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
|
<!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>07-midifile-with-mido.py - Reading a MIDI file with mido and sending the events to pyo. — 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="../17-osc/index.html" rel="next" title="17-osc"/>
<link href="06-midi-out.html" rel="prev" title="06-midi-out.py - Sending MIDI events from pyo."/>
</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="06-midi-out.html" title="06-midi-out.py - Sending MIDI events from pyo.">previous</a> |
<a accesskey="N" href="../17-osc/index.html" title="17-osc">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"><a class="reference internal" href="../04-soundfiles/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 current"><a class="reference internal" href="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="midifile-with-mido-py-reading-a-midi-file-with-mido-and-sending-the-events-to-pyo">
<h1>07-midifile-with-mido.py - Reading a MIDI file with mido and sending the events to pyo.<a class="headerlink" href="#midifile-with-mido-py-reading-a-midi-file-with-mido-and-sending-the-events-to-pyo" title="Permalink to this heading">¶</a></h1>
<p>This example shows how simple it is to play a MIDI file with mido and send the events
to an audio synth build with pyo.</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="c1"># Try to import MidiFile from the mido module. You can install mido with pip:</span>
<span class="c1"># pip install mido</span>
<span class="k">try</span><span class="p">:</span>
<span class="kn">from</span> <span class="nn">mido</span> <span class="kn">import</span> <span class="n">MidiFile</span>
<span class="k">except</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">"The `mido` module must be installed to run this example!"</span><span class="p">)</span>
<span class="n">exit</span><span class="p">()</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="o">.</span><span class="n">boot</span><span class="p">()</span><span class="o">.</span><span class="n">start</span><span class="p">()</span>
<span class="c1"># A little audio synth to play the MIDI events.</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/midi.html#pyo.Notein" title="pyo.lib.midi.Notein"><span class="n">mid</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/midi.html#pyo.Notein" title="pyo.lib.midi.Notein"><span class="n">Notein</span></a><span class="p">()</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/midi.html#pyo.MidiAdsr" title="pyo.lib.midi.MidiAdsr"><span class="n">amp</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/midi.html#pyo.MidiAdsr" title="pyo.lib.midi.MidiAdsr"><span class="n">MidiAdsr</span></a><span class="p">(</span><a class="sphinx-codeautolink-a" href="../../api/classes/midi.html#pyo.Notein" title="pyo.lib.midi.Notein"><span class="n">mid</span></a><span class="p">[</span><span class="s2">"velocity"</span><span class="p">])</span>
<a class="sphinx-codeautolink-a" href="../../api/classes/utils.html#pyo.MToF" title="pyo.lib.utils.MToF"><span class="n">pit</span></a> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/utils.html#pyo.MToF" title="pyo.lib.utils.MToF"><span class="n">MToF</span></a><span class="p">(</span><a class="sphinx-codeautolink-a" href="../../api/classes/midi.html#pyo.Notein" title="pyo.lib.midi.Notein"><span class="n">mid</span></a><span class="p">[</span><span class="s2">"pitch"</span><span class="p">])</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><a class="sphinx-codeautolink-a" href="../../api/classes/tables.html#pyo.SquareTable" title="pyo.lib.tables.SquareTable"><span class="n">SquareTable</span></a><span class="p">(),</span> <span class="n">freq</span><span class="o">=</span><a class="sphinx-codeautolink-a" href="../../api/classes/utils.html#pyo.MToF" title="pyo.lib.utils.MToF"><span class="n">pit</span></a><span class="p">,</span> <span class="n">mul</span><span class="o">=</span><a class="sphinx-codeautolink-a" href="../../api/classes/midi.html#pyo.MidiAdsr" title="pyo.lib.midi.MidiAdsr"><span class="n">amp</span></a><span class="p">)</span><span class="o">.</span><span class="n">mix</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="n">rev</span> <span class="o">=</span> <a class="sphinx-codeautolink-a" href="../../api/classes/effects.html#pyo.STRev" title="pyo.lib.effects.STRev"><span class="n">STRev</span></a><span class="p">(</span><span class="n">osc</span><span class="p">,</span> <span class="n">revtime</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">cutoff</span><span class="o">=</span><span class="mi">4000</span><span class="p">,</span> <span class="n">bal</span><span class="o">=</span><span class="mf">0.2</span><span class="p">)</span><span class="o">.</span><span class="n">out</span><span class="p">()</span>
<span class="c1"># Opening the MIDI file...</span>
<span class="n">mid</span> <span class="o">=</span> <span class="n">MidiFile</span><span class="p">(</span><span class="s2">"../snds/mapleleafrag.mid"</span><span class="p">)</span>
<span class="c1"># ... and reading its content.</span>
<span class="k">for</span> <span class="n">message</span> <span class="ow">in</span> <span class="n">mid</span><span class="o">.</span><span class="n">play</span><span class="p">():</span>
<span class="c1"># For each message, we convert it to integer data with the bytes()</span>
<span class="c1"># method and send the values to pyo's Server with the addMidiEvent()</span>
<span class="c1"># method. This method programmatically adds a MIDI message to the</span>
<span class="c1"># server's internal MIDI event buffer.</span>
<span class="n">s</span><span class="o">.</span><span class="n">addMidiEvent</span><span class="p">(</span><span class="o">*</span><span class="n">message</span><span class="o">.</span><span class="n">bytes</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="06-midi-out.html" title="06-midi-out.py - Sending MIDI events from pyo.">previous</a> |
<a href="../17-osc/index.html" title="17-osc">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>
|
