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<li><a class="reference internal" href="#">Self-Voicing</a><ul>
<li><a class="reference internal" href="#speech-synthesis">Speech Synthesis</a></li>
<li><a class="reference internal" href="#creator-concerns">Creator Concerns</a></li>
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<div class="section" id="self-voicing">
<span id="id1"></span><h1>Self-Voicing<a class="headerlink" href="#self-voicing" title="Permalink to this headline"> link</a></h1>
<p>Ren'Py supports a self-voicing mode in which a speech synthesizer is used
to read out text and other interface elements. This is intended to make
Ren'Py games accessible to the vision impaired.</p>
<p>The Self-voicing mode can be toggled by pressing the <code class="docutils literal notranslate"><span class="pre">v</span></code> key.</p>
<p>When in self-voicing mode, keyboard navigation is changed so that the
up and down arrow keys with iterate through all focusable displayables
on the screen.</p>
<p>When a displayable is focused, Ren'Py will read the text associated with that
displayable out loud. If no displayable is focused, Ren'Py will read on-screen
text that cannot be focused. This will generally include dialogue and other
text that comprises the game.</p>
<div class="section" id="speech-synthesis">
<h2>Speech Synthesis<a class="headerlink" href="#speech-synthesis" title="Permalink to this headline"> link</a></h2>
<p>Ren'Py relies on the operating system to provide speech synthesis
services. To adjust the speed of speech synthesis and the voice used,
adjust your platform's speech settings.</p>
<dl class="docutils">
<dt>Windows</dt>
<dd>On Windows, Ren'Py uses the Microsoft Speech API. Speech synthesis
settings can be changed on the &quot;Text to Speech&quot; tab of the &quot;Speech
Recognition&quot; control panel.</dd>
<dt>Mac OS X</dt>
<dd>On Mac OS X, Ren'Py uses the <code class="docutils literal notranslate"><span class="pre">say</span></code> command. Speech synthesis settings
can be changed on the &quot;Text to Speech&quot; tab of the &quot;Dictation &amp; Speech&quot;
control panel.</dd>
<dt>Linux</dt>
<dd>On Linux, Ren'Py uses the <code class="docutils literal notranslate"><span class="pre">espeak</span></code> command. Espeak may need to be
installed using your package manager before self-voicing mode will
work.</dd>
<dt>Android, iOS, Chrome OS</dt>
<dd>Self-voicing mode is not supported on Android, iOS, or Chrome OS.</dd>
</dl>
<p>The default voice can be selected on a per-platform basis, using the
<a class="reference internal" href="config.html#var-config.tts_voice"><code class="xref std std-var docutils literal notranslate"><span class="pre">config.tts_voice</span></code></a> variable. For example:</p>
<div class="highlight-renpy notranslate"><div class="highlight"><pre><span></span><span class="k">init</span> <span class="k">python</span><span class="p">:</span>
<span class="k">if</span> <span class="n">renpy</span><span class="o">.</span><span class="n">windows</span><span class="p">:</span>
<span class="n">config</span><span class="o">.</span><span class="n">tts_voice</span> <span class="o">=</span> <span class="s2">&quot;Mark&quot;</span>
<span class="k">elif</span> <span class="n">renpy</span><span class="o">.</span><span class="n">macintosh</span><span class="p">:</span>
<span class="n">config</span><span class="o">.</span><span class="n">tts_voice</span> <span class="o">=</span> <span class="s2">&quot;Alex&quot;</span>
<span class="k">elif</span> <span class="n">renpy</span><span class="o">.</span><span class="n">linux</span><span class="p">:</span>
<span class="n">config</span><span class="o">.</span><span class="n">tts_voice</span> <span class="o">=</span> <span class="s2">&quot;english_rp&quot;</span>
</pre></div>
</div>
<p>The available voice vary based on the platform.</p>
</div>
<div class="section" id="creator-concerns">
<h2>Creator Concerns<a class="headerlink" href="#creator-concerns" title="Permalink to this headline"> link</a></h2>
<p>Ren'Py's self-voicing works by extracting text from displayables and
reading it to the player. Ren'Py extracts this text from two places.</p>
<dl class="docutils">
<dt>Text displayables</dt>
<dd>Ren'Py will extract text from a Text displayable, and make it
available to be read to the player.</dd>
<dt>Alternative text</dt>
<dd><p class="first">Alternative text is supplied by a displayable's <a class="reference internal" href="style_properties.html#style-property-alt"><code class="xref std std-propref docutils literal notranslate"><span class="pre">alt</span></code></a> style
property. It can also be supplied by actions supplied to buttons
and values supplied to bars. Explicitly supplied alternative takes
precedence over text supplied by actions or values, and both take
precedence over text extracted from Text displayables.</p>
<p>Alternative text is translated using Ren'Py's string translation
mechanism. Alternative text takes precedence over text extracted
from a displayable and its children, but such child text is made
available as the &quot;[text]&quot; string substitution. No other string
substitutions are allowed.</p>
<p>For example:</p>
<div class="highlight-renpy notranslate"><div class="highlight"><pre><span></span><span class="k">screen</span> <span class="n">information</span><span class="p">(</span><span class="n">message</span><span class="p">,</span> <span class="n">planet</span><span class="p">,</span> <span class="n">badness</span><span class="p">):</span>
<span class="k">text</span> <span class="n">message</span><span class="p">:</span>
<span class="na">color</span> <span class="n">color_from_badness</span><span class="p">(</span><span class="n">badness</span><span class="p">)</span>
<span class="na">alt</span> <span class="s2">&quot;Information for you : [text]. Badness is &quot;</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">badness</span><span class="p">)</span>
<span class="k">text</span> <span class="s2">&quot;ORIGIN_OF_MESSAGE_{color=#f00}[planet!u]{/color}&quot;</span><span class="p">:</span>
<span class="na">alt</span> <span class="s2">&quot;Origin of message is &quot;</span> <span class="o">+</span> <span class="n">planet</span>
</pre></div>
</div>
<p>In the above example, the <code class="docutils literal notranslate"><span class="pre">badness</span></code> and <code class="docutils literal notranslate"><span class="pre">planet</span></code> variables
cannot be substituted directly using &quot;[badness]&quot;. Concatenating
it manually is a solution.</p>
<p>Supplying the <cite>who_alt</cite> and <cite>what_alt</cite> parameters to Character
sets the alt style property for the character name and body text,
respectively. As an example, we define a Character that uses italics
to indicate thoughts normally, but explicitly indicates thoughts
via self voicing:</p>
<div class="last highlight-renpy notranslate"><div class="highlight"><pre><span></span><span class="k">define</span> <span class="n">thought</span> <span class="o">=</span> <span class="n">Character</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">what_italic</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">what_alt</span><span class="o">=</span><span class="s2">&quot;I think, [text]&quot;</span><span class="p">)</span>
</pre></div>
</div>
</dd>
<dt>Descriptive Text</dt>
<dd><p class="first">Descriptive text is text that is displayed (and spoken) by the narrator if
self-voicing is enabled. The text is not displayed if self-voicing is
disabled. Self-voicing text uses the <a class="reference internal" href="#var-alt"><code class="xref std std-var docutils literal notranslate"><span class="pre">alt</span></code></a> variable, which is defined to
be similar to a character.</p>
<dl class="var">
<dt id="var-alt">
<code class="descname">alt</code> = ...<a class="headerlink" href="#var-alt" title="Permalink to this definition"> link</a></dt>
<dd><p>A character-like object that uses the narrator to speak text if
self-voicing is enabled.</p>
</dd></dl>
<p>For example:</p>
<div class="highlight-renpy notranslate"><div class="highlight"><pre><span></span><span class="n">e</span> <span class="s2">&quot;Hang on, this is gonna be a bumpy ride!&quot;</span>
<span class="na">alt</span> <span class="s2">&quot;And then the sun exploded...&quot;</span>
<span class="c1"># A complex and exciting cut scene.</span>
<span class="k">show</span> <span class="k">event</span> <span class="n">sun_exploding</span>
<span class="k">pause</span> <span class="mi">10</span>
</pre></div>
</div>
<p>There is a variable that controls descriptive text:</p>
<dl class="last var">
<dt id="var-config.descriptive_text_character">
define <code class="descname">config.descriptive_text_character</code> = None<a class="headerlink" href="#var-config.descriptive_text_character" title="Permalink to this definition"> link</a></dt>
<dd><p>If not None, this should be a character object that is used to
display the descriptive text, instead of the narrator.</p>
</dd></dl>
</dd>
</dl>
<p>A self-voicing debug mode can be enabled by typing Shift+Alt+V. This will
display the text that would be voiced on the screen for development
purposes.</p>
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