# Tags change a mp3 sample peak level?!

**URL:** https://community.mp3tag.de/t/tags-change-a-mp3-sample-peak-level/57521
**Category:** No Bugs
**Created:** [June 4, 2022, 9:58pm UTC](https://community.mp3tag.de/t/tags-change-a-mp3-sample-peak-level/57521 "2022-06-04T21:58:21Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![leonsk1978](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/l/e9c0ed/32.png) [@leonsk1978](https://community.mp3tag.de/u/leonsk1978)
#### Post date: [June 4, 2022, 9:58pm UTC](https://community.mp3tag.de/t/tags-change-a-mp3-sample-peak-level/57521/1 "2022-06-04T21:58:21Z")

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So just have a tagless mp3 that has a sample peak of 0db then add a tag to it & check both versions in a program like izotope rx9

it went from 0.00db to +0.72db!

Why are tags affecting sample peak levels?

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### Author: ![MotleyG](https://community.mp3tag.de/user_avatar/community.mp3tag.de/motleyg/32/440_2.png) [@MotleyG](https://community.mp3tag.de/u/MotleyG)
#### Post date: [June 4, 2022, 10:43pm UTC](https://community.mp3tag.de/t/tags-change-a-mp3-sample-peak-level/57521/2 "2022-06-04T22:43:34Z")

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Metadata has no impact on the audio.What if you run a new peak scan on the original file without adding the tags?

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### Author: ![leonsk1978](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/l/e9c0ed/32.png) [@leonsk1978](https://community.mp3tag.de/u/leonsk1978)
#### Post date: [June 4, 2022, 10:51pm UTC](https://community.mp3tag.de/t/tags-change-a-mp3-sample-peak-level/57521/3 "2022-06-04T22:51:23Z")

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Well it looks like it does, like i said tagless audio thats at 0db sample peak stays at that..

Once the tags are added theres a peak increase. I just tested at 0db so it was easier to see by how much

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### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [June 5, 2022, 4:43am UTC](https://community.mp3tag.de/t/tags-change-a-mp3-sample-peak-level/57521/4 "2022-06-05T04:43:21Z")

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Have you tried another program that knows how to deal with tagged files?  
It looks like your program interprets the tag data as audio data.

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### Author: ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [June 6, 2022, 1:08pm UTC](https://community.mp3tag.de/t/tags-change-a-mp3-sample-peak-level/57521/5 "2022-06-06T13:08:31Z")

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Moved to #bug-reports:no-bugs

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### Author: ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)
#### Post date: [July 6, 2022, 1:09pm UTC](https://community.mp3tag.de/t/tags-change-a-mp3-sample-peak-level/57521/6 "2022-07-06T13:09:02Z")

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