Voices
Guide to customizing the voice of the Empathic Voice Interface (EVI).
The Empathic Voice Interface (EVI) can be configured with any of our 7 base voices. You can also customize these voices by adjusting specific attributes. This guide explains each attribute and provides a tutorial for creating a custom voice. Visit the Playground to test the base voices.
The custom voices feature is experimental and under active development. Regular updates will focus on improving stability and expanding attribute options.
Voice attributes
The following attributes can be modified to personalize any of the base voices:
Each voice attribute can be adjusted relative to the base voice’s characteristics. Values for gender, huskiness, nasality, and pitch range from -100
to 100
, with 0
as the default.
Setting all attributes to their default values will keep the base voice unchanged.
Crafting custom voices
See instructions below for customizing a voice through the Portal.
Create a new custom voice
Enter a name for your custom voice and select a base voice. Then, adjust the attributes.
Test your custom voice
As you make tweaks to the attributes, sample audio can be generated by clicking the ”▶” button in the Voice sample section at the bottom of the form.
Use your custom voice
The newly created voice can now be deployed. From the Voices page, click Use to create an EVI configuration with it.
When creating an EVI configuration, choose Custom voice and press the + Select button. Then, press Select existing custom voice… and confirm the custom voice you would like to use.