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-rw-r--r--Doc/library/wave.rst3
1 files changed, 2 insertions, 1 deletions
diff --git a/Doc/library/wave.rst b/Doc/library/wave.rst
index f63e0d3..d50aabd 100644
--- a/Doc/library/wave.rst
+++ b/Doc/library/wave.rst
@@ -12,7 +12,8 @@
--------------
The :mod:`wave` module provides a convenient interface to the WAV sound format.
-It does not support compression/decompression, but it does support mono/stereo.
+Only files using ``WAVE_FORMAT_PCM`` are supported. Note that this does not
+include files using ``WAVE_FORMAT_EXTENSIBLE`` even if the subformat is PCM.
The :mod:`wave` module defines the following function and exception: