Re: [PD] biquad and karplus-strong

Hey Alexandre, I got sound that I liked really quickly out of your patch. Surely a good didactic test. Regards, Julian On 16 June 2016 at 07:26, Alexandre Torres Porres wrote: > > > 2016-06-15 5:09 GMT-03:00 Peter P. : > >> Orm's implementation of

Re: [PD] biquad and karplus-strong

2016-06-15 5:09 GMT-03:00 Peter P. : > Orm's implementation of the random phase might also be cheaper than > your two fexpr~ for that part. it's just "expr~" not "fexpr~" ;) > You might not have to be conservative with CPU > usage in your case at all however. >

Re: [PD] biquad and karplus-strong

* Jesse Mejia [2016-06-14 17:35]: > I haven't heard of decay stretching in KS - I'm interested in this - where is > info on that? You have guessed it, on the web! https://www.google.com/#q=karplus+strong+decay+stretching

Re: [PD] biquad and karplus-strong

Hi Alexandre, * Alexandre Torres Porres [2016-06-14 20:29]: [...] I see you use fexpr~ to derive binary noise from a [noise~]. I might not be correct but I suppose that binary noise has a similar, if not the same, spectrum as re [noise~], so it could be left out to save some

Re: [PD] biquad and karplus-strong

you said it better anyhow, haha 2016-06-14 18:35 GMT-03:00 cyrille henry : > > > Le 14/06/2016 23:27, Alexandre Torres Porres a écrit : > >> 2016-06-14 17:40 GMT-03:00 cyrille henry c...@chnry.net>>: >> >> now that processing power allow to easily compute

Re: [PD] biquad and karplus-strong

2016-06-14 17:40 GMT-03:00 cyrille henry : > now that processing power allow to easily compute filter at different > frequency, I would suggest to replace the averaging algo with a simple lop~ > filter and experiment with the cutoff frequency. > yep, that's what I was trying to

Re: [PD] biquad and karplus-strong

hello, i've just read the original article from 1983 describing KS algo, including decay stretching. as far as i understand, averaging the last 2 sample is a very optimized low pass iir filter at fixed frequency. the decay stretching allow to change the filter cutoff. now that processing

Re: [PD] biquad and karplus-strong

Hey, I didn't send the new version in the attachment, that's the same as in my didactic material, here's the new version 2016-06-14 15:29 GMT-03:00 Alexandre Torres Porres : > Hi Peter, I tried my best to do a faithful implementation of the Karplus > Strong algorithm (with the

Re: [PD] biquad and karplus-strong

Hi Peter, BTW: The patch in the pd tutorial uses [z~ 1] which you can replace with [biquad~ 0 0 0 1 0] and your suggestion to do the averaging in the biquad~ should simplify that patch even more. The probability based polarity change could be done using the attached patch. -- Orm Am Dienstag,

[PD] biquad and karplus-strong

Hi list, I am trying to implement Karplus-Strong and am wondering about the following questions: - I run the feedback-delay inside a subpatch that is re[block~ 1]ed to 1 sample blocksize. Will a biquad~ object work correctly with blocksizes of 1 as well? - The Karplus-Strong paper recommends a