Instrument body responses (was [sdiy] Famous Fixed Filters - FFF PCB ?)

[Tom Wiltshire]

On 25 Nov 2007, at 14:14, Ingo Debus wrote:

>
> By the way, I had some good success emulating fixed filters  
> (including those of the Philicorda) with the "Match EQ" plugin of  
> Apple Logic. You just need a few sound samples of the filtered  
> signal and an idea what the input signal could have been (for the  
> Philicorda I assumed a simple sawtooth). From this the "Match EQ"  
> calculates a filter response.

This sounds like a great way to synthesize the frequency responses of  
real instrument bodies. For example, you could assume that the 'input  
signal' for a violin is a sawtooth, and then analyse samples of a  
real violin and see what body resonances you'd need to add to make  
the sawtooth sound like the violin.

This is close to what JH was trying to do with his parmetric string  
filter and Benade's book, but all rather more modern!

http://home.debitel.net/user/jhaible/jh_string_filter.html

I've always been very impressed by the difference that the 'cello'  
filter makes to a basic string-synth sound.

T.