Long TTS prompt does not play when Nuance is configured to MRCP V2 (TLS)

Last Updated : Dec 07, 2012 |

There is a known issue with initializing the TTS resource for a long TTS prompt when you configure Nuance server with MRCP V2 (TLS).

Proposed Solution

To resolve this, perform one of the following actions:

  • Set the TTS parameter that is, Prosody Volume or Prosody Rate on the Change Application page, to an audible volume range that is greater than zero and less than 100.

    Note:

    You must set the Prosody Volume and Prosody Rate values to 50.

  • Initialize short prompt first.

Setting the Prosody Volume and Prosody Rate values to 50 ensures that:

  • The TTS resource is properly initialized for the request.

  • All prompts from different speech server with different default volume settings, that include prerecord prompts, are played at the same volume.