[PD] basic resonant filters in Pd

[cyrille henry]

there is also bq~ in the nusmuk floder + all abstraction to compute the filter coef.
bq~ is a simple biquad, but with audio input for filter coefs.

C


Derek Holzer a écrit :
> 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.
>