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Configure Amazon Nova Sonic Speech-to-Speech - Amazon Connect Customer
Part 1: Configure Speech-to-Speech for a Bot LocalePart 2: Configure a Nova Sonic Compatible Voice in a Flow

Configure Amazon Nova Sonic Speech-to-Speech

You can configure Amazon Nova Sonic as a Speech-to-Speech (S2S) model for a Conversational AI bot locale in Amazon Connect. With Speech-to-Speech, the bot converts customer speech directly into natural, expressive speech responses using Nova Sonic. Amazon Connect continues to manage orchestration, intents, and flows.

Part 1: Configure Speech-to-Speech for a Bot Locale

Prerequisites

  • A Conversational AI bot exists in Amazon Connect.

  • The locale you want to use with Nova Sonic is already created.

  • You have permissions to edit the bot configuration and build the language.

Step 1: Open the Speech model configuration

  1. Sign in to the Amazon Connect admin website.

  2. Choose Bots, then select the Configuration tab.

  3. Select the locale you want to configure.

  4. In the Speech model section, choose Edit.

Amazon Nova Sonic Speech-to-Speech overview

Step 2: Select Speech-to-Speech

In the Speech model modal, open the Model type dropdown and choose Speech-to-Speech.

Model type dropdown showing Speech-to-Speech option

Step 3: Choose Amazon Nova Sonic

After selecting Speech-to-Speech, open Voice provider and select Amazon Nova Sonic. Then choose Confirm.

Model type dropdown showing Speech-to-Speech option

Step 4: Review Speech model status

The Speech model card now shows Speech-to-Speech: Amazon Nova Sonic and displays a warning to select a Nova Sonic compatible voice in your Set voice block.

Speech model modal with Amazon Nova Sonic selected

Step 5: Build and activate the locale

If the locale shows Unbuilt changes, choose Build language. The new STT settings become active after a successful build.

Part 2: Configure a Nova Sonic Compatible Voice in a Flow

After enabling Nova Sonic at the bot level, you must configure a matching Nova Sonic–compatible expressive voice in your flow using the Set voice block.

Supported Nova Sonic Voices (Launch Set)

  • Matthew (en-US, Masculine)

  • Amy (en-GB, Feminine)

  • Olivia (en-AU, Feminine)

  • Lupe (es-US, Feminine)

Step 1: Add or open a Set voice block

  1. Open the target flow in the Flow designer.

  2. Search for Set voice in the block library.

  3. Drag a Set voice block onto the canvas or open an existing one.

Speech model card showing Nova Sonic configuration

Step 2: Select Override and Generative speaking style

In Other settings, choose Override speaking style and select Generative to enable Nova Sonic expressive output.

Set voice block configuration

Step 3: Select a Nova Sonic compatible voice

  1. Set Voice provider to Amazon.

  2. Under Language, select the locale that corresponds to the voice you want.

  3. Under Voice, select one of the Nova Sonic–compatible voices.

Override speaking style set to Generative

Step 4: Review selected voice

The Set voice block now shows the selected voice and style, such as Voice: Matthew (Generative).

Set necessary fields for Sonic

Step 5: Save and publish the flow

Choose Save, then Publish to activate the configuration.