[sdiy] Other resonator designs

[Dan Snazelle]

while we are on the topic 

has anyone built any of the Electronotes Filterbanks?

there are 2 i am thinking of...one which is Ian's design

one is called the responding filter bank


they both look like a lot of work but both look rewarding.


thanks

--------------------------------------------
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> From: tom at electricdruid.net
> Subject: Re: [sdiy] Other resonator designs
> Date: Thu, 13 Aug 2009 14:57:34 +0100
> To: gsn10 at hotmail.com
> CC: synth-diy at dropmix.xs4all.nl
> 
> 
> On 13 Aug 2009, at 14:09, Scott Nordlund wrote:
> 
>>
>> Most instruments (including electric guitars, unless you're using  
>> piezo bridge pickup) already have their own characteristic  
>> formants, so you can only add to what coloration is already there.
>>
>> Of course synths will have a specific spectrum as well, according  
>> to your choice of waveform, though this isn't a formant because it  
>> changes with pitch.  The "pure" way to do it (formant synthesis)  
>> uses an impulse train as input, in which case the harmonic content  
>> is determined entirely by the filtering.
> 
> 
> This is exactly the sort of stuff that I'm getting excited about. The  
> oscillator section of a synth is equivalent to (say) the strings of a  
> guitar or 'cello. This basic sound is then heavily coloured by the  
> formants caused by body and cavity resonances. This gives the overall  
> 'tone' of the instrument.
> 
> Having one filter that follows the pitch of the note is much more  
> equivalent to altering the type of string that you're using, rather  
> than any kind of body modelling. This is one reason subtractive  
> synths don't sound at all naturalistic. And that's before you go  
> "Beeeooowwwwmmm!" with your envelope and blow any chance of realism!
> 
> Personally, I'm not particularly fussy about pure formant synthesis.  
> It seems reasonable to me to have a complex system generating the  
> sound that gets 'processed' by the body. After all, a piano mechanism  
> isn't exactly straightforward, even before we get into the details of  
> formant filtering caused by the soundboard and whatever other  
> resonances there are. Secondly, (and again very personally) I'm  
> mostly interested in abstract sound synthesis, so I'm not attempting  
> to design a synth that sounds exactly like a 'cello. However, I would  
> like to design a synth that has the *depth* and *richness* of a  
> cello's tone, and I suspect that body modelling is quite a big part  
> of that. Adding an artificial body model consisting of a number of  
> resonances (and notches too, don't forget them) seems to offer  
> another layer of depth to synthetic sound.
> 
> A big positive to all resonators from me.
> 
> T.
> 
> 
> 
> 
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