WAV file format is a file format for storing digital audio (waveform) data. It supports a variety of bit resolutions, sample rates, and channels of audio. this format is very popular upon ibm pc (clone) platforms, and is widely used in professional programs that process digital audio waveforms. it takes into account some pecularities of the intel cpu such as little endian byte order. this format uses microsoft's version of the electronic arts interchange file format method for storing data in "chunks".
All applications that use wave must be able to read the 2 required chunks and can choose to selectively ignore the optional chunks. a program that copies a wave should copy all of the chunks in the wave, even those it chooses not to interpret.
There are no restrictions upon the order of the chunks within a wave file, with the exception that the format chunk must precede the data chunk. some inflexibly written programs expect the format chunk as the first chunk (after the riff header) although they shouldn't because the specification doesn't require this.