<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8" /> <title>sunau — Read and write Sun AU files — Python 3.7.4 documentation</title> <link rel="stylesheet" href="../_static/pydoctheme.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/language_data.js"></script> <script type="text/javascript" src="../_static/sidebar.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python 3.7.4 documentation" href="../_static/opensearch.xml"/> <link rel="author" title="About these documents" href="../about.html" /> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="copyright" title="Copyright" href="../copyright.html" /> <link rel="next" title="wave — Read and write WAV files" href="wave.html" /> <link rel="prev" title="aifc — Read and write AIFF and AIFC files" href="aifc.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <link rel="canonical" href="https://docs.python.org/3/library/sunau.html" /> <script type="text/javascript" src="../_static/copybutton.js"></script> <script type="text/javascript" src="../_static/switchers.js"></script> <style> @media only screen { table.full-width-table { width: 100%; } } </style> </head><body> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="wave.html" title="wave — Read and write WAV files" accesskey="N">next</a> |</li> <li class="right" > <a href="aifc.html" title="aifc — Read and write AIFF and AIFC files" accesskey="P">previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="https://www.python.org/">Python</a> »</li> <li> <span class="language_switcher_placeholder">en</span> <span class="version_switcher_placeholder">3.7.4</span> <a href="../index.html">Documentation </a> » </li> <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li> <li class="nav-item nav-item-2"><a href="mm.html" accesskey="U">Multimedia Services</a> »</li> <li class="right"> <div class="inline-search" style="display: none" role="search"> <form class="inline-search" action="../search.html" method="get"> <input placeholder="Quick search" type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> <script type="text/javascript">$('.inline-search').show(0);</script> | </li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="module-sunau"> <span id="sunau-read-and-write-sun-au-files"></span><h1><a class="reference internal" href="#module-sunau" title="sunau: Provide an interface to the Sun AU sound format."><code class="xref py py-mod docutils literal notranslate"><span class="pre">sunau</span></code></a> — Read and write Sun AU files<a class="headerlink" href="#module-sunau" title="Permalink to this headline">¶</a></h1> <p><strong>Source code:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/3.7/Lib/sunau.py">Lib/sunau.py</a></p> <hr class="docutils" /> <p>The <a class="reference internal" href="#module-sunau" title="sunau: Provide an interface to the Sun AU sound format."><code class="xref py py-mod docutils literal notranslate"><span class="pre">sunau</span></code></a> module provides a convenient interface to the Sun AU sound format. Note that this module is interface-compatible with the modules <a class="reference internal" href="aifc.html#module-aifc" title="aifc: Read and write audio files in AIFF or AIFC format."><code class="xref py py-mod docutils literal notranslate"><span class="pre">aifc</span></code></a> and <a class="reference internal" href="wave.html#module-wave" title="wave: Provide an interface to the WAV sound format."><code class="xref py py-mod docutils literal notranslate"><span class="pre">wave</span></code></a>.</p> <p>An audio file consists of a header followed by the data. The fields of the header are:</p> <table class="docutils align-center"> <colgroup> <col style="width: 24%" /> <col style="width: 76%" /> </colgroup> <thead> <tr class="row-odd"><th class="head"><p>Field</p></th> <th class="head"><p>Contents</p></th> </tr> </thead> <tbody> <tr class="row-even"><td><p>magic word</p></td> <td><p>The four bytes <code class="docutils literal notranslate"><span class="pre">.snd</span></code>.</p></td> </tr> <tr class="row-odd"><td><p>header size</p></td> <td><p>Size of the header, including info, in bytes.</p></td> </tr> <tr class="row-even"><td><p>data size</p></td> <td><p>Physical size of the data, in bytes.</p></td> </tr> <tr class="row-odd"><td><p>encoding</p></td> <td><p>Indicates how the audio samples are encoded.</p></td> </tr> <tr class="row-even"><td><p>sample rate</p></td> <td><p>The sampling rate.</p></td> </tr> <tr class="row-odd"><td><p># of channels</p></td> <td><p>The number of channels in the samples.</p></td> </tr> <tr class="row-even"><td><p>info</p></td> <td><p>ASCII string giving a description of the audio file (padded with null bytes).</p></td> </tr> </tbody> </table> <p>Apart from the info field, all header fields are 4 bytes in size. They are all 32-bit unsigned integers encoded in big-endian byte order.</p> <p>The <a class="reference internal" href="#module-sunau" title="sunau: Provide an interface to the Sun AU sound format."><code class="xref py py-mod docutils literal notranslate"><span class="pre">sunau</span></code></a> module defines the following functions:</p> <dl class="function"> <dt id="sunau.open"> <code class="descclassname">sunau.</code><code class="descname">open</code><span class="sig-paren">(</span><em>file</em>, <em>mode</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.open" title="Permalink to this definition">¶</a></dt> <dd><p>If <em>file</em> is a string, open the file by that name, otherwise treat it as a seekable file-like object. <em>mode</em> can be any of</p> <dl class="simple"> <dt><code class="docutils literal notranslate"><span class="pre">'r'</span></code></dt><dd><p>Read only mode.</p> </dd> <dt><code class="docutils literal notranslate"><span class="pre">'w'</span></code></dt><dd><p>Write only mode.</p> </dd> </dl> <p>Note that it does not allow read/write files.</p> <p>A <em>mode</em> of <code class="docutils literal notranslate"><span class="pre">'r'</span></code> returns an <code class="xref py py-class docutils literal notranslate"><span class="pre">AU_read</span></code> object, while a <em>mode</em> of <code class="docutils literal notranslate"><span class="pre">'w'</span></code> or <code class="docutils literal notranslate"><span class="pre">'wb'</span></code> returns an <code class="xref py py-class docutils literal notranslate"><span class="pre">AU_write</span></code> object.</p> </dd></dl> <dl class="function"> <dt id="sunau.openfp"> <code class="descclassname">sunau.</code><code class="descname">openfp</code><span class="sig-paren">(</span><em>file</em>, <em>mode</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.openfp" title="Permalink to this definition">¶</a></dt> <dd><p>A synonym for <a class="reference internal" href="#sunau.open" title="sunau.open"><code class="xref py py-func docutils literal notranslate"><span class="pre">open()</span></code></a>, maintained for backwards compatibility.</p> <div class="deprecated"> <p><span class="versionmodified">Deprecated since version 3.7, will be removed in version 3.9.</span></p> </div> </dd></dl> <p>The <a class="reference internal" href="#module-sunau" title="sunau: Provide an interface to the Sun AU sound format."><code class="xref py py-mod docutils literal notranslate"><span class="pre">sunau</span></code></a> module defines the following exception:</p> <dl class="exception"> <dt id="sunau.Error"> <em class="property">exception </em><code class="descclassname">sunau.</code><code class="descname">Error</code><a class="headerlink" href="#sunau.Error" title="Permalink to this definition">¶</a></dt> <dd><p>An error raised when something is impossible because of Sun AU specs or implementation deficiency.</p> </dd></dl> <p>The <a class="reference internal" href="#module-sunau" title="sunau: Provide an interface to the Sun AU sound format."><code class="xref py py-mod docutils literal notranslate"><span class="pre">sunau</span></code></a> module defines the following data items:</p> <dl class="data"> <dt id="sunau.AUDIO_FILE_MAGIC"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_MAGIC</code><a class="headerlink" href="#sunau.AUDIO_FILE_MAGIC" title="Permalink to this definition">¶</a></dt> <dd><p>An integer every valid Sun AU file begins with, stored in big-endian form. This is the string <code class="docutils literal notranslate"><span class="pre">.snd</span></code> interpreted as an integer.</p> </dd></dl> <dl class="data"> <dt id="sunau.AUDIO_FILE_ENCODING_MULAW_8"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_MULAW_8</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_MULAW_8" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_LINEAR_8"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_LINEAR_8</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_LINEAR_8" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_LINEAR_16"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_LINEAR_16</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_LINEAR_16" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_LINEAR_24"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_LINEAR_24</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_LINEAR_24" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_LINEAR_32"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_LINEAR_32</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_LINEAR_32" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_ALAW_8"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_ALAW_8</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_ALAW_8" title="Permalink to this definition">¶</a></dt> <dd><p>Values of the encoding field from the AU header which are supported by this module.</p> </dd></dl> <dl class="data"> <dt id="sunau.AUDIO_FILE_ENCODING_FLOAT"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_FLOAT</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_FLOAT" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_DOUBLE"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_DOUBLE</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_DOUBLE" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_ADPCM_G721"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_ADPCM_G721</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_ADPCM_G721" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_ADPCM_G722"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_ADPCM_G722</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_ADPCM_G722" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_ADPCM_G723_3"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_ADPCM_G723_3</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_ADPCM_G723_3" title="Permalink to this definition">¶</a></dt> <dt id="sunau.AUDIO_FILE_ENCODING_ADPCM_G723_5"> <code class="descclassname">sunau.</code><code class="descname">AUDIO_FILE_ENCODING_ADPCM_G723_5</code><a class="headerlink" href="#sunau.AUDIO_FILE_ENCODING_ADPCM_G723_5" title="Permalink to this definition">¶</a></dt> <dd><p>Additional known values of the encoding field from the AU header, but which are not supported by this module.</p> </dd></dl> <div class="section" id="au-read-objects"> <span id="id1"></span><h2>AU_read Objects<a class="headerlink" href="#au-read-objects" title="Permalink to this headline">¶</a></h2> <p>AU_read objects, as returned by <a class="reference internal" href="#sunau.open" title="sunau.open"><code class="xref py py-func docutils literal notranslate"><span class="pre">open()</span></code></a> above, have the following methods:</p> <dl class="method"> <dt id="sunau.AU_read.close"> <code class="descclassname">AU_read.</code><code class="descname">close</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.close" title="Permalink to this definition">¶</a></dt> <dd><p>Close the stream, and make the instance unusable. (This is called automatically on deletion.)</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.getnchannels"> <code class="descclassname">AU_read.</code><code class="descname">getnchannels</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.getnchannels" title="Permalink to this definition">¶</a></dt> <dd><p>Returns number of audio channels (1 for mono, 2 for stereo).</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.getsampwidth"> <code class="descclassname">AU_read.</code><code class="descname">getsampwidth</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.getsampwidth" title="Permalink to this definition">¶</a></dt> <dd><p>Returns sample width in bytes.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.getframerate"> <code class="descclassname">AU_read.</code><code class="descname">getframerate</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.getframerate" title="Permalink to this definition">¶</a></dt> <dd><p>Returns sampling frequency.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.getnframes"> <code class="descclassname">AU_read.</code><code class="descname">getnframes</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.getnframes" title="Permalink to this definition">¶</a></dt> <dd><p>Returns number of audio frames.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.getcomptype"> <code class="descclassname">AU_read.</code><code class="descname">getcomptype</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.getcomptype" title="Permalink to this definition">¶</a></dt> <dd><p>Returns compression type. Supported compression types are <code class="docutils literal notranslate"><span class="pre">'ULAW'</span></code>, <code class="docutils literal notranslate"><span class="pre">'ALAW'</span></code> and <code class="docutils literal notranslate"><span class="pre">'NONE'</span></code>.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.getcompname"> <code class="descclassname">AU_read.</code><code class="descname">getcompname</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.getcompname" title="Permalink to this definition">¶</a></dt> <dd><p>Human-readable version of <a class="reference internal" href="#sunau.AU_read.getcomptype" title="sunau.AU_read.getcomptype"><code class="xref py py-meth docutils literal notranslate"><span class="pre">getcomptype()</span></code></a>. The supported types have the respective names <code class="docutils literal notranslate"><span class="pre">'CCITT</span> <span class="pre">G.711</span> <span class="pre">u-law'</span></code>, <code class="docutils literal notranslate"><span class="pre">'CCITT</span> <span class="pre">G.711</span> <span class="pre">A-law'</span></code> and <code class="docutils literal notranslate"><span class="pre">'not</span> <span class="pre">compressed'</span></code>.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.getparams"> <code class="descclassname">AU_read.</code><code class="descname">getparams</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.getparams" title="Permalink to this definition">¶</a></dt> <dd><p>Returns a <a class="reference internal" href="collections.html#collections.namedtuple" title="collections.namedtuple"><code class="xref py py-func docutils literal notranslate"><span class="pre">namedtuple()</span></code></a> <code class="docutils literal notranslate"><span class="pre">(nchannels,</span> <span class="pre">sampwidth,</span> <span class="pre">framerate,</span> <span class="pre">nframes,</span> <span class="pre">comptype,</span> <span class="pre">compname)</span></code>, equivalent to output of the <code class="xref py py-meth docutils literal notranslate"><span class="pre">get*()</span></code> methods.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.readframes"> <code class="descclassname">AU_read.</code><code class="descname">readframes</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.readframes" title="Permalink to this definition">¶</a></dt> <dd><p>Reads and returns at most <em>n</em> frames of audio, as a <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> object. The data will be returned in linear format. If the original data is in u-LAW format, it will be converted.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.rewind"> <code class="descclassname">AU_read.</code><code class="descname">rewind</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.rewind" title="Permalink to this definition">¶</a></dt> <dd><p>Rewind the file pointer to the beginning of the audio stream.</p> </dd></dl> <p>The following two methods define a term “position” which is compatible between them, and is otherwise implementation dependent.</p> <dl class="method"> <dt id="sunau.AU_read.setpos"> <code class="descclassname">AU_read.</code><code class="descname">setpos</code><span class="sig-paren">(</span><em>pos</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.setpos" title="Permalink to this definition">¶</a></dt> <dd><p>Set the file pointer to the specified position. Only values returned from <a class="reference internal" href="#sunau.AU_read.tell" title="sunau.AU_read.tell"><code class="xref py py-meth docutils literal notranslate"><span class="pre">tell()</span></code></a> should be used for <em>pos</em>.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.tell"> <code class="descclassname">AU_read.</code><code class="descname">tell</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.tell" title="Permalink to this definition">¶</a></dt> <dd><p>Return current file pointer position. Note that the returned value has nothing to do with the actual position in the file.</p> </dd></dl> <p>The following two functions are defined for compatibility with the <a class="reference internal" href="aifc.html#module-aifc" title="aifc: Read and write audio files in AIFF or AIFC format."><code class="xref py py-mod docutils literal notranslate"><span class="pre">aifc</span></code></a>, and don’t do anything interesting.</p> <dl class="method"> <dt id="sunau.AU_read.getmarkers"> <code class="descclassname">AU_read.</code><code class="descname">getmarkers</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.getmarkers" title="Permalink to this definition">¶</a></dt> <dd><p>Returns <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_read.getmark"> <code class="descclassname">AU_read.</code><code class="descname">getmark</code><span class="sig-paren">(</span><em>id</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_read.getmark" title="Permalink to this definition">¶</a></dt> <dd><p>Raise an error.</p> </dd></dl> </div> <div class="section" id="au-write-objects"> <span id="id2"></span><h2>AU_write Objects<a class="headerlink" href="#au-write-objects" title="Permalink to this headline">¶</a></h2> <p>AU_write objects, as returned by <a class="reference internal" href="#sunau.open" title="sunau.open"><code class="xref py py-func docutils literal notranslate"><span class="pre">open()</span></code></a> above, have the following methods:</p> <dl class="method"> <dt id="sunau.AU_write.setnchannels"> <code class="descclassname">AU_write.</code><code class="descname">setnchannels</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.setnchannels" title="Permalink to this definition">¶</a></dt> <dd><p>Set the number of channels.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_write.setsampwidth"> <code class="descclassname">AU_write.</code><code class="descname">setsampwidth</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.setsampwidth" title="Permalink to this definition">¶</a></dt> <dd><p>Set the sample width (in bytes.)</p> <div class="versionchanged"> <p><span class="versionmodified changed">Changed in version 3.4: </span>Added support for 24-bit samples.</p> </div> </dd></dl> <dl class="method"> <dt id="sunau.AU_write.setframerate"> <code class="descclassname">AU_write.</code><code class="descname">setframerate</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.setframerate" title="Permalink to this definition">¶</a></dt> <dd><p>Set the frame rate.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_write.setnframes"> <code class="descclassname">AU_write.</code><code class="descname">setnframes</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.setnframes" title="Permalink to this definition">¶</a></dt> <dd><p>Set the number of frames. This can be later changed, when and if more frames are written.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_write.setcomptype"> <code class="descclassname">AU_write.</code><code class="descname">setcomptype</code><span class="sig-paren">(</span><em>type</em>, <em>name</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.setcomptype" title="Permalink to this definition">¶</a></dt> <dd><p>Set the compression type and description. Only <code class="docutils literal notranslate"><span class="pre">'NONE'</span></code> and <code class="docutils literal notranslate"><span class="pre">'ULAW'</span></code> are supported on output.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_write.setparams"> <code class="descclassname">AU_write.</code><code class="descname">setparams</code><span class="sig-paren">(</span><em>tuple</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.setparams" title="Permalink to this definition">¶</a></dt> <dd><p>The <em>tuple</em> should be <code class="docutils literal notranslate"><span class="pre">(nchannels,</span> <span class="pre">sampwidth,</span> <span class="pre">framerate,</span> <span class="pre">nframes,</span> <span class="pre">comptype,</span> <span class="pre">compname)</span></code>, with values valid for the <code class="xref py py-meth docutils literal notranslate"><span class="pre">set*()</span></code> methods. Set all parameters.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_write.tell"> <code class="descclassname">AU_write.</code><code class="descname">tell</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.tell" title="Permalink to this definition">¶</a></dt> <dd><p>Return current position in the file, with the same disclaimer for the <a class="reference internal" href="#sunau.AU_read.tell" title="sunau.AU_read.tell"><code class="xref py py-meth docutils literal notranslate"><span class="pre">AU_read.tell()</span></code></a> and <a class="reference internal" href="#sunau.AU_read.setpos" title="sunau.AU_read.setpos"><code class="xref py py-meth docutils literal notranslate"><span class="pre">AU_read.setpos()</span></code></a> methods.</p> </dd></dl> <dl class="method"> <dt id="sunau.AU_write.writeframesraw"> <code class="descclassname">AU_write.</code><code class="descname">writeframesraw</code><span class="sig-paren">(</span><em>data</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.writeframesraw" title="Permalink to this definition">¶</a></dt> <dd><p>Write audio frames, without correcting <em>nframes</em>.</p> <div class="versionchanged"> <p><span class="versionmodified changed">Changed in version 3.4: </span>Any <a class="reference internal" href="../glossary.html#term-bytes-like-object"><span class="xref std std-term">bytes-like object</span></a> is now accepted.</p> </div> </dd></dl> <dl class="method"> <dt id="sunau.AU_write.writeframes"> <code class="descclassname">AU_write.</code><code class="descname">writeframes</code><span class="sig-paren">(</span><em>data</em><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.writeframes" title="Permalink to this definition">¶</a></dt> <dd><p>Write audio frames and make sure <em>nframes</em> is correct.</p> <div class="versionchanged"> <p><span class="versionmodified changed">Changed in version 3.4: </span>Any <a class="reference internal" href="../glossary.html#term-bytes-like-object"><span class="xref std std-term">bytes-like object</span></a> is now accepted.</p> </div> </dd></dl> <dl class="method"> <dt id="sunau.AU_write.close"> <code class="descclassname">AU_write.</code><code class="descname">close</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#sunau.AU_write.close" title="Permalink to this definition">¶</a></dt> <dd><p>Make sure <em>nframes</em> is correct, and close the file.</p> <p>This method is called upon deletion.</p> </dd></dl> <p>Note that it is invalid to set any parameters after calling <code class="xref py py-meth docutils literal notranslate"><span class="pre">writeframes()</span></code> or <code class="xref py py-meth docutils literal notranslate"><span class="pre">writeframesraw()</span></code>.</p> </div> </div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h3><a href="../contents.html">Table of Contents</a></h3> <ul> <li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">sunau</span></code> — Read and write Sun AU files</a><ul> <li><a class="reference internal" href="#au-read-objects">AU_read Objects</a></li> <li><a class="reference internal" href="#au-write-objects">AU_write Objects</a></li> </ul> </li> </ul> <h4>Previous topic</h4> <p class="topless"><a href="aifc.html" title="previous chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">aifc</span></code> — Read and write AIFF and AIFC files</a></p> <h4>Next topic</h4> <p class="topless"><a href="wave.html" title="next chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">wave</span></code> — Read and write WAV files</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../bugs.html">Report a Bug</a></li> <li> <a href="https://github.com/python/cpython/blob/3.7/Doc/library/sunau.rst" rel="nofollow">Show Source </a> </li> </ul> </div> </div> </div> <div class="clearer"></div> </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="wave.html" title="wave — Read and write WAV files" >next</a> |</li> <li class="right" > <a href="aifc.html" title="aifc — Read and write AIFF and AIFC files" >previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; 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