < hop_s: break
#print pitches