Speech Engines for Anywhere365

Introduction

There are multiple ​TextToSpeech engines that are currently available, only one SpeechProvider can be selected per UCC.

Each SpeechProvider can be configured with a SpeechPreferredVoiceName,

When you do not configure the SpeechPreferredVoiceName the UCC will look for an available voice based on the Culture configured in GlobalSettings.

When a speech provider can't initialize or is misconfigured the MicrosoftSpeechSythesizer will be used as fallback.

 

MicrosoftSpeechSynthesizer

The standard option this is the on-premises text to speech solution, using the Microsoft Speech Sythesizer with the installed voices on the Anywhere365 UCC server.

Setting	Value
SpeechProvider​	MicrosoftSpeechSynthesizer
SpeechPreferredVoiceName	Exampled: Microsoft Server Speech Text to Speech Voice (en-GB, Hazel)

 

MicrosoftCognitiveServices​

This speech provider uses the ​Azure cloud service* to generate text to speech audio files. This one offers better quality than the standard Microsoft Speech installed on the UCC server.

* Text to Speech is subject to additional costs and are billed on the used Azure subscription. For rates see https://azure.microsoft.com/en-us/pricing/details/cognitive-services/speech-services/ .

A Cognitive Services key can be obtained through the Azure Portal. Just add a "Cognitive Services" resource to your Azure Subscription and copy key 1 from the "Keys and Endpoint" section. Make sure to use correct endpoint addresses in the settings below when you choose to host the service in another region than westeurope.

Setting​	Description	Value
​SpeechMicrosoftCognitiveApiKey​	The api key for Microsoft Cognitive services. ​
​SpeechMicrosoftCognitiveApiEndpoint	The api endpoint for Microsoft Cognitive services.	Example:  https://westeurope.tts.speech.microsoft.com/cognitiveservices/v1
SpeechMicrosoftCognitiveApiAuthorizationEndpoint	The authorization endpoint for Microsoft Cognitive services.	Example:  https://westeurope.api.cognitive.microsoft.com/sts/v1.0/issueToken
SpeechProvider		MicrosoftCognitiveServices
​​SpeechPreferredVoiceName		Example: Microsoft Server Speech Text to Speech Voice (en-US, JessaNeural)

 

GoogleCloudTextToSpeech​

Google Cloud Text to Speech service is the one that offers the most comprehensive set of voices, a list of this you can find at https://cloud.google.com/text-to-speech/docs/voices.

For more information about their offering you can have a look here: https://cloud.google.com/speech-to-text​

For this plugin you have to configure two lists, GlobalSettings and the PluginSettings lis.

In the PluginSettings list you have to put in the Credentials Json from the Google service.

 

GlobalSettings

Setting	Value
SpeechProvider​	GoogleCloudTextToSpeechV1
SpeechPreferredVoiceName	Example: nl-NL-Wavenet-C

PluginSettings

Setting​	Scope​​	Value
GoogleAppCredentialsJson​	TextToSpeech	Json generation in Google Cloud.

 

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