Then, you would add this instance to a queue, which tells the browser what to speak and when.īelow I have wrapped all of this in a function for us to call, named speak, with the text we want spoken as a parameter. Then, you would specify the text to be spoken. Google Chrome is the only browser that currently implements the Web Speech API. First, you would create a new instance of the SpeechSynthesisUtterance interface.
#Web speech api google chrome code
Let’s look at some of the code needed to make this happen. you could run some lovely functions and the device would speak the words to the user. If your website has some textual content - whether body copy, forms inputs, alt tags, etc. To start, let’s look at the speech synthesis part, the bit that speaks to you. Image credit: Sebastian Schöld Speech Synthesis Checking the specification and testing thoroughly before releasing code are always wise. The likelihood that usage will differ slightly from the code snippets in this article is high. In this article, we’ll look at the technology and its proposed usage, as well as some great examples of how it can be used to enhance the user experience.ĭisclaimer: This technology is pretty cutting-edge, and the specification is currently with the W3C as an “unofficial editor’s draft” (as of 6 June 2014). It’s still early days, but this functionality is set to open a whole array of use cases. It enables websites and web apps not only to speak to you, but to listen, too. Using the Array.find() method I select my voice of choice, gracefully falling back to the browser’s default.It’s an exciting time for web APIs, and one to watch out for is the Web Speech API. Internally, it uses the Web Speech API of Chrome that is supported in all the newer release of Chrome browser including Google Chrome on Android. The function above sets up our SpeechSynthesisUtterance instance once the voiceschanged event is fired. Dictation uses Chromes Local Storage to automatically save the transcriptions and thus youll never lose your work. It is unknown whether this is a limitation or a bug. If the utterance’s text changes, the limit is reset. Warning: While using Google Chrome’s custom voice service, each utterance instance has a character limit of 200-300. They also require an internet connection.
Generally speaking, these voices sound much better, but you are sacrificing privacy for quality. Not every browser provides custom voice services, both Google Chrome and Microsoft Edge do.
This list contains both native voices and browser-specific ones. The getVoices() method will return every loaded voice.
They will, however, use the browser’s default voice with its default settings. Utterances added to the queue before this event is fired will still work. Once done, it will fire a voiceschanged event letting us know that everything is ready to go. We’re going to walk through a three-step process to create a page that speaks the same text in multiple languages. When a website is fully loaded, the speechSynthesis API will fetch all available voices asynchronously. As of July 2015, Chrome is the only browser that implemented that specification, using Googles speech recognition engines. Chrome loads a set of voices remotely, so if your operating system does not have international voices installed, just use Chrome.
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