Wave_read.getnchannels() Returns number of audio channels (1 for mono, 2 for stereo).

Wave_write.writeframesraw(data) Write audio frames, without correcting nframes.

audioop.alaw2lin(fragment, width) Convert sound fragments in a-LAW encoding to linearly encoded sound fragments. a-LAW encoding

aifc.getmark(id) Return the tuple as described in getmarkers() for the mark with the given id.

read(size=-1) Read at most size bytes from the chunk (less if the read hits the end of the chunk before obtaining size

oss_audio_device.read(size) Read size bytes from the audio input and return them as a Python string. Unlike most Unix

audioop.ulaw2lin(fragment, width) Convert sound fragments in u-LAW encoding to linearly encoded sound fragments. u-LAW encoding

audioop.minmax(fragment, width) Return a tuple consisting of the minimum and maximum values of all samples in the sound fragment

imghdr.what(filename, h=None) Tests the image data contained in the file named by filename, and returns a string describing

isatty() Returns False.