# Testing modifications to the sound engine

**URL:** <https://forum.makecode.com/t/testing-modifications-to-the-sound-engine/3351>\
**Category:** Help\
**Created:** [September 4, 2020, 4:22am UTC](https://forum.makecode.com/t/testing-modifications-to-the-sound-engine/3351 "2020-09-04T04:22:34Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![kwx](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/kwx/32/1545_2.png) [@kwx](https://forum.makecode.com/u/kwx)\
**Post date:** [October 5, 2020, 7:07am UTC](https://forum.makecode.com/t/testing-modifications-to-the-sound-engine/3351/17 "2020-10-05T07:07:42Z")

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Here’s my attempt at making an extension for using the sound effects from Blocks - I’m new to this, so not sure about best practices.

> **[klausw3/pxt-sound-effects](https://github.com/klausw3/pxt-sound-effects)**
>
> MakeCode extension for sound effects. Contribute to klausw3/pxt-sound-effects development by creating an account on GitHub.

The following demo uses just waveforms available in the stable version:

> **[SoundEffects basic test](https://arcade.makecode.com/16695-67870-01625-09215)**
>
> Made with ❤️ in Microsoft MakeCode Arcade.

 ![Screenshot from 2020-10-05 00-04-15](https://us1.discourse-cdn.com/flex020/uploads/makecode/original/2X/a/ac275d89614cecfae47aa6f7983fa25d37aaaf8a.png)

And here’s a demo using the new waveforms, this needs the beta editor: [https://arcade.makecode.com/beta#pub:\_exXFsgWdKPcA](https://arcade.makecode.com/beta#pub:_exXFsgWdKPcA)

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