[DelphiAsioVst-SynthEdit] DAV Chebyshev Filter

[Christian B. <Chr...@ai...>]

Dear subscriber (and the other guy who I shamelessly BCCed because I 
thought this might be interesting),

I'm proud to announce the first change in my modules here. I updated the 
chebyshev filter module to calculate its coefficients much faster now. 
In fact I rewrote the whole calculation in assembler, which guarantees 
true 80bit processing using only one "fsincos" opcode per calculation 
(usually there are plenty of these necessary costing around 100 cycles 
[while an add/mul only costs 1 cycle]).

As a result it should be possible to modulate the frequency more easily 
now. Furthermore it is now possible to select odd filter orders. These 
sound slightly different since the filters are designed to match at the 
cutoff point (odd orders have a DC gain of the selected ripple).

Also, the module contains an "Automatable+" version, which is optimized 
to have an even lower CPU usage (but less accurate, I mean still within 
the tolerances of the human ear, which probably no-one will hear the 
differences, but...).

The link is: 
http://www.savioursofsoul.de/Christian/SEM/DAV_ChebyshevFilter.7z

Kind regards,

    Christian