[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: equal loudness calculation

This is the analitic equation for A-Weighting.


thank you, this is quite exactly what I was looking for.

Just, pass it to Z domain and use "a" and "b" coef. in a IIR filter.

in this case, I don't want to filter a sound, but simply scale its amplitude. Or is there a way to make the formula itself efficient by implementing it as a filter?

Very efficient !


----- Original Message ----- From: "Julian Rohrhuber"
To: <AUDITORY@xxxxxxxxxxxxxxx>
Sent: Tuesday, April 12, 2005 4:25 PM
Subject: [AUDITORY] equal loudness calculation

 I'm looking for a computationally efficient way to do a frequency
 dependent amplitude compensation. The emphasis is much less accuracy
 (especially not for different loudness levels) but more a reasonable
 approximation - maybe a polynomial.

 Any hints?