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Amazon Polly converts text to lifelike speech using deep learning models. It offers standard neural voices and supports SSML for fine-grained control over speech output — ideal for telephony and IVR systems.

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Getting Started

Follow these steps to configure your provider:
1

Add AWS credentials to your vault

Navigate to Integration → Vault in the Rapida dashboard. Add your AWS Access Key ID and Secret Access Key. The IAM role needs AmazonPollyReadOnlyAccess or a scoped polly:SynthesizeSpeech permission.
2

Select AWS Polly as your TTS provider

When configuring your assistant, open Audio Settings and choose AWS as your Text-to-Speech provider.
3

Choose a voice and language

Polly offers 60+ voices across 30+ languages. Choose the voice that matches your assistant’s target language and persona.

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Voice Types

TypeDescription
NeuralHigher quality, more natural-sounding voices using a neural TTS engine
StandardConcatenative synthesis — lower cost, suitable for basic use cases
Neural voices are recommended for production voice assistants.
Voice IDLanguageGender
JoannaEnglish (US)Female
MatthewEnglish (US)Male
AmyEnglish (UK)Female
BrianEnglish (UK)Male
LéaFrenchFemale
LupeSpanish (US)Female

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SSML Support

Polly supports SSML tags for granular speech control: 
<speak>
  Welcome back, <emphasis level="strong">valued customer</emphasis>.
  Your appointment is scheduled for <say-as interpret-as="date" format="mdy">12/25/2025</say-as>.
  <break time="500ms"/>
  Is there anything else I can help you with?
</speak>

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Configuration Options

OptionDescription
RegionAWS region for Polly (e.g. us-east-1)
Voice IDPolly voice identifier
Engineneural or standard
Language codeBCP-47 language code (required for some bilingual voices)
Sample rateOutput audio sample rate (8000 or 16000 Hz for telephony)

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Notes

  • Neural voices are not available in all AWS regions. Check the Polly neural voice list.
  • For telephony use cases, set sample rate to 8000 Hz to match PSTN audio formats.
  • Pricing is per character synthesized. See AWS Polly pricing.