How can silence be added using AZURE text to speech?

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Silence can be added using AZURE text to speech by using the audio tag in the SSML (Speech Synthesis Markup Language) code. The audio tag syntax is as follows:

<break time="xms"/>

where x is the length of silence in milliseconds. For example, <break time="2000ms"/> will add a 2-second pause in the speech output.

To implement this in AZURE text to speech, follow these steps:

1. Construct the SSML code with appropriate <speak> and <voice> tags as required.
2. Insert the audio tag with the desired length of silence in milliseconds.
3. Use the synthesize API to convert the SSML to audio.

Here's an example of how to add a 2-second pause in AZURE text to speech output:

<speak version="1.0" xmlns="https://www.w3.org/2001/10/synthesis" xml:lang="en-US">
  <voice name="en-US-JennyNeural">
    Hello, this is an example of how to add a pause using Azure text to speech.
    <break time="2000ms" />
    Did you hear that pause?
  </voice>
</speak>

When this SSML code is passed to the synthesize API in AZURE text to speech, the output will contain a 2-second silence after the phrase "this is an example of how to add a pause using Azure text to speech."