Articles - CCRMA - Stanford University
Articles - CCRMA - Stanford University
Articles - CCRMA - Stanford University
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Desired Pole Radius<br />
Pole radius Rk and t60 are related by<br />
R t60(ω k)/T<br />
k<br />
= 0.001<br />
The ideal loss filter G(z) therefore satisfies<br />
|G(ω)| t60(ω)/T = 0.001<br />
The desired delay-line filters are therefore<br />
⇒<br />
or<br />
20log 10<br />
Gi(z) = G Mi (z)<br />
<br />
Gi(e jωT ) t 60 (ω)<br />
M i T = 0.001.<br />
<br />
Gi(e jωT ) = −60 MiT<br />
t60(ω) .<br />
Now use invfreqz or stmcb, etc., in Matlab to design<br />
low-order filters Gi(z) for each delay line.<br />
39
Change language