ref: 3f512b84f0c94b21f18d5b3e70019d8691823004
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