---
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/openclaw
---
# How to Modify Voice Pitch with OpenClaw

OpenClaw applies pitch modifications at scale with surgical precision. Define target pitch parameters once and batch-process entire libraries of recordings with identical settings, ensuring perfect consistency across all output files. Structured output includes before-and-after frequency analysis data for quality verification.

## Setup

openclaw mcp add toolrouter -- npx -y toolrouter-mcp

## Steps

1. Connect ToolRouter: openclaw mcp add toolrouter -- npx -y toolrouter-mcp
2. Ask OpenClaw: "Adjust the pitch of this voice recording"
3. OpenClaw processes the modification
4. Fine-tune with additional adjustments if needed
5. Download the final version

## Example Prompt

```
Lower this voice recording by about 10% for a more mature, authoritative sound. Keep it sounding completely natural.
```

## Tips

- Start with small adjustments and increase if needed
- Preserve formant structure for natural-sounding results
- Process a test clip first to dial in the right amount before batching
