Changeset dedeffc for python

Timestamp:

Nov 20, 2013, 2:50:37 AM (11 years ago)

Author:

Paul Brossier <piem@piem.org>

Branches:

feature/autosink, feature/cnn, feature/cnn_org, feature/constantq, feature/crepe, feature/crepe_org, feature/pitchshift, feature/pydocstrings, feature/timestretch, fix/ffmpeg5, master, pitchshift, sampler, timestretch, yinfft+

Children:

aad688e

Parents:

1e1a2c9

Message:

python/demos/demo_sink_create_woodblock.py: fix wavetable

File:

• python/demos/demo_sink_create_woodblock.py (modified) (2 diffs)

python/demos/demo_sink_create_woodblock.py

@@ -33 +33 @@
 for i in range(duration):
     x = int((i % period) / float(period) * tablelen)
-    sinetone[i] = (sinetable[x] + sinetable[x+1]) / 2
+    idx = int(x)
+    frac = x - idx
+    a = sinetable[idx]
+    b = sinetable[idx + 1]
+    sinetone[i] = a + frac * (b -a)
 
 # apply some envelope
@@ -40 +44 @@
 sinetone[:attack] *= exp( e * ( float_ramp[:attack] / attack - 1 ) )
 
-if 0:
+if 1:
     import matplotlib.pyplot as plt
     plt.plot(sinetone)