How to set a slider's volume from the audio mixers's volume in Unity?

Question

I have audioMixerGroup.audioMixer.GetFloat("AllVolume", out tmp); tmp will have volume in db. I vant to convert db (-80, 0) to slider's value (0, 1).

in short, I need to do How to set a Mixer's volume to a slider's volume in Unity? just the other way around

The generic problem you are trying to solve is converting between a logarithmic (audio) scale and a percentage. As for Unity specific did you come across this? https://gamedevbeginner.com/the-right-way-to-make-a-volume-slider-in-unity-using-logarithmic-conversion/ — shox, Aug 18 '20 at 18:28

MysticalUser · Accepted Answer · 2021-09-12T21:21:21.207

3

You can create a Remap function:

float Remap(float value, float min1, float max1, float min2, float max2) 
{
    return min2 + (value - min1) * (max2 - min2) / (max1 - min1);
}

Implementation:

audioMixerGroup.audioMixer.GetFloat("AllVolume", out tmp);
slider.value = Remap(tmp, -80f, 0f, 0f, 1f);

edited Sep 12 '21 at 21:21

answered Aug 18 '20 at 15:49

MysticalUser

404
5
13

score 0 · Answer 2 · answered Oct 24 '22 at 22:07

0

When setting the volume you will utilize the following code:

Mathf.Log10(value) *20;

What you need is the inverse:

Mathf.Pow(10, (value/20);

answered Oct 24 '22 at 22:07

leonardo david

1

score 0 · Answer 3 · answered Apr 01 '23 at 06:02

0

I would do the below when you need to use the tmp variable:

(tmp + 80f) * 0.01f

answered Apr 01 '23 at 06:02

Rob

93
3

How to set a slider's volume from the audio mixers's volume in Unity?

3 Answers3