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Plum DEV Documentation
Overview
Developer Reference
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Audio Formats and Prompts
Grammars and Speech Recognition
Available ASR Engines
TTS Engine Characteristics
Amazon Polly TTS Engine
AT&T Natural Voices
Cepstral Engine
RealSpeak Engine
Vocalizer 7
Data Exchange
Logging
Caching
Root Documents
VoiceXML
Tags
Properties
Application and Session Variables
VoiceXML Resources
Plum DEV Guide
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Outbound Calling Guide
Call Reporting
Analytics
VoiceTrends
Debugging
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Saved URLs
Voice Biometrics
Call Routing
Data Security
SMS Guide
Single Sign On
Plum DEV APIs
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SMS API
Call Logs API
Call Scheduling and Pacing API
Transcription API
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TTS Engine Characteristics

The Voice tag supports the following attributes, although not every TTS engine supports every attribute:
  • <gender>
  • <age>
  • <name>
  • <speak>
  • <voice>
  • <xml:lang>
  • <break>
  • <paragraph>
  • <phoneme>
  • <prosody>
  • <say-as>
  • <sentence>
Each TTS engine has a dedicated page that describes which attributes it supports and how to use them.
  • ​Amazon Polly​
  • ​AT&T Natural Voices​
  • ​Cepstral Engine​
  • ​RealSpeak Engine​
  • ​Vocalizer 7 (Beta*)
* Trying our beta features?
Please share your feedback with us via email at [email protected].
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Amazon Polly TTS Engine
Last modified 1yr ago