SpeechSynthesisUtterance.volume
The volume
property of the SpeechSynthesisUtterance
interface gets and sets the volume that the utterance will be spoken at.
If not set, the default value 1 will be used.
Value
A float that represents the volume value, between 0 (lowest) and 1 (highest.)
If SSML is used, this value will be overridden by prosody tags in the markup.
Examples
var synth = window.speechSynthesis;
var inputForm = document.querySelector('form');
var inputTxt = document.querySelector('input');
var voiceSelect = document.querySelector('select');
var voices = synth.getVoices();
...
inputForm.onsubmit = function(event) {
event.preventDefault();
var utterThis = new SpeechSynthesisUtterance(inputTxt.value);
var selectedOption = voiceSelect.selectedOptions[0].getAttribute('data-name');
for(i = 0; i < voices.length ; i++) {
if(voices[i].name === selectedOption) {
utterThis.voice = voices[i];
}
}
utterThis.volume = 0.5;
synth.speak(utterThis);
inputTxt.blur();
}
Specifications
Specification |
---|
Web Speech API # dom-speechsynthesisutterance-volume |
Browser compatibility
BCD tables only load in the browser