Why use db for unit of audio volume?

Discussion and feedback on Construct 2

Post » Sun Jun 01, 2014 8:57 am

Sorry Rex, unfortunately your plugin didn't work for my needs, i set fade out 5 seconds and their volume stayed the same and then just ubruptly cut out at 5-seconds, but i don't think it's your fault, i am doing some complex things with already setting volume every tick to a smooth graph of Array points, i think your plugin would work if it was using like a second pass volume that's on another layer to the existing volume variable.

Sort of like how you can set a Sprite at 65% opacity and the Fade behavior will still fade that out from 65% to 0% smoothly.
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Post » Thu Jun 26, 2014 4:15 pm

sqiddster wrote:It's not too hard to make a function to convert back and forth from db and a scale system (e.g. 0-100).

Scale = 100 * 10 ^ (dB / 33.2)
dB = -log10(100 / Scale) * 33.2


Thanks! That's what I need!

And @Ashley , It would be good to add that to the manual, as I think.
Or adding expression to the plugin would be nice!
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Post » Mon Aug 14, 2017 7:09 am

Message: DjowG can only post plain text URLS until they have 500 rep. 2 URLS modified. Why?
rocky10529 wrote:I calculate a function about volume and db :
If db 0 = original volume, -10 is half, 10 is double ( but max is 0), then :

Volume = 2 ^ ( db / 10 )
db = 10 * log( Volume ) / log( 2 )

Range of value:
0 <= Volume <= 1;
1 = original volume, 0 = silence.
-Infinity ( or -60 for human ear ) <= db <= 0 ;
0 = original volume, -Infinity or -60 = silence.

And I made a little sample capx about fade in/out.

Here is Sample : https://dl.dropboxusercontent.com/u/507 ... index.html
And capx : https://drive.google.com/file/d/0BzBB_g ... sp=sharing

not sure is it correct, but sounds good to me.
If you cannot hear the sound please wait a second or refresh. :D
Thanks.



:o :o :o YOU ARE A MASTER OF SOUND :!: :!: :!:

thanks a lot
I spent two days breaking my head for this and nothing (until now :lol: )
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