Reader.of_wav_file
Create a reader object from a wav file.
method channels : int
Number of channels.
method sample_rate : int
Sample rate in samples per second.
method length : int
Length in samples.
method duration : float
Duration in seconds.
method seek : int -> unit
Seek to a given sample.
method close : unit
Close the file. This method should only be called once. The members of the object should not be accessed anymore after this method has been called.
method read : buffer -> int -> int -> int