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<pid="w3c-state"><ahref="https://www.w3.org/standards/types/#CG-DRAFT">Draft Community Group Report</a>, <timeclass="dt-updated" datetime="2025-02-20">20 February 2025</time></p>
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<pid="w3c-state"><ahref="https://www.w3.org/standards/types/#CG-DRAFT">Draft Community Group Report</a>, <timeclass="dt-updated" datetime="2025-02-28">28 February 2025</time></p>
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<detailsopen>
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<summary>More details about this document</summary>
<li>User click on a visible speech input element which has an obvious graphical representation showing that it will start speech input.
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<li>Accepting a permission prompt shown as the result of a call to <aclass="idl-code"data-link-type="method" href="#dom-speechrecognition-start" id="ref-for-dom-speechrecognition-start">start()</a>.
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<li>Accepting a permission prompt shown as the result of a call to <codeclass="idl"><adata-link-type="idl" href="#dom-speechrecognition-start" id="ref-for-dom-speechrecognition-start">start()</a></code>.
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<li>Consent previously granted to always allow speech input for this web page.
Start the speech recognition process, directly from a microphone on the device.
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When invoked, run the following steps:
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<p>Let <var>requestMicrophonePermission</var> to <code>true</code>.</p>
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<p>Let <var>requestMicrophonePermission</var>be a boolan variable set to to <code>true</code>.</p>
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<p>Run the <adata-link-type="dfn" href="#start-session-algorithm" id="ref-for-start-session-algorithm">start session algorithm</a> with <var>requestMicrophonePermission</var>.</p>
Start the speech recognition process, using a <codeclass="idl"><adata-link-type="idl" href="https://w3c.github.io/mediacapture-main/#dom-mediastreamtrack" id="ref-for-dom-mediastreamtrack②">MediaStreamTrack</a></code> When invoked, run the following steps:
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<lidata-md>
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<p>Let <var>audioTrack</var> be the first argument.</p>
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<p>If <var>audioTrack</var>’s <codeclass="idl"><adata-link-type="idl" href="https://w3c.github.io/mediacapture-main/#dom-mediastreamtrack-kind" id="ref-for-dom-mediastreamtrack-kind">kind</a></code> attribute is NOT <code>"audio"</code>, throw an <codeclass="idl"><adata-link-type="idl" href="https://webidl.spec.whatwg.org/#invalidstateerror" id="ref-for-invalidstateerror">InvalidStateError</a></code> and abort these steps.</p>
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<p>If <var>audioTrack</var>’s <codeclass="idl"><adata-link-type="idl" href="https://w3c.github.io/mediacapture-main/#dom-mediastreamtrack-kind" id="ref-for-dom-mediastreamtrack-kind">kind</a></code> attribute is NOT <code>"audio"</code>,
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throw an <codeclass="idl"><adata-link-type="idl" href="https://webidl.spec.whatwg.org/#invalidstateerror" id="ref-for-invalidstateerror">InvalidStateError</a></code> and abort these steps.</p>
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<lidata-md>
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<p>If <var>audioTrack</var>’s <codeclass="idl"><adata-link-type="idl" href="https://w3c.github.io/mediacapture-main/#dom-mediastreamtrack-readystate" id="ref-for-dom-mediastreamtrack-readystate">readyState</a></code> attribute is NOT <code>"live"</code>, throw an <codeclass="idl"><adata-link-type="idl" href="https://webidl.spec.whatwg.org/#invalidstateerror" id="ref-for-invalidstateerror①">InvalidStateError</a></code> and abort these steps.</p>
<dd>The installOnDevice method returns a Promise that resolves to a boolean indicating whether the installation of on-device speech recognition for a given BCP 47 language tag initiated successfully. <adata-link-type="biblio" href="#biblio-bcp47" title="Tags for Identifying Languages">[BCP47]</a>
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</dl>
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<p>When the <dfnclass="dfn-paneled" data-dfn-type="dfn" data-noexportid="start-session-algorithm">start session algorithm</dfn> with <var>requestMicrophonePermission</var> is invoked, the user agent MUST run the following steps: </p>
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<p>When the <dfnclass="dfn-paneled" data-dfn-type="dfn" data-noexportid="start-session-algorithm">start session algorithm</dfn> with <var>requestMicrophonePermission</var> is invoked, the user agent MUST run the
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following steps:</p>
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<lidata-md>
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<p>If the <adata-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#current-settings-object" id="ref-for-current-settings-object">current settings object</a>’s <adata-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global">relevant global object</a>’s <adata-link-type="dfn" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#concept-document-window" id="ref-for-concept-document-window">associated Document</a> is NOT <adata-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#fully-active" id="ref-for-fully-active">fully active</a>, throw an <codeclass="idl"><adata-link-type="idl" href="https://webidl.spec.whatwg.org/#invalidstateerror" id="ref-for-invalidstateerror②">InvalidStateError</a></code> and abort these steps.</p>
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<lidata-md>
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<p>If <codeclass="idl"><adata-link-type="idl" href="#dom-speechrecognition-started-slot" id="ref-for-dom-speechrecognition-started-slot">[[started]]</a></code> is <code>true</code> and no <aclass="idl-code" data-link-type="event" href="#eventdef-speechrecognition-error" id="ref-for-eventdef-speechrecognition-error②">error</a> or <aclass="idl-code" data-link-type="event" href="#eventdef-speechrecognition-end" id="ref-for-eventdef-speechrecognition-end③">end</a> event has fired, throw an <codeclass="idl"><adata-link-type="idl" href="https://webidl.spec.whatwg.org/#invalidstateerror" id="ref-for-invalidstateerror③">InvalidStateError</a></code> and abort these steps.</p>
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<p>If <codeclass="idl"><adata-link-type="idl" href="#dom-speechrecognition-started-slot" id="ref-for-dom-speechrecognition-started-slot">[[started]]</a></code> is <code>true</code> and no <aclass="idl-code" data-link-type="event" href="#eventdef-speechrecognition-error" id="ref-for-eventdef-speechrecognition-error②">error</a> or <aclass="idl-code" data-link-type="event" href="#eventdef-speechrecognition-end" id="ref-for-eventdef-speechrecognition-end③">end</a> event
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have fired, throw an <codeclass="idl"><adata-link-type="idl" href="https://webidl.spec.whatwg.org/#invalidstateerror" id="ref-for-invalidstateerror③">InvalidStateError</a></code> and abort these steps.</p>
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<lidata-md>
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<p>Set <codeclass="idl"><adata-link-type="idl" href="#dom-speechrecognition-started-slot" id="ref-for-dom-speechrecognition-started-slot①">[[started]]</a></code> to <code>true</code>.</p>
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<lidata-md>
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<p>If <var>requestMicrophonePermission</var> is <code>true</code> and <adata-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-request-permission-to-use" id="ref-for-dfn-request-permission-to-use">request permission to use</a> "<code>microphone</code>" is <adata-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-denied" id="ref-for-dfn-denied">"denied"</a>, abort these steps.</p>
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<p>If <var>requestMicrophonePermission</var> is <code>true</code> and <adata-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-request-permission-to-use" id="ref-for-dfn-request-permission-to-use">request permission to use</a> "<code>microphone</code>" is <adata-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-denied" id="ref-for-dfn-denied">"denied"</a>, abort
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these steps.</p>
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<lidata-md>
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<p>Once the system is successfully listening to the recognition, <adata-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-event-fire" id="ref-for-concept-event-fire">fire an event</a> named <aclass="idl-code" data-link-type="event" href="#eventdef-speechrecognition-start" id="ref-for-eventdef-speechrecognition-start">start</a> at <adata-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this">this</a>.</p>
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<p>Once the system is successfully listening to the recognition, queue a task to <adata-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-event-fire" id="ref-for-concept-event-fire">fire an event</a> named <aclass="idl-code" data-link-type="event" href="#eventdef-speechrecognition-start" id="ref-for-eventdef-speechrecognition-start">start</a> at <adata-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this">this</a>.</p>
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