438 lines
30 KiB
HTML
438 lines
30 KiB
HTML
|
||
<!DOCTYPE html>
|
||
|
||
<html xmlns="http://www.w3.org/1999/xhtml">
|
||
<head>
|
||
<meta charset="utf-8" />
|
||
<title>wave — Read and write WAV 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="chunk — Read IFF chunked data" href="chunk.html" />
|
||
<link rel="prev" title="sunau — Read and write Sun AU files" href="sunau.html" />
|
||
<link rel="shortcut icon" type="image/png" href="../_static/py.png" />
|
||
<link rel="canonical" href="https://docs.python.org/3/library/wave.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="chunk.html" title="chunk — Read IFF chunked data"
|
||
accesskey="N">next</a> |</li>
|
||
<li class="right" >
|
||
<a href="sunau.html" title="sunau — Read and write Sun AU 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-wave">
|
||
<span id="wave-read-and-write-wav-files"></span><h1><a class="reference internal" href="#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> — Read and write WAV files<a class="headerlink" href="#module-wave" 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/wave.py">Lib/wave.py</a></p>
|
||
<hr class="docutils" />
|
||
<p>The <a class="reference internal" href="#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> module provides a convenient interface to the WAV sound format.
|
||
It does not support compression/decompression, but it does support mono/stereo.</p>
|
||
<p>The <a class="reference internal" href="#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> module defines the following function and exception:</p>
|
||
<dl class="function">
|
||
<dt id="wave.open">
|
||
<code class="descclassname">wave.</code><code class="descname">open</code><span class="sig-paren">(</span><em>file</em>, <em>mode=None</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.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
|
||
file-like object. <em>mode</em> can be:</p>
|
||
<dl class="simple">
|
||
<dt><code class="docutils literal notranslate"><span class="pre">'rb'</span></code></dt><dd><p>Read only mode.</p>
|
||
</dd>
|
||
<dt><code class="docutils literal notranslate"><span class="pre">'wb'</span></code></dt><dd><p>Write only mode.</p>
|
||
</dd>
|
||
</dl>
|
||
<p>Note that it does not allow read/write WAV files.</p>
|
||
<p>A <em>mode</em> of <code class="docutils literal notranslate"><span class="pre">'rb'</span></code> returns a <code class="xref py py-class docutils literal notranslate"><span class="pre">Wave_read</span></code> object, while a <em>mode</em> of
|
||
<code class="docutils literal notranslate"><span class="pre">'wb'</span></code> returns a <code class="xref py py-class docutils literal notranslate"><span class="pre">Wave_write</span></code> object. If <em>mode</em> is omitted and a
|
||
file-like object is passed as <em>file</em>, <code class="docutils literal notranslate"><span class="pre">file.mode</span></code> is used as the default
|
||
value for <em>mode</em>.</p>
|
||
<p>If you pass in a file-like object, the wave object will not close it when its
|
||
<code class="xref py py-meth docutils literal notranslate"><span class="pre">close()</span></code> method is called; it is the caller’s responsibility to close
|
||
the file object.</p>
|
||
<p>The <a class="reference internal" href="#wave.open" title="wave.open"><code class="xref py py-func docutils literal notranslate"><span class="pre">open()</span></code></a> function may be used in a <a class="reference internal" href="../reference/compound_stmts.html#with"><code class="xref std std-keyword docutils literal notranslate"><span class="pre">with</span></code></a> statement. When
|
||
the <code class="xref std std-keyword docutils literal notranslate"><span class="pre">with</span></code> block completes, the <a class="reference internal" href="#wave.Wave_read.close" title="wave.Wave_read.close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">Wave_read.close()</span></code></a> or <a class="reference internal" href="#wave.Wave_write.close" title="wave.Wave_write.close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">Wave_write.close()</span></code></a> method is called.</p>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">Changed in version 3.4: </span>Added support for unseekable files.</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="wave.openfp">
|
||
<code class="descclassname">wave.</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="#wave.openfp" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>A synonym for <a class="reference internal" href="#wave.open" title="wave.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>
|
||
|
||
<dl class="exception">
|
||
<dt id="wave.Error">
|
||
<em class="property">exception </em><code class="descclassname">wave.</code><code class="descname">Error</code><a class="headerlink" href="#wave.Error" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>An error raised when something is impossible because it violates the WAV
|
||
specification or hits an implementation deficiency.</p>
|
||
</dd></dl>
|
||
|
||
<div class="section" id="wave-read-objects">
|
||
<span id="id1"></span><h2>Wave_read Objects<a class="headerlink" href="#wave-read-objects" title="Permalink to this headline">¶</a></h2>
|
||
<p>Wave_read objects, as returned by <a class="reference internal" href="#wave.open" title="wave.open"><code class="xref py py-func docutils literal notranslate"><span class="pre">open()</span></code></a>, have the following methods:</p>
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.close">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">close</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.close" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Close the stream if it was opened by <a class="reference internal" href="#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>, and make the instance
|
||
unusable. This is called automatically on object collection.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.getnchannels">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">getnchannels</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.getnchannels" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Returns number of audio channels (<code class="docutils literal notranslate"><span class="pre">1</span></code> for mono, <code class="docutils literal notranslate"><span class="pre">2</span></code> for stereo).</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.getsampwidth">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">getsampwidth</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.getsampwidth" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Returns sample width in bytes.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.getframerate">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">getframerate</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.getframerate" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Returns sampling frequency.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.getnframes">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">getnframes</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.getnframes" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Returns number of audio frames.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.getcomptype">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">getcomptype</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.getcomptype" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Returns compression type (<code class="docutils literal notranslate"><span class="pre">'NONE'</span></code> is the only supported type).</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.getcompname">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">getcompname</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.getcompname" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Human-readable version of <a class="reference internal" href="#wave.Wave_read.getcomptype" title="wave.Wave_read.getcomptype"><code class="xref py py-meth docutils literal notranslate"><span class="pre">getcomptype()</span></code></a>. Usually <code class="docutils literal notranslate"><span class="pre">'not</span> <span class="pre">compressed'</span></code>
|
||
parallels <code class="docutils literal notranslate"><span class="pre">'NONE'</span></code>.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.getparams">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">getparams</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_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="wave.Wave_read.readframes">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">readframes</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_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.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.rewind">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">rewind</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_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 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>
|
||
module, and don’t do anything interesting.</p>
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.getmarkers">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">getmarkers</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_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="wave.Wave_read.getmark">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">getmark</code><span class="sig-paren">(</span><em>id</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.getmark" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Raise an error.</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="wave.Wave_read.setpos">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">setpos</code><span class="sig-paren">(</span><em>pos</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.setpos" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Set the file pointer to the specified position.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_read.tell">
|
||
<code class="descclassname">Wave_read.</code><code class="descname">tell</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_read.tell" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Return current file pointer position.</p>
|
||
</dd></dl>
|
||
|
||
</div>
|
||
<div class="section" id="wave-write-objects">
|
||
<span id="id2"></span><h2>Wave_write Objects<a class="headerlink" href="#wave-write-objects" title="Permalink to this headline">¶</a></h2>
|
||
<p>For seekable output streams, the <code class="docutils literal notranslate"><span class="pre">wave</span></code> header will automatically be updated
|
||
to reflect the number of frames actually written. For unseekable streams, the
|
||
<em>nframes</em> value must be accurate when the first frame data is written. An
|
||
accurate <em>nframes</em> value can be achieved either by calling
|
||
<a class="reference internal" href="#wave.Wave_write.setnframes" title="wave.Wave_write.setnframes"><code class="xref py py-meth docutils literal notranslate"><span class="pre">setnframes()</span></code></a> or <a class="reference internal" href="#wave.Wave_write.setparams" title="wave.Wave_write.setparams"><code class="xref py py-meth docutils literal notranslate"><span class="pre">setparams()</span></code></a> with the number
|
||
of frames that will be written before <a class="reference internal" href="#wave.Wave_write.close" title="wave.Wave_write.close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">close()</span></code></a> is called and
|
||
then using <a class="reference internal" href="#wave.Wave_write.writeframesraw" title="wave.Wave_write.writeframesraw"><code class="xref py py-meth docutils literal notranslate"><span class="pre">writeframesraw()</span></code></a> to write the frame data, or by
|
||
calling <a class="reference internal" href="#wave.Wave_write.writeframes" title="wave.Wave_write.writeframes"><code class="xref py py-meth docutils literal notranslate"><span class="pre">writeframes()</span></code></a> with all of the frame data to be
|
||
written. In the latter case <a class="reference internal" href="#wave.Wave_write.writeframes" title="wave.Wave_write.writeframes"><code class="xref py py-meth docutils literal notranslate"><span class="pre">writeframes()</span></code></a> will calculate
|
||
the number of frames in the data and set <em>nframes</em> accordingly before writing
|
||
the frame data.</p>
|
||
<p>Wave_write objects, as returned by <a class="reference internal" href="#wave.open" title="wave.open"><code class="xref py py-func docutils literal notranslate"><span class="pre">open()</span></code></a>, have the following methods:</p>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">Changed in version 3.4: </span>Added support for unseekable files.</p>
|
||
</div>
|
||
<dl class="method">
|
||
<dt id="wave.Wave_write.close">
|
||
<code class="descclassname">Wave_write.</code><code class="descname">close</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_write.close" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Make sure <em>nframes</em> is correct, and close the file if it was opened by
|
||
<a class="reference internal" href="#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>. This method is called upon object collection. It will raise
|
||
an exception if the output stream is not seekable and <em>nframes</em> does not
|
||
match the number of frames actually written.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_write.setnchannels">
|
||
<code class="descclassname">Wave_write.</code><code class="descname">setnchannels</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_write.setnchannels" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Set the number of channels.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_write.setsampwidth">
|
||
<code class="descclassname">Wave_write.</code><code class="descname">setsampwidth</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_write.setsampwidth" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Set the sample width to <em>n</em> bytes.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_write.setframerate">
|
||
<code class="descclassname">Wave_write.</code><code class="descname">setframerate</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_write.setframerate" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Set the frame rate to <em>n</em>.</p>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">Changed in version 3.2: </span>A non-integral input to this method is rounded to the nearest
|
||
integer.</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_write.setnframes">
|
||
<code class="descclassname">Wave_write.</code><code class="descname">setnframes</code><span class="sig-paren">(</span><em>n</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_write.setnframes" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Set the number of frames to <em>n</em>. This will be changed later if the number
|
||
of frames actually written is different (this update attempt will
|
||
raise an error if the output stream is not seekable).</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_write.setcomptype">
|
||
<code class="descclassname">Wave_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="#wave.Wave_write.setcomptype" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Set the compression type and description. At the moment, only compression type
|
||
<code class="docutils literal notranslate"><span class="pre">NONE</span></code> is supported, meaning no compression.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_write.setparams">
|
||
<code class="descclassname">Wave_write.</code><code class="descname">setparams</code><span class="sig-paren">(</span><em>tuple</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_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. Sets all
|
||
parameters.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_write.tell">
|
||
<code class="descclassname">Wave_write.</code><code class="descname">tell</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_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="#wave.Wave_read.tell" title="wave.Wave_read.tell"><code class="xref py py-meth docutils literal notranslate"><span class="pre">Wave_read.tell()</span></code></a> and <a class="reference internal" href="#wave.Wave_read.setpos" title="wave.Wave_read.setpos"><code class="xref py py-meth docutils literal notranslate"><span class="pre">Wave_read.setpos()</span></code></a> methods.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="method">
|
||
<dt id="wave.Wave_write.writeframesraw">
|
||
<code class="descclassname">Wave_write.</code><code class="descname">writeframesraw</code><span class="sig-paren">(</span><em>data</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_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="wave.Wave_write.writeframes">
|
||
<code class="descclassname">Wave_write.</code><code class="descname">writeframes</code><span class="sig-paren">(</span><em>data</em><span class="sig-paren">)</span><a class="headerlink" href="#wave.Wave_write.writeframes" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Write audio frames and make sure <em>nframes</em> is correct. It will raise an
|
||
error if the output stream is not seekable and the total number of frames
|
||
that have been written after <em>data</em> has been written does not match the
|
||
previously set value for <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>
|
||
|
||
<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>, and any attempt to do so will raise
|
||
<a class="reference internal" href="#wave.Error" title="wave.Error"><code class="xref py py-exc docutils literal notranslate"><span class="pre">wave.Error</span></code></a>.</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">wave</span></code> — Read and write WAV files</a><ul>
|
||
<li><a class="reference internal" href="#wave-read-objects">Wave_read Objects</a></li>
|
||
<li><a class="reference internal" href="#wave-write-objects">Wave_write Objects</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
|
||
<h4>Previous topic</h4>
|
||
<p class="topless"><a href="sunau.html"
|
||
title="previous chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">sunau</span></code> — Read and write Sun AU files</a></p>
|
||
<h4>Next topic</h4>
|
||
<p class="topless"><a href="chunk.html"
|
||
title="next chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">chunk</span></code> — Read IFF chunked data</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/wave.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="chunk.html" title="chunk — Read IFF chunked data"
|
||
>next</a> |</li>
|
||
<li class="right" >
|
||
<a href="sunau.html" title="sunau — Read and write Sun AU files"
|
||
>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" >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="footer">
|
||
© <a href="../copyright.html">Copyright</a> 2001-2019, Python Software Foundation.
|
||
<br />
|
||
The Python Software Foundation is a non-profit corporation.
|
||
<a href="https://www.python.org/psf/donations/">Please donate.</a>
|
||
<br />
|
||
Last updated on Jul 13, 2019.
|
||
<a href="../bugs.html">Found a bug</a>?
|
||
<br />
|
||
Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 2.0.1.
|
||
</div>
|
||
|
||
</body>
|
||
</html> |