[RWP] JS effects plugin, converting a lowpass filter sweep to a highpass filter sweep.

[Tor Tollhag]

I tried one free vst.
It does what I want and a bit more, but since it's not as accessible
as the js plugins or reapers built in vst's, the hard part is
controling how fast the sweep is going when I can't change the
sweeping rate in time (miliseconds or seconds).
However I got some help and have Another temporary sollution that works.
Make 2 tracks in Reaper, both containing the same audio.
Then you invert the phase on one of the tracks.
If you did that propperly all you'll hear is silence.
Now put the sweepinglowpass filter on one of the tracks.
There you go, you now have a highpass filter.
The frequency on this filter goes up to 20 kHz, so there's still some
highs coming through, but I can probably modify the slider by setting
the slider to a higher number by editing the js plugin itself.
Since creating a highpass filter from a lowpass one is all about
inverting the audio signal, I bet there's a way to edit the js plugin
to make it do that as well, but haven't figured that out yet.
Until then this will do pretty good.



2015-01-19 7:43 GMT+01:00, Ken Downey <KenWDowney at blindlabyrinth.com>:
> There are tons of freeware vst filter plug-ins, wawas, and so on. I'd start
>
> out by looking on the net for some of those. Kjaerhus makes some really good
>
> ones.
>
> ----- Original Message -----
> From: "Tor Tollhag" <tortollhag at gmail.com>
> To: "Reapers Without Peepers" <rwp at reaaccess.com>
> Sent: Sunday, January 18, 2015 12:11 PM
> Subject: [RWP] JS effects plugin, converting a lowpass filter sweep to a
> highpass filter sweep.
>
>
>> Hi.
>> I've used Reaper for a long time and just now discovered one of the
>> built in js (jesusonic) effects called filters/sweepinglowpass
>> This works great cause I can very easily do filter sweeps, something
>> that I've been thinking about how to do with automation for a while.
>> Only one thing, I wish there would be a similar plugin for sweeping
>> but with a highpass filter. Then I could do really interesting things
>> by using the 2 plugins in combination with each other on items and
>> tracks.
>> I know Jesusonic is a text based plugin format, so I can actually look
>> at the code.
>> I haven't found a lot of documentation about this, and haven't figured
>> it out, but I wonder.
>> How do I convert a lowpass filter sweep plugin to a highpass one.
>> Would this be simple or does it involve very advanced calculations or
>> programming software to do?
>> Not sure if I'm even allowed to do such a thing either since the
>> plugin comes with the software so thought I would ask here as well.
>> Hope someone might be willing to help me out.
>>
>>
>> Tor
>>
>> _______________________________________________
>> RWP mailing list
>> RWP at reaaccess.com
>> http://reaaccess.com/mailman/listinfo/rwp_reaaccess.com
>
>
> _______________________________________________
> RWP mailing list
> RWP at reaaccess.com
> http://reaaccess.com/mailman/listinfo/rwp_reaaccess.com
>