# Three EQ with all 0 gains still affects the sound **URL:** \ **Category:** FMOD Engine\ **Tags:** cpp\ **Created:** [March 12, 2021, 8:46pm UTC](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875 "2021-03-12T20:46:32Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![jiyongman](https://avatars.discourse-cdn.com/v4/letter/j/ebca7d/32.png) [@jiyongman](https://qa.fmod.com/u/jiyongman)\ **Post date:** [March 12, 2021, 8:46pm UTC](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875/1 "2021-03-12T20:46:32Z")
I thought, just like the **FMOD\_DSP\_TYPE\_PARAMEQ** and **FMOD\_DSP\_TYPE\_MULTIBAND\_EQ** , **FMOD\_DSP\_TYPE\_THREE\_EQ** would also skip audio processing when all gain values are 0. Based on that theory, I came up with an equation for my dynamic sounds and applied the resulting values to the gains of **Three EQ** s at runtime. But the result wasn’t what I expected. I didn’t know what was wrong until I tried with all zero gains. Sounds needed to gradually and naturally get stronger or weaker depending on the situations, but they were already weak with the default/starting values of 0s. I spent hours checking my code, but nothing was wrong. So I finally installed **FMOD Studio** and tested **Three EQ** there. The result? I noticed the same issue with it! Even though all gains were 0, my sound got noticeably weird when **X-Low** and **Y-High** were too close, or **Y-High** was lower than **X-Low**. I also tried other **X-Slope** options, but those didn’t make any difference. Is this normal behavior? Currently, all my equations became useless ☹ ---
**Author:** ![Alcibiade](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/alcibiade/32/4284_2.png) [@Alcibiade](https://qa.fmod.com/u/Alcibiade)\ **Post date:** [March 12, 2021, 10:03pm UTC](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875/2 "2021-03-12T22:03:37Z")
Hi, I also note the weird behavior of the 3-EQ. Perhaps could you rather use the Multiband EQ, which from what I understand is more recent and better designed. You could mimic what you had with 3-EQ by doing: A : lowshelf B : peaking (with a low Q) C : highshelf (or maybe peaking for all 3, haven’t tested) When A-B-C gains are at 0, moving frequencies doesn’t seem to have any weird artifact, unlike 3-EQ. ---
**Author:** ![jiyongman](https://avatars.discourse-cdn.com/v4/letter/j/ebca7d/32.png) [@jiyongman](https://qa.fmod.com/u/jiyongman)\ **Post date:** [March 15, 2021, 1:36pm UTC](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875/3 "2021-03-15T13:36:19Z")
Thanks for telling me that I’m not the only one having the issue! As for the Multiband EQ, I also know that it works well if you read the first line again. 🙂 I like the Multiband EQ but there’s a time when the Three EQ is needed. One example is [this](https://qa.fmod.com/t/is-there-any-example-about-use-fmod-dsp-type-multiband-eq/14668/3). ---
**Author:** ![joseph](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/joseph/32/264_2.png) [@joseph](https://qa.fmod.com/u/joseph)\ **Post date:** [March 16, 2021, 3:34am UTC](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875/4 "2021-03-16T03:34:46Z")
Thanks for the bug report. So far I’ve been able to confirm that the 3-EQ effect is definitely exhibiting some odd behavior when using a 12 dB crossover slope. I’ve yet to test whether other slopes also exhibit this issue, but I suspect that they will. Accordingly, I’m adding this issue to our bug tracker. Unfortunately, there is no easy workaround for this issue. ---
**Author:** ![jiyongman](https://avatars.discourse-cdn.com/v4/letter/j/ebca7d/32.png) [@jiyongman](https://qa.fmod.com/u/jiyongman)\ **Post date:** [March 16, 2021, 12:10pm UTC](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875/5 "2021-03-16T12:10:17Z")
Oh, that’s both good and bad news. Good that it’s not intentional behavior, and bad that there’s no workaround right now. Hope that will be fixed soon. Thanks for the confirmation! ---
**Author:** ![demes14](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@demes14](https://qa.fmod.com/u/demes14)\ **Post date:** [August 4, 2023, 9:01am UTC](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875/6 "2023-08-04T09:01:12Z")
I have same issue with all crossover types. It sounds like phase problem. ---
**Author:** ![joseph](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/joseph/32/264_2.png) [@joseph](https://qa.fmod.com/u/joseph)\ **Post date:** [August 7, 2023, 3:54am UTC](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875/7 "2023-08-07T03:54:33Z")
> [@demes14](#): > > I have same issue with all crossover types. Thanks for the report. I’ve added you to the list of people who’ve reported this bug.