wave-read-objects.html

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<H2>
<BR>
14.5.1 Wave_read Objects 
</H2>

<P>
Wave_read objects, as returned by <tt class="function">open()</tt>, have the
following methods:

<P>
<dl><dt><b><a name='l2h-2882'><tt class='method'>close</tt></a></b> ()
<dd>
Close the stream, and make the instance unusable. This is
called automatically on object collection.
</dl>

<P>
<dl><dt><b><a name='l2h-2883'><tt class='method'>getnchannels</tt></a></b> ()
<dd>
Returns number of audio channels (<code>1</code> for mono, <code>2</code> for
stereo).
</dl>

<P>
<dl><dt><b><a name='l2h-2884'><tt class='method'>getsampwidth</tt></a></b> ()
<dd>
Returns sample width in bytes.
</dl>

<P>
<dl><dt><b><a name='l2h-2885'><tt class='method'>getframerate</tt></a></b> ()
<dd>
Returns sampling frequency.
</dl>

<P>
<dl><dt><b><a name='l2h-2886'><tt class='method'>getnframes</tt></a></b> ()
<dd>
Returns number of audio frames.
</dl>

<P>
<dl><dt><b><a name='l2h-2887'><tt class='method'>getcomptype</tt></a></b> ()
<dd>
Returns compression type (<code>'NONE'</code> is the only supported type).
</dl>

<P>
<dl><dt><b><a name='l2h-2888'><tt class='method'>getcompname</tt></a></b> ()
<dd>
Human-readable version of <tt class="method">getcomptype()</tt>.
Usually <code>'not compressed'</code> parallels <code>'NONE'</code>.
</dl>

<P>
<dl><dt><b><a name='l2h-2889'><tt class='method'>getparams</tt></a></b> ()
<dd>
Returns a tuple
<code>(<var>nchannels</var>, <var>sampwidth</var>, <var>framerate</var>,
<var>nframes</var>, <var>comptype</var>, <var>compname</var>)</code>, equivalent to output
of the <tt class="method">get*()</tt> methods.
</dl>

<P>
<dl><dt><b><a name='l2h-2890'><tt class='method'>readframes</tt></a></b> (<var>n</var>)
<dd>
Reads and returns at most <var>n</var> frames of audio, as a string of bytes.
</dl>

<P>
<dl><dt><b><a name='l2h-2891'><tt class='method'>rewind</tt></a></b> ()
<dd>
Rewind the file pointer to the beginning of the audio stream.
</dl>

<P>
The following two methods are defined for compatibility with the
<tt class='module'><a href="module-aifc.html" tppabs="http://www.python.org/doc/current/lib/module-aifc.html">aifc</a></tt> module, and don't do anything interesting.

<P>
<dl><dt><b><a name='l2h-2892'><tt class='method'>getmarkers</tt></a></b> ()
<dd>
Returns <code>None</code>.
</dl>

<P>
<dl><dt><b><a name='l2h-2893'><tt class='method'>getmark</tt></a></b> (<var>id</var>)
<dd>
Raise an error.
</dl>

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

<P>
<dl><dt><b><a name='l2h-2894'><tt class='method'>setpos</tt></a></b> (<var>pos</var>)
<dd>
Set the file pointer to the specified position.
</dl>

<P>
<dl><dt><b><a name='l2h-2895'><tt class='method'>tell</tt></a></b> ()
<dd>
Return current file pointer position.
</dl>

<P>

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