Is there a way to control how loud the background sound is relative to the assistant voice? I'm using a custom background sound configured through a URL.

Hey! You can definitely control how loud the background sound is compared to the assistant voice. The trick is adjusting the audio mix so your assistant stays clear while the background sets the mood. Can you share how you’ve currently configured the URL and playback? I can then suggest the exact approach to get the balance just right. @dudleykong

Sure. I've just specified a URL here: https://docs.vapi.ai/api-reference/assistants/create#response.body.backgroundSound The mp3 is hosted on our server.

With this setup, the assistant will play your MP3 as the background, but the volume relative to the voice needs some tweaking. You can adjust it in the audio mix so your assistant stays clear and natural. Do you want me to guide you on the exact approach to balance them properly? @dudleykong

No, you can't control the volume programmatically, but there's an easier option: you can use any editing tool to reduce the volume of the track if needed. There are a lot of free tools that will allow you to do it.