# "FFT Dynamic Range" commands in shortcuts change window function

**URL:** <https://forums.steinberg.net/t/fft-dynamic-range-commands-in-shortcuts-change-window-function/1041153>\
**Category:** SpectraLayers\
**Tags:** issue\
**Created:** [September 12, 2026, 7:39pm UTC](https://forums.steinberg.net/t/fft-dynamic-range-commands-in-shortcuts-change-window-function/1041153 "2026-09-12T19:39:06Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jamiehardt](https://avatars.discourse-cdn.com/v4/letter/j/94ad74/32.png) [@jamiehardt](https://forums.steinberg.net/u/jamiehardt)\
**Post date:** [September 12, 2026, 7:39pm UTC](https://forums.steinberg.net/t/fft-dynamic-range-commands-in-shortcuts-change-window-function/1041153/1 "2026-09-12T19:39:06Z")

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When I assign keys to “Decrease/Increase FFT Window Window Dynamic Range” this doesn’t change the brightness curve, as I would expect, but causes the FFT window to tick through FFT window functions.

(If this isn’t an error, it would be nice to have a shortcut command to increase/decrease the FFT curve)

SL 13.0.20 build 454 (arm64)

Apple M3 Pro, macOS 26.6.2 (25G83)

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**Author:** ![Robin\_Lobel](https://avatars.discourse-cdn.com/v4/letter/r/d26b3c/32.png) [@Robin\_Lobel](https://forums.steinberg.net/u/Robin_Lobel)\
**Post date:** [September 19, 2026, 12:55pm UTC](https://forums.steinberg.net/t/fft-dynamic-range-commands-in-shortcuts-change-window-function/1041153/2 "2026-09-19T12:55:32Z")

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This refers to something else, it refers to a FFT parameter, not the amplitude of the spectrogram display.

What you’re looking for is shortcuts for this:

 ![image](https://europe1.discourse-cdn.com/steinberg/original/4X/a/a/a/aaa0b2972e1ae8b601362c74bb9ee3daaa4d82df.png)

Look for this:

 ![image](https://europe1.discourse-cdn.com/steinberg/original/4X/7/7/3/7739a9973ebca6eb4604b1eb66b896c387e170d6.png)

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<div class="post-metadata">

**Author:** ![jamiehardt](https://avatars.discourse-cdn.com/v4/letter/j/94ad74/32.png) [@jamiehardt](https://forums.steinberg.net/u/jamiehardt)\
**Post date:** [September 19, 2026, 8:43pm UTC](https://forums.steinberg.net/t/fft-dynamic-range-commands-in-shortcuts-change-window-function/1041153/3 "2026-09-19T20:43:31Z")

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I saw that, it _would_ be nice if there was a shortcuct for adjusting the curve, I’ve just mapped all of these to buttons on my stream deck because I’m adjusting them so much.

Would there be a way for the program to pick these parameters automatically for the best appearance?

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<div class="post-metadata">

**Author:** ![Robin\_Lobel](https://avatars.discourse-cdn.com/v4/letter/r/d26b3c/32.png) [@Robin\_Lobel](https://forums.steinberg.net/u/Robin_Lobel)\
**Post date:** [September 20, 2026, 9:26am UTC](https://forums.steinberg.net/t/fft-dynamic-range-commands-in-shortcuts-change-window-function/1041153/4 "2026-09-20T09:26:12Z")

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You’re right it’s missing shortcuts for Brightness Curve adjustment, I’ll add this to 13.0.30.

As for automatic adjustments of the amplitude and FFT size, I possibly have some plans for SL 14…

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<div class="post-metadata">

**Author:** ![jamiehardt](https://avatars.discourse-cdn.com/v4/letter/j/94ad74/32.png) [@jamiehardt](https://forums.steinberg.net/u/jamiehardt)\
**Post date:** [September 21, 2026, 6:03pm UTC](https://forums.steinberg.net/t/fft-dynamic-range-commands-in-shortcuts-change-window-function/1041153/5 "2026-09-21T18:03:40Z")

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I see that’s in x457, looking forward to trying it out.