##
14.5.1 Wave_read Objects

Wave_read objects, as returned by `open()`, have the following methods:

`close` ()
  Close the stream, and make the instance unusable. This is called automatically on object collection.

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

`getsampwidth` ()
  Returns sample width in bytes.

`getframerate` ()
  Returns sampling frequency.

`getnframes` ()
  Returns number of audio frames.

`getcomptype` ()
  Returns compression type (`'NONE'` is the only supported type).

`getcompname` ()
  Human-readable version of `getcomptype()`. Usually `'not compressed'` parallels `'NONE'`.

`getparams` ()
  Returns a tuple `(nchannels, sampwidth, framerate, nframes, comptype, compname)`, equivalent to output of the `get*()` methods.

`readframes` (n)
  Reads and returns at most n frames of audio, as a string of bytes.

`rewind` ()
  Rewind the file pointer to the beginning of the audio stream.

The following two methods are defined for compatibility with the `aifc` module, and don't do anything interesting.

`getmarkers` ()
  Returns `None`.

`getmark` (id)
  Raise an error.

The following two methods define a term ``position'' which is compatible between them, and is otherwise implementation dependant.

`setpos` (pos)
  Set the file pointer to the specified position.

`tell` ()
  Return current file pointer position.