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Hi,

I like the effect ‘FMOD Lowpass Simple’ and ‘FMOD Lowpass’.
And they are essential to use occlusion.

I upgraded my project’s fmod version to 10901, and I found that 5 effects (FMOD Higpass, Highpass Simple, Lowpass, Lowpass Simple and Parametric EQ) are grouped as ‘FMOD Deprecated.’

What makes you call these effects as ‘deprecated’?

1) Is there any demerit to use them?
2) If so, what is alternative way to use Lowpass (or Lowpass Simple) for Occlusion setting?

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We have marked those effects as ‘deprecated’ to indicate that we will no longer perform development work on those features. You can continue to use them if you want; They still work exactly the same way that they did before. However, we will not develop any new features or optimisations for these effects.

Instead, FMOD Studio 1.09.00 features the FMOD MultibandEQ effect. This effect is more versatile and powerful than the effects you mentioned, and can be used as an effective replacement for all of them. Any development work focusing on frequency filtering or EQ-related improvements that we undertake in the near future will focus on this new effect.

For information about using the FMOD MultibandEQ effect as a replacement for the deprecated effects you mentioned, see the FMOD Studio Programmer’s API documentation pages for each of the deprecated effects: https://www.fmod.org/docs/content/generated/FMOD_DSP_LOWPASS.html, https://www.fmod.org/docs/content/generated/FMOD_DSP_LOWPASS_SIMPLE.html, https://www.fmod.org/docs/content/generated/FMOD_DSP_HIGHPASS.html, https://www.fmod.org/docs/content/generated/FMOD_DSP_HIGHPASS_SIMPLE.html, and https://www.fmod.org/docs/content/generated/FMOD_DSP_PARAMEQ.html.

In addition, we may someday decide to remove these effects from FMOD Studio entirely. If this does eventually occur, we will clearly indicate the change in the release notes, and you will be given the option of using a version of FMOD Studio that still supports the deprecated effects.

  • Howu

    Thank you very much, Joseph.
    However, I have a question remained.

    According to this page – http://www.fmod.org/documentation/#content/generated/engine_ue4/occlusion.html – ,
    Events with that sec Occlusion Gain and Low-Pass Directly
    ~~~ Once occlusion is enabled in the UE4 properties, any event with the “Occlusion” user property ~~~~~~
    “Note for a low-pass to be applied, you have to add a low-pass DSP to the master track of the event.” ~~

    Can I replace a low-pass DSP to Multiband EQ on the master track of my occlusion using events?

  • Cameron Baron

    Unfortunately at the moment the Multiband EQ will not get used for occlusion. Hopefully this functionality will be available in our next release. In the mean time, you can continue using the lowpass effect.

  • Howu

    Thank you for your answer, Cameron and Joseph.

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