Wave_write.setcomptype(type, name) Set the compression type and description. At the moment, only compression type NONE

isatty() Returns False.

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

oss_audio_device.channels(nchannels) Set the number of output channels to nchannels. A value of 1 indicates monophonic

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

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

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

aifc.getcomptype() Return a bytes array of length 4 describing the type of compression used in the audio file. For AIFF files

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

Wave_read.getsampwidth() Returns sample width in bytes.