Fix copy-paste error in example.
diff --git a/Doc/library/audioop.rst b/Doc/library/audioop.rst
index d50a970..198c11a 100644
--- a/Doc/library/audioop.rst
+++ b/Doc/library/audioop.rst
@@ -230,8 +230,8 @@
def mul_stereo(sample, width, lfactor, rfactor):
lsample = audioop.tomono(sample, width, 1, 0)
rsample = audioop.tomono(sample, width, 0, 1)
- lsample = audioop.mul(sample, width, lfactor)
- rsample = audioop.mul(sample, width, rfactor)
+ lsample = audioop.mul(lsample, width, lfactor)
+ rsample = audioop.mul(rsample, width, rfactor)
lsample = audioop.tostereo(lsample, width, 1, 0)
rsample = audioop.tostereo(rsample, width, 0, 1)
return audioop.add(lsample, rsample, width)