![]() Finally, use the omAuthorizationToken function to create an auth context using the token. In App.js you use getTokenOrRefresh in the functions for speech-to-text from a microphone, and from a file. It is reccommended to use 9 minutes as the expiry time to act as a buffer, so we set maxAge to 540 seconds. Tokens for the service expire after 10 minutes, so the sample uses the maxAge property of the cookie to act as a trigger for when a new token needs to be generated. Now, all of these functionalities are merged into Speech Services, and Microsoft recommends migrating from the old APIs to this new one. Historically, there were many Speech APIs and some of them had the Bing branding, for example, the Bing Speech API. ![]() Since we need both the token and its corresponding region later, the cookie is stored in the format token:region and upon retrieval is spliced into each value. It does three main things Speech-to-Text (STT), Text-to-Speech (TTS) and Speech Translation. If there is no existing cookie for a token, it makes the call to /api/get-speech-token to fetch a new one. It first checks to see if there is an existing cookie, and in that case it returns the token without hitting the Express back-end. Make sure you select a neural voice to get the best quality. Step 1: Create synthesizer First, create the synthesizer with the selected language and voices. The following steps with the JavaScript code sample provide you the basic process to implement the read-aloud. ![]() It converts a short spoken audio (no longer than 15s), for example. This function uses the universal-cookie library to store and retrieve the token from local storage. In this design, the client directly interacts with Azure TTS using the Speech SDK. The Microsoft Speech API supports both Speech to Text and Text to Speech conversion. After reviewing all the text to speech APIs, we found these 10 APIs to be the very best and worth mentioning: IBM Watson API Rev.ai API Speechmatics API Google Speech-to-text API Robomatic.ai API Amazon Polly API Voicepods API Dialog Flow API Microsoft Azure Cognitive Services API Ispeech API Top 10 Best Text to Speech APIs 1.
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