[sdiy] HP from LP ?

[Florian Anwander]

Hello,

maybe, they do it like it is done in the Roland SH-5? (I never had a 
SH-5, so I cannot judge whether it sounds useful).
See http://www.synfo.nl/servicemanuals/Roland/SH-5_SERVICE_NOTES.pdf, 
page 27,

Florian

Am 31.07.2017 um 20:10 schrieb Michael Zacherl:
> Is there a ‘cheap’ way of turning a low pass filter into a high pass?
>
> How’s that possibly approached?
> Just something like subtracting the LP’s output from its input signal?
> If so, what about resonance?
>
> My point about doing that cheaply is the (upcoming) release of two synths with Moog ladder filter featuring a switchable high pass mode.
> To my knowledge, there was no resonating HP filter from Moog so far in any synth.
> Until now.
> Since both synths (Moog Mother-32 and Behringer Model D) are on the budget side in terms of money I’d rather expect a simple solution compared to a, say, DSI Pro-2 with two fully featured filters in it.

-- 
http://www.florian-anwander.de