Corrected docstrings of audio modules. writeframes() accepts bytes, not str.
diff --git a/Lib/aifc.py b/Lib/aifc.py
index 0b4f85a..7ebdbeb 100644
--- a/Lib/aifc.py
+++ b/Lib/aifc.py
@@ -121,7 +121,7 @@
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
-When all frames have been written, either call writeframes('') or
+When all frames have been written, either call writeframes(b'') or
close() to patch up the sizes in the header.
Marks can be added anytime. If there are any marks, you must call
close() after all frames have been written.
diff --git a/Lib/sunau.py b/Lib/sunau.py
index e760093..0473e9e 100644
--- a/Lib/sunau.py
+++ b/Lib/sunau.py
@@ -97,7 +97,7 @@
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
-When all frames have been written, either call writeframes('') or
+When all frames have been written, either call writeframes(b'') or
close() to patch up the sizes in the header.
The close() method is called automatically when the class instance
is destroyed.
diff --git a/Lib/wave.py b/Lib/wave.py
index 8fba70f..8a101e3 100644
--- a/Lib/wave.py
+++ b/Lib/wave.py
@@ -65,7 +65,7 @@
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
-When all frames have been written, either call writeframes('') or
+When all frames have been written, either call writeframes(b'') or
close() to patch up the sizes in the header.
The close() method is called automatically when the class instance
is destroyed.