[sdiy] How to continually blend from a parallel connection of thetwo multi-mode resonating filters?

[Dave Leith]

Here's kinda how I'm thinking it might work.Any suggestions???

http://student.vfs.com/~dleith/seriesParallelFilters.gif

On Tue, Jun 9, 2009 at 12:49 PM, Cynthia Webster<cynthia.webster at gte.net> wrote:
> Hi Scott!
>
> Whoops ya' got me, yes we did use a dual pot to attenuate the other input.
> (I believe a dual 50K linear pot is what we used).
>
> Cynthia
>
> http://www.cyndustries.com/
>
> Scott wrote:
>>
>> I understand the output, but would you have the dry signal always going to
>> the input of both filters, or would you attenuate the dry signal for the 2nd
>> filter as you're mixing in the signal from filter #1?
>>
>> -----Original Message-----
>> From: synth-diy-bounces at dropmix.xs4all.nl
>> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Dave Leith
>> Sent: Tuesday, June 09, 2009 1:16 PM
>> To: Cynthia Webster
>> Cc: SDIY
>> Subject: Re: [sdiy] How to continually blend from a parallel connection of
>> thetwo multi-mode resonating filters?
>>
>> Yup, that's exactly what I was looking for! Any gotchas with the
>> methods described here or suggestion how to best achieve this.
>>
>> Thanks Dave
>>
>> On Tue, Jun 9, 2009 at 9:13 AM, Cynthia Webster<cynthia.webster at gte.net>
>> wrote:
>>
>>>
>>> Hi Dave!
>>>
>>> The Cynthia brand Twin Wasp Filter offers this feature with two resonant
>>> multi-modes.
>>>
>>> http://www.cyndustries.com/modules_wasp.cfm
>>>
>>> (You can mix the two outputs together for Parallel output,
>>> and either run one of the outputs to the internal mixer - or run it into
>>> the
>>> input of the other
>>> filter using a pan pot to decide how much of this goes to the mixer or
>>> the
>>> other filter).
>>>
>>> Best Wishes!
>>>
>>> Cynthia
>>>
>>> http://www.cyndustries.com/
>>>
>>>
>>>
>>> Dave Leith wrote:
>>>
>>>>
>>>> I own a Sherman Filterbank (http://www.sherman.be/) which has a nice
>>>> feature where one can continually blend from a series to parallel
>>>> connection of the two multi-mode resonating filters. Haven't seen this
>>>> elsewhere and it's a nice feature and never seen circuitry for this.
>>>> Other features which are quite standard is blending from HP->BP->LP -
>>>> it's not this feature I'm interested in...
>>>>
>>>> Any ideas how this could be done?
>>>>
>>>> Thanks
>>>> Dave
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>>>>
>>>>
>>>>
>>>
>>>
>>
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