---
title: ToolRouter — Agent Use Case Guide
description: Step-by-step guide for completing a task with a specific AI agent using ToolRouter.
url: https://toolrouter.com/tools/voice-transformer/use-cases/modify-voice-pitch/copilot
---
# How to Modify Voice Pitch with Copilot

Copilot handles pitch modification directly in your development environment, making it seamless for developers working on audio features. Adjust pitch on voice assets without switching tools, and immediately use the output in your application code. Copilot understands the technical context -- file formats, sample rates, and integration points.

## Setup

{"mcpServers":{"toolrouter":{"command":"npx","args":["-y","toolrouter-mcp"]}}}

## Steps

1. Add ToolRouter to Copilot MCP config
2. In Copilot Chat: "Lower the pitch of this voice recording slightly"
3. Copilot processes the pitch adjustment
4. Ask: "Apply the same adjustment to all files in this directory"
5. Download the processed files

## Example Prompt

```
Pitch down this narration recording for a deeper, more authoritative sound. Preserve natural speech timing.
```

## Tips

- Batch-process all recordings with the same pitch adjustment for consistency
- Useful for adjusting audio assets in game and app development
- Combine with other transformations for compound voice modifications
