Beginner: 0-1 to Decibels

[SBMastering]

I am trying to convert the 0-1 ratio scale to Decibels (db).

I read this and went through it thoroughly: viewtopic.php?f=12&t=8675&p=60715&hilit=decibels#p60715

I can't get this to work for me. I downloaded many OSMs and tried to modify them to no avail.

Here are the graphics of what I thought would do 20log(x). I'm assuming that means that the 0-1 value is the x. I did a couple of variations with the slider at different places

RatioToDB 1.jpg (38.54 KiB) Viewed 508 times

RatioToDB 2.jpg (38.78 KiB) Viewed 509 times

RatioToDB 3.jpg (42.1 KiB) Viewed 509 times

I am trying to control a couple of VCAs with the slider, a couple of VCAs. Just a simple gain control.

I want to be able to do a label that shows the affect of the slider in dB. The middle of the slider is 0dB.

ALSO: How can I limit a label to a specified number of decimal points? I'd like it to show three numbers to the right of the decimal point. I see that the "Float Label" component rounds to two decimal points.

[SBMastering]

Would it have something to do with the current bitrate? Do I have to do something that senses the bitrate, since they are different scales?

[martinvicanek]

Conversion from ratio to dB. I have also included the inverse conversion which may actually be more useful for volume control.
Cheers!

[cyto]

Darn, Martin! You beat me to it!

But does yours have the string format in it?

dBFSformatted.png (24.39 KiB) Viewed 492 times

-cyto