Matlab m-files for outer/middle ear filtering

[Chen-gia TSAI <gia@xxxxxxxx>]

Dear list,

In Meddis and Michael's (JASA 89(6), 2866-82, 1991) pitch model, the effects of outer/middle ear filtering was simulated by a bandpass filter, defined as

y(i)=0.8878*x(i)-0.8878*x(i-2)-0.2243*y(i-1)+0.7757*y(i-2)

I am looking for the undated filters that are more consistent with the equal-loudness curves based on psychoacoustic experimental results. Perhaps there are Matlab m-files for this filtering. Could anyone inform me how to find them in the internet?

Chen-Gia Tsai
gia@snafu.de