Description Supported channels Flow types Properties Use an Amazon Lex V2 bot with Amazon Connect Configuration tips Configured block Scenarios

Flow block in Amazon Connect: Set voice

This topic defines the flow block for setting the text-to-speech (TTS) language and voice to use for the contact flow.

Description

Sets the text-to-speech (TTS) language and voice to use for the contact flow.
The default voice is configured to Joanna (Conversational speaking style).
You can choose Override speaking style to make it and other voices Neural Voices. Neural voices make automated conversations sound more lifelike by improving the pitch, inflection, intonation, and tempo.

For a list of supported neural voices, see Neural Voices in the Amazon Polly Developer Guide.
After this block is run, any TTS invocation resolves to the neural or standard voice selected.
If this block is triggered during a chat conversation, the contact goes down the Success branch. It has no effect on the chat experience.

Supported channels

The following table lists how this block routes a contact who is using the specified channel.

Channel	Supported?
Voice	Yes
Chat	No - Success branch
Task	No - Success branch

Flow types

You can use this block in the following flow types:

All flows

Properties

The following image shows the Properties page of the Set voice block. It is configured for English, the voice is Joanna, and the speech style is Conversational.

Tip

For voices that support only neural speaking styles but not standard, the Override speaking style is automatically selected. You do not have the option to clear it.

You can also set language, voice, engine and style dynamically. There are a few configurations that must be followed when modifying the block:

If the language is selected dynamically, the voice must also be selected dynamically.
If the voice is selected dynamically and the speaking style is overridden, then the engine and style must be selected dynamically.
If the voice or engine are invalid, or the selected voice doesn’t support the selected engine, the error branch will be taken.
Note
- Language code is only passed into a flow action if Set language attribute is selected. Therefore, invalid language codes will not take the error branch in this block but they may result in erroneous behavior when used with Lex V2 bots.
- f a play prompt is added after the Error branch, the voice used for it will default to Joanna/standard.

Use an Amazon Lex V2 bot with Amazon Connect

If you're using an Amazon Lex V2 bot, your language attribute in Amazon Connect must match the language model used to build your Lex bot. This is different than Amazon Lex (Classic).

If you build an Amazon Lex V2 bot with a different language model—for example, en_AU, fr_FR, es_ES, and more—under Voice, choose a voice that corresponds to that language, and then must choose Set language attribute, as shown in the following image.
If you're not using an en-US voice with an Amazon Lex V2 bot and don't choose Set language attribute, the Get customer input block results in an error.
For bots with multiple languages (for example, en_AU and en_GB) choose Set language attribute for one of the languages, as shown in the following image.