Mr Niceguy

Hello. Is there an algorithm that will scale the perceived loudness of a tone based upon the frequency? For example, I would like to slide the output of a cycle~ object from the lowest to the highest possible frequencies, and have the perceived loudness of the super bass frequencies equal to the perceived loudness of the highest frequencies. Thank you.

Hello.  Is there an algorithm that will scale the perceived loudness of a tone based upon the frequency?   For example, I would like to slide the output of a cycle~ object from the lowest to the highest possible frequencies, and have the perceived loudness of the super bass frequencies equal to the perceived loudness of the highest frequencies.  Thank you.

Hello.  Is there an algorithm that will scale the perceived loudness of a tone based upon the frequency?   For example, I would like to slid

scaling-perceived-loudness

Here you can find some functions. Didn't know myself, but the keyword is A-weighting.

https://en.wikipedia.org/wiki/A-weighting

don't blast your ears and your speakers...

https://cycling74.com/forums/equal-loudness-curves-implementation/

Hello. The wikipedia link Johan posted is a bit over my head, but I think I should be able to use that in combination with the discussion from Bernd to figure this out. I'll post my patch once I get this to work. Thanks guys!

Hello.  The wikipedia link Johan posted is a bit over my head, but I think I should be able to use that in combination with the discussion from Bernd to figure this out.  I'll post my patch once I get this to work.  Thanks guys!

to get a clearer idea about the theory, you might have a look here:

https://en.wikipedia.org/wiki/Equal-loudness_contour

and there is a lot of literature about this issue in the net.

The math is less challenging than it appears. A single expression sort of does it.

yeap. johan, your formula works quite nice.

is that F/M or R/D or is that 226:2003 already?

and btw., without any variables or constants for the base gain the formular seems pointless.


is that F/M or R/D or is that 226:2003 already?


i am currently looking for the latter.

and btw., without any variables or constants for the base gain the formular seems pointless.


ok wikipedia says a-weighting is "based on" F/M @ 40 phon.

where can i find more and why was F/M the role model of something from 2003? (it shouldnt?)

ok wikipedia says a-weighting is "based on" F/M @ 40 phon.


where can i find more and why was F/M  the role model of something from 2003? (it shouldnt?)




Scaling perceived loudness