[PD] basic resonant filters in Pd

[Derek Holzer]

Hi Brandon,

here ya go!

VANILLA PD

*SIGNAL CONTROLLED*

vcf~
moog~

*MESSAGE CONTROLLED*

lop~
bp~
hp~
biquad

PD-EXTENDED/EXTERNAL LIBRARIES

*SIGNAL CONTROLLED*

---IEM Lib filters---

vcf_filter~ (building block for following abstractions)

vcf_bp2~
vcf_bp4~
vcf_bp6~
vcf_bp8~

vcf_hp2~
vcf_hp4~
vcf_hp6~
vcf_hp8~

vcf_lp2~
vcf_lp4~
vcf_lp6~
vcf_lp8~

vcf_rbp2~
vcf_rbp4~
vcf_rbp6~
vcf_rbp8~

*MESSAGE CONTROLLED*

---IEM Lib filters---

filter~ (building block for following abstractions)

bpq2~
bpw2~
bsq2~

hp1~
hp2~
hp2_bess~ (can go from 2-10 order)
hp2_butt~  (can go from 2-10 order)
hp2_cheb~  (can go from 2-10 order)
hp2_crit~  (can go from 2-10 order)

lp1~
lp2~
lp2_bess~  (can go from 2-10 order)
lp2_butt~  (can go from 2-10 order)
lp2_cheb~  (can go from 2-10 order)
lp2_crit~  (can go from 2-10 order)

---GGEE---

(Generate biquad coefficients)
bandpass
highpass
lowpass

Maybe I missed some? ;-)

Best!
D.


brandon zeeb wrote:
> Hallo,
> 
> How does everyone implement basic resonant filters, ie: LPF, HPF, BPF, 
> in Puredata?  [lop~], [hip~], and [bp~] are nice, and can easily be 
> strung serially to create 2nd, 3rd, and 4th order filters, but lack q.
> 
> [biquad~] seems up to the task, but I'm unable to find any information 
> in the help file or docs online pertaining to how one could replicate 
> standard filters using this object.

-- 
::: derek holzer ::: http://blog.myspace.com/macumbista ::: 
http://www.vimeo.com/macumbista :::
---Oblique Strategy # 164:
"Twist the spine"