@Matthieu GARCIA
To add new voices like "Adina" and "Mademoiselle" via API, you would typically use the provider's API to configure and use these voices. However, since we are using playht as the provider and have set "Jennifer" as the voice, you would need to check if "Adina" and "Mademoiselle" are available voices within playht's offerings.
If they are available, you can set these voices by specifying their respective IDs or names in the API call. If you're looking to do this through VAPI, you would need to use the Assistant API to customize the voice settings accordingly.
If you provide me with the specific parameters or if you need assistance with the API call, I can guide you through the process. If "Adina" and "Mademoiselle" are not available in playht, you may need to look for these voices with another provider or check if there are similar alternatives within playht's voice options.