> For the complete documentation index, see [llms.txt](https://docs.acestudio.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.acestudio.ai/ai-tools/doubles.md).
# Doubles
Use doubles to create a wider and fuller sound.
## What Is Doubles
In vocal producing, we usually like to record two more takes on the sides panned anywhere from 50%-100% with a lead vocal or harmony vocal for a wider dimension and fullness.
{% hint style="info" %}
**Why not duplicate?**
If you just duplicate, the contents will be exactly the same to the original one. In this case, AI will generate the same audio result for the duplicated one, this would cause phase issues.
{% endhint %}
## Create Doubles
Right click on a MIDI clip or the track head, and select “Create vocal doubles” in the right-click menu to open Doubles panel.
In the vocal double panel, you can
* Set up the similarity with the original content. 100% represents no changes to the original one.
* The default humanization process includes the duration and position of notes and the duration of consonants
* 85% - 90% is good enough for regular needs.
* Wether to apply random effects to the user pitch.
* This will only take effect on the pitch curves that you draw. The AI-generated default pitch will not be changed by selecting this check box.
* Wether to apply random effects to the VoiceMix.
* If you haven’t blended voices on this track, you don’t need to check this box.
---
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