14 Jul
2007
14 Jul
'07
11:39 a.m.
Hallo, Andy Farnell hat gesagt: // Andy Farnell wrote:
One thing you might like to look at is the Fletcher Munsen curve. There isn't a hard mathematical relationship between perceived amplitude (loudness) and frequency, it's more of a biological and psychoacoustic effect, and somewhat subjective between listeners.
http://ccrma.stanford.edu/CCRMA/Courses/SummerWorkshops/96/Psychoacoustics/l...
The Pd solution to this is to use lookup tables to scale amplitude, a bit less fiddly than setting up a piecewise function.
Also see [mtx_phon_curve] in Iemmatrix.
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__