Speech Synthesis Markup Language

<p>Speech Synthesis Markup Language (SSML) is an <a href="/facts/XML/clNgUfWk">XML</a>-based <a href="/facts/Markup_language/WwhlNVIu">markup language</a> for <a href="/facts/Speech_synthesis/ceTczTv9">speech synthesis</a> applications. It is a recommendation of the <a href="/facts/W3C/lGWmhF6M">W3C</a>'s <a href="/facts/Voice_browser/Sp2t4ohG">Voice Browser</a> Working Group. SSML is often embedded in <a href="/facts/VoiceXML/jPrJ1goR">VoiceXML</a> scripts to drive interactive telephony systems. However, it also may be used alone, such as for creating audio books. For desktop applications, other markup languages are popular, including <a href="/facts/Apple_Inc./oTJYta3k">Apple's</a> embedded speech commands, and <a href="/facts/Microsoft/nGIDDXdx">Microsoft's</a> <a href="/facts/Speech_Application_Programming_Interface/vytkjp5K">SAPI</a> <a href="/facts/Text_to_speech/ceTczTv9">Text to speech</a> (TTS) markup, also an XML language.  It is also used to produce sounds via Azure Cognitive Services' Text to Speech API or when writing third-party skills for <a href="/facts/Google_Assistant/ahQuotGz">Google Assistant</a> or <a href="/facts/Amazon_Alexa/deexPRqM">Amazon Alexa</a>.
</p><p>SSML is based on the <a href="/facts/Java_Speech_Markup_Language/jKqV4bTY">Java Speech Markup Language</a> (JSML) developed by <a href="/facts/Sun_Microsystems/VJ9EzEFd">Sun Microsystems</a>, although the current recommendation was developed mostly by speech synthesis vendors. It covers virtually all aspects of synthesis, although some areas have been left unspecified, so each vendor accepts a different variant of the language. Also, in the absence of markup, the synthesizer is expected to do its own interpretation of the text.
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Speech Synthesis Markup Language open-in-new

Speech Synthesis Markup Language