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initialize-camera
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25Z"/></svg>
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<h1 id="initialize-microphone">initialize-microphone<a class="headerlink" href="#initialize-microphone" title="Permanent link">&para;</a></h1>
<p>Current version: 1.0.2. <a href="https://github.com/jspsych/jsPsych/blob/main/packages/plugin-initialize-microphone/CHANGELOG.md">See version history</a>.</p>
<p>This plugin asks the participant to grant permission to access a microphone.
If multiple microphones are connected to the participant's device, then it allows the participant to pick which device to use.
Once access is granted for an experiment you do not need to get permission again.</p>
<p>Once the microphone is selected with this plugin it can be accessed with <a href="../../reference/jspsych-pluginAPI/#getmicrophonerecorder"><code>jsPsych.pluginAPI.getMicrophoneRecorder()</code></a>.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>When recording from a microphone your experiment will need to be running over <code>https://</code> protocol. If you try to run the experiment locally using the <code>file://</code> protocol or over <code>http://</code> protocol you will not be able to access the microphone because of <a href="https://blog.mozilla.org/webrtc/camera-microphone-require-https-in-firefox-68/">potential security problems</a>.</p>
</div>
<h2 id="parameters">Parameters<a class="headerlink" href="#parameters" title="Permanent link">&para;</a></h2>
<p>In addition to the <a href="../../overview/plugins/#parameters-available-in-all-plugins">parameters available in all plugins</a>, this plugin accepts the following parameters. Parameters with a default value of <em>undefined</em> must be specified. Other parameters can be left unspecified if the default value is acceptable.</p>
<table>
<thead>
<tr>
<th>Parameter</th>
<th>Type</th>
<th>Default Value</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>device_select_message</td>
<td>html string</td>
<td><code>&lt;p&gt;Please select the microphone you would like to use.&lt;/p&gt;</code></td>
<td>The message to display when the user is presented with a dropdown list of available devices.</td>
</tr>
<tr>
<td>button_label</td>
<td>sting</td>
<td>'Use this microphone.'</td>
<td>The label for the select button.</td>
</tr>
</tbody>
</table>
<h2 id="data-generated">Data Generated<a class="headerlink" href="#data-generated" title="Permanent link">&para;</a></h2>
<p>In addition to the <a href="../../overview/plugins/#data-collected-by-all-plugins">default data collected by all plugins</a>, this plugin collects the following data for each trial.</p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Value</th>
</tr>
</thead>
<tbody>
<tr>
<td>device_id</td>
<td>string</td>
<td>The <a href="https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo/deviceId">device ID</a> of the selected microphone.</td>
</tr>
</tbody>
</table>
<h2 id="simulation-mode">Simulation Mode<a class="headerlink" href="#simulation-mode" title="Permanent link">&para;</a></h2>
<p>This plugin does not yet support <a href="../../overview/simulation/">simulation mode</a>.</p>
<h2 id="install">Install<a class="headerlink" href="#install" title="Permanent link">&para;</a></h2>
<p>Using the CDN-hosted JavaScript file:</p>
<div class="highlight"><pre><span></span><code><span class="o">&lt;</span><span class="nx">script</span><span class="w"> </span><span class="nx">src</span><span class="o">=</span><span class="s2">&quot;https://unpkg.com/@jspsych/plugin-initialize-microphone@1.0.2&quot;</span><span class="o">&gt;&lt;</span><span class="err">/script&gt;</span><span class="w"></span>
</code></pre></div>
<p>Using the JavaScript file downloaded from a GitHub release dist archive:</p>
<div class="highlight"><pre><span></span><code><span class="o">&lt;</span><span class="nx">script</span><span class="w"> </span><span class="nx">src</span><span class="o">=</span><span class="s2">&quot;jspsych/plugin-initialize-microphone.js&quot;</span><span class="o">&gt;&lt;</span><span class="err">/script&gt;</span><span class="w"></span>
</code></pre></div>
<p>Using NPM:</p>
<p><div class="highlight"><pre><span></span><code>npm install @jspsych/plugin-initialize-microphone
</code></pre></div>
<div class="highlight"><pre><span></span><code><span class="k">import</span><span class="w"> </span><span class="nx">initializeMicrophone</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;@jspsych/plugin-initialize-microphone&#39;</span><span class="p">;</span><span class="w"></span>
</code></pre></div></p>
<h2 id="examples">Examples<a class="headerlink" href="#examples" title="Permanent link">&para;</a></h2>
<details class="example" open="open">
<summary>Ask for microphone permission</summary>
<div class="tabbed-set tabbed-alternate" data-tabs="1:2"><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><div class="tabbed-labels"><label for="__tabbed_1_1">Code</label><label for="__tabbed_1_2">Demo</label></div>
<div class="tabbed-content">
<div class="tabbed-block">
<div class="highlight"><pre><span></span><code><span class="kd">var</span><span class="w"> </span><span class="nx">trial</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w"> </span><span class="nx">type</span><span class="o">:</span><span class="w"> </span><span class="nx">jsPsychInitializeMicrophone</span><span class="w"></span>
<span class="p">};</span><span class="w"></span>
</code></pre></div>
</div>
<div class="tabbed-block">
<p><div style="text-align:center;">
<iframe src="../../demos/jspsych-initialize-microphone-demo1.html" width="90%;" height="600px;" frameBorder="0"></iframe>
</div></p>
</div>
</div>
</div>
<p><a target="_blank" rel="noopener noreferrer" href="../../demos/jspsych-initialize-microphone-demo1.html">Open demo in new tab</a></p>
</details>
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