# My build lack of progress

**URL:** <https://lookmumnocomputer.discourse.group/t/my-build-lack-of-progress/1419>\
**Category:** Uncategorized\
**Created:** [July 12, 2020, 1:22am UTC](https://lookmumnocomputer.discourse.group/t/my-build-lack-of-progress/1419 "2020-07-12T01:22:33Z")\
**Posts on this page:** 1\
**Showing post:** 104

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**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\
**Post date:** [October 20, 2023, 5:33am UTC](https://lookmumnocomputer.discourse.group/t/my-build-lack-of-progress/1419/104 "2023-10-20T05:33:27Z")

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Still not building anything but I was doing some thinking about AC coupling, why it distorts the shape of square waves so much, and why it doesn’t matter much (at least for audio frequencies). And then I wrote up what I was thinking about.

![filt_fsq_sum](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/a/5/a5a3c5169d20d39e1d89e510c77050d01f1b45c2.png)

> **[AC coupled square waves are less than obvious](https://www.richholmes.xyz/analogoutput/2023-10-19_ac-coupled-square-waves-are-less-than-obvious/)**
>
> Wallpaper paste must be good for something

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