---
title: "Time Stretch"
description: "Local-first visual environment for building and running AI workflows. Build agents visually, deploy anywhere, privacy by design."
canonical: https://docs.nodetool.ai/nodes/lib/audio/timestretch
markdown: https://docs.nodetool.ai/nodes/lib/audio/timestretch.md
product: NodeTool
source: https://github.com/nodetool-ai/nodetool/blob/main/docs/nodes/lib/audio/timestretch.md
---

# Time Stretch

**Type:** `lib.audio.TimeStretch`

**Namespace:** `lib.audio`

## Description

Changes the speed of an audio file without altering its pitch.
    audio, transform, time

    Use cases:
    - Adjust audio duration to fit video length
    - Create slow-motion or fast-motion audio effects
    - Synchronize audio tracks of different lengths

## Properties

| Property | Type | Description | Default |
|----------|------|-------------|---------|
| audio | `audio` | The audio file to process. | `{"type":"audio","uri":"","asset_id":null,"data"...` |
| rate | `float` | Time stretch factor. Values > 1 speed up, < 1 slow down. | `1` |

## Outputs

| Output | Type | Description |
|--------|------|-------------|
| output | `audio` |  |

## Related Nodes

Browse other nodes in the [lib.audio](./) namespace.