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Overview

Keyphrase Boosting improves ASR recognition of domain-specific terms like product names, locations, or technical jargon.

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How it works

Add keyphrases to bias the ASR model toward recognizing specific words. Configure your LLM in agent settings.

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Getting started

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Configuring Keyphrase Boosting

  1. Access the Speech Recognition page: Navigate to the Speech Recognition section.
  2. Manage keyphrases:
    • In the Keyphrase Boosting tab, add, edit, or remove keyphrases.
    • Use the Keyphrase column to input domain-specific terms.
  3. Set bias strength:
    • Adjust the bias strength for each keyphrase using the slider.
    • Options range from Default (moderate priority) to Maximum (high priority).
  4. Save changes: Once configured, the updated keyphrases will be applied immediately to improve ASR recognition.

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Bias strength configuration

  • Default: Balances recognition accuracy with overall ASR performance.
  • Maximum: Prioritizes keyphrases for improved accuracy but may impact general performance.
Important: When both global and local biasing are applied, local settings take precedence.

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Diacritics

If your agent operates in a language that uses diacritics — such as č, ć, š, ž, đ — additional configuration may be required. These characters are common in languages like Croatian, Serbian, Bosnian, Slovak, Czech, Slovenian, and others. Some ASR models can misinterpret these letters, reducing accuracy for names and other proper nouns.