ref: fa2ab259fa540c487eeb7f032073d5b00abe6fb1
dir: /python/demos/demo_notes.py/
#! /usr/bin/env python
import sys
from aubio import source, notes
if len(sys.argv) < 2:
print("Usage: %s <filename> [samplerate]" % sys.argv[0])
sys.exit(1)
filename = sys.argv[1]
downsample = 1
samplerate = 44100 // downsample
if len( sys.argv ) > 2: samplerate = int(sys.argv[2])
win_s = 512 // downsample # fft size
hop_s = 256 // downsample # hop size
s = source(filename, samplerate, hop_s)
samplerate = s.samplerate
tolerance = 0.8
notes_o = notes("default", win_s, hop_s, samplerate)
print("%8s" % "time","[ start","vel","last ]")
# total number of frames read
total_frames = 0
while True:
samples, read = s()
new_note = notes_o(samples)
if (new_note[0] != 0):
note_str = ' '.join(["%.2f" % i for i in new_note])
print("%.6f" % (total_frames/float(samplerate)), new_note)
total_frames += read
if read < hop_s: break