If set to raw, this indicates that the input file does not have a header. While this can be used to specify file types other than raw, this is rarely used for other purposes as the file type of all the existing supported types can be determined automatically from the file's header.
Waveforms can have multiple channels.
This option extracts a single channel for progcessing and discards the rest. This is used to specify the positions of the analysis frames for pitch synchronous analysis. Pitchmark files are just standard track files, but the channel information is ignored and only the time positions are used -coefs string list of basic types of processing required. Basic processing does not need to be specfied for this option to work. Basic processing does not need to be specfied for this option to work.