MKS70

[Jon Stutters]

If it gets you coding your next filter then you should be locked in a room with it I reckon ;).

Jonny

On 2 Sep 2011, at 14:24, Tony Hardie-Bick wrote:

> Maybe I shouldn't read this ;)
> 
> Chris Strellis <Chris.Strellis at crystalvision.tv> wrote:
> 
>>> Anyway, James will have the pleasure of figuring it out :)
>> 
>> Fo'sure :|
>> 
>>>> http://www.strellis.com/rs3.shtml
>>> 
>>> That MAM RS3 thing looks like a lesson in warmth... mad, man :)
>> 
>> You'd like it ;)
>> 
>> It's based on the Korg PS3100 triple resonator.
>> 
>> http://www.korganalogue.net/korgps/manuals/3100/1/1RESO.html
>> 
>> 
>> and from
>> http://www.birthofasynth.com/Scott_Stites/Pages/triple_svvcf_main.html
>> 
>> "The PS3100 resonator is made up of three independent bandpass filters.
>> The filters are arranged in parallel - i.e the input signal is applied
>> to the inputs of all three filters, and the outputs of all three
>> filters
>> are then mixed together to form the composite resonator response.
>> 
>> The centre frequency of each bandpass filter is separately tuneable, so
>> that each filter can carve out its own section of the input signal. In
>> addition to that, all three filters can be moved in tandem by another
>> control, or control voltage, so that the centre frequency of each
>> filter
>> maintains the same relationship to the other two filters. Sweeping the
>> three filters in tandem is what gives the resonator its unique
>> character. Adjusting the relative position of each filter's centre
>> frequency changes the character of the initial response, and this
>> response is swept up and down in frequency. Sweeping the resonator in
>> tandem often, to me, sounds like a resonant phase shifter.
>> 
>> In addition to being able to sweep all three filters in tandem, the
>> resonator also allowed one to adjust the resonance of all three filters
>> with one control, which provided yet even more variation to the effect.
>> 
>> In later days, the resonator concept was expanded upon - one example is
>> the MaM RS3. The MaM RS3 allowed the filters to not only be swept in
>> tandem, but also independently of each other, to a large degree. In
>> other words, where the original resonator would only allow all three
>> filters to sweep up and down together, the MAM RS3 would allow two
>> filters to sweep up while another swept down, even at different rates.
>> This greatly increases the range of effects possible from a triple
>> resonant filter.
>> 
>> Another innovation of the RS3 was the ability to provide a stereo
>> output
>> derived from the three swept filters."
>> 
>> Maybe you want to model it ;)
>> 
>> Cheers
>> 
>> Chris
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