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  4. Telephony Alerting System Installation and Configuration Guide
  5. Configure the TAS plug-in
  6. Text-to-speech
  7. TTS audio parameters

TTS audio parameters

Plug-in Key
: 
nds.textToSpeech.audioParams
Key:
 
<audioParams/>
Parameters:
  • speed
  • volume
  • pitch
  • gender
The TTS audio parameters control speech speed, volume, and pitch and by default are set to the highest quality at the account level.
If the customer wants to slow the speech speed an operator can change the speech speed value based on the customer’s requirement.
By default, 
Volume
 and 
pitch
 are set to ‘100’. You should not change the value for volume or pitch without performing the necessary testing. The gender of the speaking voice is set with 
gender
.
Example
<audioParams speed="100" volume="100" pitch="100" gender= “female” />
For example, you might need to set all voices to female except for French, and a slower speed for English-United States, as shown in the following sample configuration:
<audioParams speed='100' pitch='100' gender = 'female'>
 <localizedConfigurations>
  <localizedAudioParams locale = 'en-US' speed='90' />
  <localizedAudioParams locale = 'fr-FR' gender = 'male' />
 </localizedConfigurations>
</audioParams>