1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta content="width=device-width, initial-scale=1.0" name="viewport"/><meta content="Docutils 0.17.1: http://docutils.sourceforge.net/" name="generator"/>
<title>06-record-table.py - Recording live sound in RAM. — Pyo 1.0.5 documentation</title>
<link href="../../_static/pygments.css" rel="stylesheet" type="text/css"/>
<link href="../../_static/agogo.css" rel="stylesheet" type="text/css"/>
<link href="../../_static/sphinx-codeautolink.css" rel="stylesheet" type="text/css"/>
<link href="../../_static/autoclasstoc.css" rel="stylesheet" type="text/css"/>
<script data-url_root="../../" id="documentation_options" src="../../_static/documentation_options.js"></script>
<script src="../../_static/jquery.js"></script>
<script src="../../_static/underscore.js"></script>
<script src="../../_static/_sphinx_javascript_frameworks_compat.js"></script>
<script src="../../_static/doctools.js"></script>
<script src="../../_static/sphinx_highlight.js"></script>
<link href="../../_static/E-PyoIcon.ico" rel="shortcut icon"/>
<link href="../../about.html" rel="author" title="About these documents"/>
<link href="../../genindex.html" rel="index" title="Index"/>
<link href="../../search.html" rel="search" title="Search"/>
<link href="../05-envelopes/index.html" rel="next" title="05-envelopes"/>
<link href="05-record-streams.html" rel="prev" title="05-record-streams.py - Recording individual audio streams on disk."/>
</head><body>
<div class="header-wrapper" role="banner">
<div class="header">
<div class="headertitle"><a href="../../index.html">Pyo 1.0.5 documentation</a></div>
<div aria-label="related navigation" class="rel" role="navigation">
<a accesskey="P" href="05-record-streams.html" title="05-record-streams.py - Recording individual audio streams on disk.">previous</a> |
<a accesskey="N" href="../05-envelopes/index.html" title="05-envelopes">next</a> |
<a accesskey="I" href="../../genindex.html" title="General Index">index</a>
</div>
</div>
</div>
<div class="content-wrapper">
<div class="content">
<div class="sidebar">
<h3>Table of Contents</h3>
<ul>
<li class="toctree-l1"><a class="reference internal" href="../../about.html">About pyo</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../download.html">Installing pyo with pip</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../compiling.html">Compiling pyo from sources</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../structure.html">Structure of the library</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../gettingstarted.html">Getting started</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../winaudioinspect.html">Configuring the audio output (Windows)</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../perftips.html">Improve performance of pyo programs</a></li>
</ul>
<ul class="current">
<li class="toctree-l1"><a class="reference internal" href="../../api/index.html">API documentation</a></li>
<li class="toctree-l1 current"><a class="reference internal" href="../index.html">Examples</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="../01-intro/index.html">First steps</a></li>
<li class="toctree-l2"><a class="reference internal" href="../02-controls/index.html">Parameter control</a></li>
<li class="toctree-l2"><a class="reference internal" href="../03-generators/index.html">Synthesis generators</a></li>
<li class="toctree-l2 current"><a class="reference internal" href="index.html">Playing with soundfiles</a></li>
<li class="toctree-l2"><a class="reference internal" href="../05-envelopes/index.html">Amplitude envelopes</a></li>
<li class="toctree-l2"><a class="reference internal" href="../06-filters/index.html">Filtering</a></li>
<li class="toctree-l2"><a class="reference internal" href="../07-effects/index.html">Creating sound effects</a></li>
<li class="toctree-l2"><a class="reference internal" href="../08-dynamics/index.html">Dynamic range of audio signals</a></li>
<li class="toctree-l2"><a class="reference internal" href="../09-callbacks/index.html">Calling python functions from audio objects</a></li>
<li class="toctree-l2"><a class="reference internal" href="../10-tables/index.html">Using tables</a></li>
<li class="toctree-l2"><a class="reference internal" href="../16-midi/index.html">How to use MIDI with pyo</a></li>
<li class="toctree-l2"><a class="reference internal" href="../17-osc/index.html">How to use OSC with pyo</a></li>
<li class="toctree-l2"><a class="reference internal" href="../19-multirate/index.html">Multirate audio processing</a></li>
<li class="toctree-l2"><a class="reference internal" href="../20-multicore/index.html">Multicore audio programming</a></li>
<li class="toctree-l2"><a class="reference internal" href="../21-utilities/index.html">Utilities</a></li>
<li class="toctree-l2"><a class="reference internal" href="../22-events/index.html">Events framework</a></li>
<li class="toctree-l2"><a class="reference internal" href="../23-expression/index.html">Evaluating prefix expression</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../tutorials/index.html">Advanced tutorials</a></li>
</ul>
<div role="search">
<h3 style="margin-top: 1.5em;">Search</h3>
<form action="../../search.html" class="search" method="get">
<input name="q" type="text"/>
<input type="submit" value="Go"/>
</form>
</div>
</div>
<div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body" role="main">
<section id="record-table-py-recording-live-sound-in-ram">
<h1>06-record-table.py - Recording live sound in RAM.<a class="headerlink" href="#record-table-py-recording-live-sound-in-ram" title="Permalink to this heading">¶</a></h1>
<p>By recording a stream of sound in RAM, one can quickly re-use the
samples in the current process. A combination NewTable - TableRec
is all what one need to record any stream in a table.</p>
<p>The NewTable object has a <cite>feedback</cite> argument, allowing overdub.</p>
<p>The TableRec object starts a new recording (records until the table
is full) every time its method <cite>play()</cite> is called.</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <a class="sphinx-codeautolink-a" href="../../api/alphabetical.html#module-pyo" title="pyo"><span class="nn">pyo</span></a> <span class="kn">import</span> <span class="o">*</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="c1"># Audio inputs must be available.</span>
<span class="n">s</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/server.html#pyo.Server" title="pyo.lib.server.Server"><span class="n">Server</span></a><span class="p">(</span><span class="n">duplex</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span><span class="o">.</span><span class="n">boot</span><span class="p">()</span>
<span class="c1"># Path of the recorded sound file.</span>
<span class="n">path</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">expanduser</span><span class="p">(</span><span class="s2">"~"</span><span class="p">),</span> <span class="s2">"Desktop"</span><span class="p">,</span> <span class="s2">"synth.wav"</span><span class="p">)</span>
<span class="c1"># Creates a two seconds stereo empty table. The "feedback" argument</span>
<span class="c1"># is the amount of old data to mix with a new recording (overdub).</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/tables.html#pyo.NewTable" title="pyo.lib.tables.NewTable"><span class="n">t</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/tables.html#pyo.NewTable" title="pyo.lib.tables.NewTable"><span class="n">NewTable</span></a><span class="p">(</span><span class="n">length</span><span class="o">=</span><span class="mi">2</span><span class="p">,</span> <span class="n">chnls</span><span class="o">=</span><span class="mi">2</span><span class="p">,</span> <span class="n">feedback</span><span class="o">=</span><span class="mf">0.5</span><span class="p">)</span>
<span class="c1"># Retrieves the stereo input</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Input" title="pyo.lib.generators.Input"><span class="n">inp</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Input" title="pyo.lib.generators.Input"><span class="n">Input</span></a><span class="p">([</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">])</span>
<span class="c1"># Table recorder. Call rec.play() to start a recording, it stops</span>
<span class="c1"># when the table is full. Call it multiple times to overdub.</span>
<span class="n">rec</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/tableprocess.html#pyo.TableRec" title="pyo.lib.tableprocess.TableRec"><span class="n">TableRec</span></a><span class="p">(</span><a class="sphinx-codeautolink-a" href="../../api/classes/generators.html#pyo.Input" title="pyo.lib.generators.Input"><span class="n">inp</span></a><span class="p">,</span> <span class="n">table</span><span class="o">=</span><a class="sphinx-codeautolink-a" href="../../api/classes/tables.html#pyo.NewTable" title="pyo.lib.tables.NewTable"><span class="n">t</span></a><span class="p">,</span> <span class="n">fadetime</span><span class="o">=</span><span class="mf">0.05</span><span class="p">)</span><span class="o">.</span><span class="n">play</span><span class="p">()</span>
<span class="c1"># Reads the content of the table in loop.</span>
<span class="n">osc</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/tableprocess.html#pyo.Osc" title="pyo.lib.tableprocess.Osc"><span class="n">Osc</span></a><span class="p">(</span><span class="n">table</span><span class="o">=</span><a class="sphinx-codeautolink-a" href="../../api/classes/tables.html#pyo.NewTable" title="pyo.lib.tables.NewTable"><span class="n">t</span></a><span class="p">,</span> <span class="n">freq</span><span class="o">=</span><span class="n">t</span><span class="o">.</span><span class="n">getRate</span><span class="p">(),</span> <span class="n">mul</span><span class="o">=</span><span class="mf">0.5</span><span class="p">)</span><span class="o">.</span><span class="n">out</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">saveToDisk</span><span class="p">():</span>
<a class="sphinx-codeautolink-a" href="../../api/functions/sndfile.html#pyo.savefileFromTable" title="pyo.savefileFromTable"><span class="n">savefileFromTable</span></a><span class="p">(</span><span class="n">table</span><span class="o">=</span><a class="sphinx-codeautolink-a" href="../../api/classes/tables.html#pyo.NewTable" title="pyo.lib.tables.NewTable"><span class="n">t</span></a><span class="p">,</span> <span class="n">path</span><span class="o">=</span><span class="n">path</span><span class="p">,</span> <span class="n">fileformat</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">sampletype</span><span class="o">=</span><span class="mi">3</span><span class="p">)</span>
<span class="c1"># After two seconds, the table content is saved to a file on disk.</span>
<span class="n">sv</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/pattern.html#pyo.CallAfter" title="pyo.lib.pattern.CallAfter"><span class="n">CallAfter</span></a><span class="p">(</span><span class="n">saveToDisk</span><span class="p">,</span> <span class="n">time</span><span class="o">=</span><span class="mi">2</span><span class="p">)</span><span class="o">.</span><span class="n">play</span><span class="p">()</span>
<span class="n">s</span><span class="o">.</span><span class="n">gui</span><span class="p">(</span><span class="nb">locals</span><span class="p">())</span>
</pre></div>
</div>
</section>
<div class="clearer"></div>
</div>
</div>
</div>
</div>
<div class="clearer"></div>
</div>
</div>
<div class="footer-wrapper">
<div class="footer">
<div class="left">
<div aria-label="related navigaton" role="navigation">
<a href="05-record-streams.html" title="05-record-streams.py - Recording individual audio streams on disk.">previous</a> |
<a href="../05-envelopes/index.html" title="05-envelopes">next</a> |
<a href="../../genindex.html" title="General Index">index</a>
</div>
<div aria-label="source link" role="note">
</div>
</div>
<div class="right">
<div class="footer" role="contentinfo">
© Copyright 2021, Olivier Bélanger.
Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 5.3.0.
</div>
</div>
<div class="clearer"></div>
</div>
</div>
</body>
</html>
|
