> ## Documentation Index
> Fetch the complete documentation index at: https://docs.teamfollowup.ai/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Use the public API base URL: https://api.teamfollowup.ai/api.
> Authenticate public API requests with Authorization: Bearer YOUR_API_KEY.
> Use product-owned terms: agents, calls, campaigns, contacts, phone numbers, billing, and configuration.

# How your agent sounds

> Pick a voice, set the pace, choose the language, and decide the background. Small choices that make the agent sound human.

The words matter, but so does the delivery. The same sentence can sound warm or
robotic depending on the voice and the pacing. Here's what you get to choose.

## The voice

You pick a voice from a catalogue, the way you'd cast a person for a role. Each
voice has its own sound and feel. Try a few out loud before you settle. The right
voice depends on your audience and your brand, there's no single "best" one.

## Speaking speed

This is how fast the agent talks. Normal speed is `1`. Lower is slower and calmer,
higher is quicker.

* **Slow down** for older audiences, or anything with numbers and details.
* **Speed up** only a little, if at all. Fast talkers are hard to trust.

<Tip>
  A little secret: **1.1** tends to sound the most human. We can't fully explain
  why. It just does.
</Tip>

## Expressiveness

This controls how much the voice varies its tone, its "expressiveness." A little
variation sounds alive. Too much sounds theatrical. A middle setting is usually
the safe, natural choice.

## Language

You set the language the agent listens and speaks in, like US English. You can
even give it a list of languages, and it will handle callers in more than one.

## Background sound

By default the call is clean and quiet. If you want, you can add a light
background, like a soft call center or coffee shop ambience, so it feels less
sterile. This is optional. When in doubt, leave it off.

## Noise handling

Real phone calls are noisy. There's a setting that cleans up background noise so
the agent hears the caller clearly. If people are calling from cars and cafes,
turn on stronger noise handling. If your calls are usually clean, you can keep it
light.

## Do / Don't

* **Do** listen to the agent out loud before going live. Your ear will catch
  things the settings page won't.
* **Do** match the pace to your audience, slower for detail heavy calls.
* **Don't** crank expressiveness to the top. Natural beats dramatic.
* **Don't** add a busy background sound. If it's distracting to you, it's
  distracting to the caller.