and here's hip with raw filters 2015-01-30 20:09 GMT-02:00 Alexandre Torres Porres <por...@gmail.com>:
> that seems quite nicer than [hip~], cool. > > I rewrote it to make it more concise with expr. > > cheers > > 2015-01-30 19:29 GMT-02:00 katja <katjavet...@gmail.com>: > > Attached patch illustrates how [iemlib/hp1~] is calculated. This gives >> a perfect hipass, [hip~] could (or should) be done the same way I >> guess. >> >> Katja >> >> On Fri, Jan 30, 2015 at 6:21 AM, Alexandre Torres Porres >> <por...@gmail.com> wrote: >> >> This message of mine was intended to be a bug report >> > >> > I see, but my point is that it's not much of a "bug", so if you want to >> see >> > how these filters work more deeply, you may check my stuff. >> > >> > You can see how I made versions of the filters as [fexpr~] or [biquad~] >> and >> > the raw filters. I made [vcf~] out of [cpole~], for example. And you can >> > check the plot of magnitude/phase. >> > >> >> I know (and enjoy very much) yours >> >> Computer Music With Examples In Pd. >> > >> > Thanks. That got old though... I translated from portuguese what I had >> for a >> > workshop at the last pd convention in 2011, but it's mostly FFT. My >> current >> > portuguese version is way bigger, up to 250 examples in the next >> release I'm >> > planning for next month. These patches I'm sharing is from my newest >> > releases. >> > >> >> Probably it would be better then to warn users >> >> about this limit of ~12 kHz in the help-files then. >> > >> > Yeah, it'd be good to point out a bit of its characteristics. I learned >> a >> > lot by checking on my own. >> > >> > I could realize how [bp~] is quite similar to the resonant lowpass from >> > [lores~] for example. Its just a matter of setting up the gain. If you >> set >> > [bp~]'s Q to 1, you'll also see how it behaves much like a lowpass >> filter >> > like [lop~]. The [vcf~] filter has similar characteristics. >> > >> > cheers >> > >> > 2015-01-30 0:19 GMT-02:00 Gilberto Agostinho >> > <gilbertohasn...@googlemail.com>: >> > >> >> Hi Alexandre, thanks for your reply. >> >> >> >> On 30/01/15 02:39, Alexandre Torres Porres wrote: >> >> >> >> it's how the filters were designed, they're not perfect throughout the >> >> spectrum >> >> >> >> >> >> Probably it would be better then to warn users about this limit of ~12 >> kHz >> >> in the help-files then. >> >> >> >> you'll need to use/build other filters for that purpose of working with >> >> that higher portion of the spectrum (in which I can hardly still hear, >> by >> >> the way)/ >> >> >> >> >> >> Hmm, I can clearly hear the difference between feeding a high >> frequency to >> >> [vcf~] and to [bp~] using a large enough Q (~100 for instance). With >> that Q, >> >> try sweeping from 12kHz until 14kHz in both filters, and you'll hear >> that >> >> [vcf~] behaves as expected, while [bp~] does not change the frequency >> but >> >> only affects the amplitude of the output for some reason. >> >> >> >> a few of patches of mine that describe the behaviour of vanilla and >> some >> >> extended filters >> >> >> >> >> >> Thanks a lot for the patches, but I am actually aware of [vcf~] and >> >> [biquad~]. This message of mine was intended to be a bug report rather >> than >> >> a cry for help as I have no particular problem with filters needing a >> >> solution right now. But in any case I will check your patches, as I >> know >> >> (and enjoy very much) yours Computer Music With Examples In Pd. >> >> >> >> Take care, >> >> Gilberto Agostinho >> > >> > >> > >> > _______________________________________________ >> > Pd-list@lists.iem.at mailing list >> > UNSUBSCRIBE and account-management -> >> > http://lists.puredata.info/listinfo/pd-list >> > >> > >
hip.pd
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