MOTM

Great tip Dave.  I have always thought of HP filters as being bass-less. 
This is a great twist that had not crossed my mind.  I need to go play with
my 420 some more.
Larry H

----------
> From: Dave Bradley <daveb@...>
> To: motm@egroups.com
> Subject: RE: [motm] HP and LP  vs single bandpass 
> Date: Wednesday, April 05, 2000 1:08 PM
> 
> Old programming trick:
> 
> Beef up a patch with wimpy sounding bass by running through an additional
> highpass filter, with no modulation and a low cutoff frequency around 50
to
> 100 Hz. Turn up the resonance to add a bass boost to fatten up your
patch.
> 
> Dave
> 
> 
> >
> > True. I hadn't thought of the extra resonance peak. But you could
> > replicate
> > the separate cutoff frequencies, couldn't you? There is a
> > specific interval
> > between cutoff frequencies at any given point in time (width) and by
> > carefully choosing the center point (i.e. bandpass frequency) you could
> > probably come close; but given what Dave pointed out, it really
wouldn't
> > sound the same at all unless you kept the filters wide open in all
cases.
> >
> > Interesting. This is the kind of stuff I love to think about but
shouldn't
> > be thinking about while at work! :)
> >
> > > -----Original Message-----
> > > From: Dave Bradley [mailto:daveb@...]
> > > Sent: Wednesday, April 05, 2000 11:48 AM
> > > To: motm@egroups.com
> > > Subject: RE: [motm] Purchasing decisions
> > >
> > >
> > > With a resonant highpass and resonant lowpass hooked in series,
> > you get 2
> > > resonant peaks at the corners, instead of 1 in the center for a
single
> > > bandpass. Also, you can control the cutoffs separately, like have an
LFO
> > > modulating the HP but an envelope modulating the LP.
> > >
> > > Plus, if you hook the 2 filters in parallel, then you can get 12
db/oct
> > > notch filtering, doubly resonant peaks if both are set to NF,
> > etc. Just a
> > > lot more flexible.
> > >
> > > Dave
> > >
> > > > -----Original Message-----
> > > > From: Brousseau, Paul E (Paul) [mailto:noise@...]
> > > > Sent: Wednesday, April 05, 2000 12:35 PM
> > > > To: 'motm@egroups.com'
> > > > Subject: RE: [motm] Purchasing decisions
> > > >
> > > >
> > > > I'm not quite clear... how is this different from a band-pass
> > > filter with
> > > > modulated Q / width and frequency?  Not that it wouldn't be
> > > > really cool, I'm
> > > > just wondering if I'm missing a nuance?
> > > >
> > > > --PBr
> > >
> > >
> > >
> > >
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