Autoplaying a speech on page load will throw an error.įind more about autoplay policies on the web.Text to Speech (TTS) services convert text into spoken word audio. To prevent such autoplay behavior, it is now required to have some user interaction before speech synthesis API will work. Some sites start a speech upon the page being loaded. SpeechSynthesis API is available in all modern browsers - Firefox, Chrome, Edge & Safari. Let utter = new SpeechSynthesisUtterance() Javascript Code // new SpeechSynthesisUtterance object Here are the complete APIs for the SpeechSynthesisUtterance object. onboundary : Fired when speech reaches a word or sentence boundary.
onstart : Fired when speech has begun to be spoken.In addition there are several events that are fired along the way of a speech, some of them are : volume : Volume of the speech (default 1).rate : Speed at which speech will be spoken (default 1).pitch : Pitch of the speech (default 1).A voice can also be set from one of the voices returned by () method. By default this set to the most suitable voice for the given language. By default this is set to browser language. This object contains properties that affect various factors defining a speech : let utter = new SpeechSynthesisUtterance() Whenever you want a speech to be spoken, you will need to create a SpeechSynthesisUtterance object. Here are the complete APIs for the SpeechSynthesis object. Each voice has properties like the name, language etc. GetVoices() : This method will give a list of available voices that can be played. This speech will be spoken after all speeches in the queue before it have been spoken. speak() : This method will add a speech to a queue called utterance queue.The important methods defined in it are : This is exposed through the global window.speechSynthesis object. SpeechSynthesis object is a part of the Web Speech API, that performs text to speech service in the browser.
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