ref: c470ad04d596eff648aa8e055d385cda0dcbcad7
parent: 883b49986190be86cd13e1dd242cf495d0707093
author: Paul Brossier <piem@piem.org>
date: Sat Dec 17 07:41:41 EST 2016
python/demos/demo_notes.py: add simple notes demos
--- /dev/null
+++ b/python/demos/demo_notes.py
@@ -1,0 +1,37 @@
+#! /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