accuracy of tuning with the Karplus-Strong algorithms

accuracy of tuning with the Karplus-Strong algorithms

Date	2016-07-17 20:24
From	Aaron Krister Johnson
Subject	accuracy of tuning with the Karplus-Strong algorithms
	I mentioned some years ago that because some/most of the waveguide/Karplus-Strong algorithms (repluck, wgpluck, etc.) seem to use integer sample-level delay lengths, you'll often find their tuning accuracy leaves much to be desired (for instance, really badly beating octaves, depending on how the frequency falls in your closest approximation of number of samples by sample-rate). IIRC, 'pluck' was fine, but 'pluck' has rather limited timbral adjustment parameters. Other DSP libraries like 'pyo' seem to do this correctly, and use Lagrangian frequency interpolation on delay-lines to get arbitrary accuracy. Are there any plans to get Lagrangian interpolation into the bulk of the string physical models? For my musical purposes, they are unfortunately unusable. How easy would it be to volunteer to improve these opcodes and code the pitch accuracy into them myself? Aaron Krister Johnson http://www.untwelve.org Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-07-17 20:43
From	Victor Lazzarini
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	We don't even need lagrangian interpolation, allpass filters will tune it fine. The trouble is that repluck and wgpluck do not use any fine tuning. Streson does, for instance. I can write a pluck-like opcode with fine tuning if that's helpful, with pickup and pick position control. Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy Maynooth University Ireland On 17 Jul 2016, at 20:24, Aaron Krister Johnson <akjmicro@GMAIL.COM> wrote: I mentioned some years ago that because some/most of the waveguide/Karplus-Strong algorithms (repluck, wgpluck, etc.) seem to use integer sample-level delay lengths, you'll often find their tuning accuracy leaves much to be desired (for instance, really badly beating octaves, depending on how the frequency falls in your closest approximation of number of samples by sample-rate). IIRC, 'pluck' was fine, but 'pluck' has rather limited timbral adjustment parameters. Other DSP libraries like 'pyo' seem to do this correctly, and use Lagrangian frequency interpolation on delay-lines to get arbitrary accuracy. Are there any plans to get Lagrangian interpolation into the bulk of the string physical models? For my musical purposes, they are unfortunately unusable. How easy would it be to volunteer to improve these opcodes and code the pitch accuracy into them myself? Aaron Krister Johnson http://www.untwelve.org Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-07-17 20:57
From	Aaron Krister Johnson
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	Yes! Or, tweak repluck and/or wgpluck to have better tuning. :) Is that a lot of work? Aaron Krister Johnson http://www.untwelve.org On Sun, Jul 17, 2016 at 2:43 PM, Victor Lazzarini <Victor.Lazzarini@nuim.ie> wrote: We don't even need lagrangian interpolation, allpass filters will tune it fine. The trouble is that repluck and wgpluck do not use any fine tuning. Streson does, for instance. I can write a pluck-like opcode with fine tuning if that's helpful, with pickup and pick position control. Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy Maynooth University Ireland On 17 Jul 2016, at 20:24, Aaron Krister Johnson <akjmicro@GMAIL.COM> wrote: I mentioned some years ago that because some/most of the waveguide/Karplus-Strong algorithms (repluck, wgpluck, etc.) seem to use integer sample-level delay lengths, you'll often find their tuning accuracy leaves much to be desired (for instance, really badly beating octaves, depending on how the frequency falls in your closest approximation of number of samples by sample-rate). IIRC, 'pluck' was fine, but 'pluck' has rather limited timbral adjustment parameters. Other DSP libraries like 'pyo' seem to do this correctly, and use Lagrangian frequency interpolation on delay-lines to get arbitrary accuracy. Are there any plans to get Lagrangian interpolation into the bulk of the string physical models? For my musical purposes, they are unfortunately unusable. How easy would it be to volunteer to improve these opcodes and code the pitch accuracy into them myself? Aaron Krister Johnson http://www.untwelve.org Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-07-17 21:36
From	Ffanci Silvain
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	Hey hey, is the integer nature of the pluck opcodes and other Karpus-Strong opcodes in Csound the reason for irate pitch as well? I was wondering why "bending" notes was excluded. Ta-ta, ---- Ffanci * Homepage: https://freeshell.de/~silvain * Twitter: http://twitter.com/ffanci_silvain * GitHub: https://github.com/fsilvain Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-07-17 21:52
From	Victor Lazzarini
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	I am not quite sure repluck and wgpluck can be easily tweaked. But I can have alook. Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy Maynooth University Ireland On 17 Jul 2016, at 20:57, Aaron Krister Johnson <akjmicro@GMAIL.COM> wrote: Yes! Or, tweak repluck and/or wgpluck to have better tuning. :) Is that a lot of work? Aaron Krister Johnson http://www.untwelve.org On Sun, Jul 17, 2016 at 2:43 PM, Victor Lazzarini <Victor.Lazzarini@nuim.ie> wrote: We don't even need lagrangian interpolation, allpass filters will tune it fine. The trouble is that repluck and wgpluck do not use any fine tuning. Streson does, for instance. I can write a pluck-like opcode with fine tuning if that's helpful, with pickup and pick position control. Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy Maynooth University Ireland On 17 Jul 2016, at 20:24, Aaron Krister Johnson <akjmicro@GMAIL.COM> wrote: I mentioned some years ago that because some/most of the waveguide/Karplus-Strong algorithms (repluck, wgpluck, etc.) seem to use integer sample-level delay lengths, you'll often find their tuning accuracy leaves much to be desired (for instance, really badly beating octaves, depending on how the frequency falls in your closest approximation of number of samples by sample-rate). IIRC, 'pluck' was fine, but 'pluck' has rather limited timbral adjustment parameters. Other DSP libraries like 'pyo' seem to do this correctly, and use Lagrangian frequency interpolation on delay-lines to get arbitrary accuracy. Are there any plans to get Lagrangian interpolation into the bulk of the string physical models? For my musical purposes, they are unfortunately unusable. How easy would it be to volunteer to improve these opcodes and code the pitch accuracy into them myself? Aaron Krister Johnson http://www.untwelve.org Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-07-17 21:53
From	Victor Lazzarini
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	you can bend notes with pluck alright. Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy Maynooth University Ireland > On 17 Jul 2016, at 21:36, Ffanci Silvain wrote: > > Hey hey, > is the integer nature of the pluck opcodes and other Karpus-Strong opcodes in Csound the reason for irate pitch as well? I was wondering why "bending" notes was excluded. > > Ta-ta, > ---- > Ffanci > * Homepage: https://freeshell.de/~silvain > * Twitter: http://twitter.com/ffanci_silvain > * GitHub: https://github.com/fsilvain > > Csound mailing list > Csound@listserv.heanet.ie > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > Send bugs reports to > https://github.com/csound/csound/issues > Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-07-18 04:09
From	Aaron Krister Johnson
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	Thanks for being willing to code this Victor. I'm interesting in learning the theory involved in it, as it pertains to actual C++ code. Thus, I'm interested in checking out the source code when you are done. BTW, will it also have an 'aexcite' parameter? That would be the most excellent and flexible of the 'pluck'-type opcodes if it does. On Jul 17, 2016 3:53 PM, "Victor Lazzarini" <Victor.Lazzarini@nuim.ie> wrote: you can bend notes with pluck alright. Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy Maynooth University Ireland > On 17 Jul 2016, at 21:36, Ffanci Silvain <silvain@FREESHELL.DE> wrote: > > Hey hey, > is the integer nature of the pluck opcodes and other Karpus-Strong opcodes in Csound the reason for irate pitch as well? I was wondering why "bending" notes was excluded. > > Ta-ta, > ---- > Ffanci > * Homepage: https://freeshell.de/~silvain > * Twitter: http://twitter.com/ffanci_silvain > * GitHub: https://github.com/fsilvain > > Csound mailing list > Csound@listserv.heanet.ie > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > Send bugs reports to > https://github.com/csound/csound/issues > Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-07-18 09:57
From	"Peter P."
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
Attachments	None

Date	2016-07-18 10:58
From	Victor Lazzarini
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	I’ll send you the code with comments when I get round to doing it. (I’m away on hols for the next fortnight though…) ======================== Dr Victor Lazzarini Dean of Arts, Celtic Studies and Philosophy, Maynooth University, Maynooth, Co Kildare, Ireland Tel: 00 353 7086936 Fax: 00 353 1 7086952 > On 18 Jul 2016, at 04:09, Aaron Krister Johnson wrote: > > Thanks for being willing to code this Victor. I'm interesting in learning the theory involved in it, as it pertains to actual C++ code. Thus, I'm interested in checking out the source code when you are done. > > BTW, will it also have an 'aexcite' parameter? That would be the most excellent and flexible of the 'pluck'-type opcodes if it does. > > On Jul 17, 2016 3:53 PM, "Victor Lazzarini" wrote: > you can bend notes with pluck alright. > > Victor Lazzarini > Dean of Arts, Celtic Studies, and Philosophy > Maynooth University > Ireland > > > On 17 Jul 2016, at 21:36, Ffanci Silvain wrote: > > > > Hey hey, > > is the integer nature of the pluck opcodes and other Karpus-Strong opcodes in Csound the reason for irate pitch as well? I was wondering why "bending" notes was excluded. > > > > Ta-ta, > > ---- > > Ffanci > > * Homepage: https://freeshell.de/~silvain > > * Twitter: http://twitter.com/ffanci_silvain > > * GitHub: https://github.com/fsilvain > > > > Csound mailing list > > Csound@listserv.heanet.ie > > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > > Send bugs reports to > > https://github.com/csound/csound/issues > > Discussions of bugs and features can be posted here > > Csound mailing list > Csound@listserv.heanet.ie > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > Send bugs reports to > https://github.com/csound/csound/issues > Discussions of bugs and features can be posted here > Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-07-19 17:26
From	Aaron Krister Johnson
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	Swwwweeet...have a good vacation Aaron Krister Johnson http://www.untwelve.org On Mon, Jul 18, 2016 at 4:58 AM, Victor Lazzarini <Victor.Lazzarini@nuim.ie> wrote: I’ll send you the code with comments when I get round to doing it. (I’m away on hols for the next fortnight though…) ======================== Dr Victor Lazzarini Dean of Arts, Celtic Studies and Philosophy, Maynooth University, Maynooth, Co Kildare, Ireland Tel: 00 353 7086936 Fax: 00 353 1 7086952 > On 18 Jul 2016, at 04:09, Aaron Krister Johnson <akjmicro@gmail.com> wrote: > > Thanks for being willing to code this Victor. I'm interesting in learning the theory involved in it, as it pertains to actual C++ code. Thus, I'm interested in checking out the source code when you are done. > > BTW, will it also have an 'aexcite' parameter? That would be the most excellent and flexible of the 'pluck'-type opcodes if it does. > > On Jul 17, 2016 3:53 PM, "Victor Lazzarini" <Victor.Lazzarini@nuim.ie> wrote: > you can bend notes with pluck alright. > > Victor Lazzarini > Dean of Arts, Celtic Studies, and Philosophy > Maynooth University > Ireland > > > On 17 Jul 2016, at 21:36, Ffanci Silvain <silvain@FREESHELL.DE> wrote: > > > > Hey hey, > > is the integer nature of the pluck opcodes and other Karpus-Strong opcodes in Csound the reason for irate pitch as well? I was wondering why "bending" notes was excluded. > > > > Ta-ta, > > ---- > > Ffanci > > * Homepage: https://freeshell.de/~silvain > > * Twitter: http://twitter.com/ffanci_silvain > > * GitHub: https://github.com/fsilvain > > > > Csound mailing list > > Csound@listserv.heanet.ie > > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > > Send bugs reports to > > https://github.com/csound/csound/issues > > Discussions of bugs and features can be posted here > > Csound mailing list > Csound@listserv.heanet.ie > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > Send bugs reports to > https://github.com/csound/csound/issues > Discussions of bugs and features can be posted here > Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-08-22 14:42
From	Aaron Krister Johnson
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	I'm curious if this is still on the radar...the Karplus-Strong algorithms in Csound, besides 'pluck', have tuning issues due to integer-only sample-lengths of the buffer. Victor, I think you said it would be an easy fix (via allpass filters). If not, I'm curious (and motivated) to do it myself at some point, but I'd need more DSP coding chops, so I'd need a good working example of some code. -A. Aaron Krister Johnson http://www.untwelve.org On Tue, Jul 19, 2016 at 11:26 AM, Aaron Krister Johnson <akjmicro@gmail.com> wrote: Swwwweeet...have a good vacation Aaron Krister Johnson http://www.untwelve.org On Mon, Jul 18, 2016 at 4:58 AM, Victor Lazzarini <Victor.Lazzarini@nuim.ie> wrote: I’ll send you the code with comments when I get round to doing it. (I’m away on hols for the next fortnight though…) ======================== Dr Victor Lazzarini Dean of Arts, Celtic Studies and Philosophy, Maynooth University, Maynooth, Co Kildare, Ireland Tel: 00 353 7086936 Fax: 00 353 1 7086952 > On 18 Jul 2016, at 04:09, Aaron Krister Johnson <akjmicro@gmail.com> wrote: > > Thanks for being willing to code this Victor. I'm interesting in learning the theory involved in it, as it pertains to actual C++ code. Thus, I'm interested in checking out the source code when you are done. > > BTW, will it also have an 'aexcite' parameter? That would be the most excellent and flexible of the 'pluck'-type opcodes if it does. > > On Jul 17, 2016 3:53 PM, "Victor Lazzarini" <Victor.Lazzarini@nuim.ie> wrote: > you can bend notes with pluck alright. > > Victor Lazzarini > Dean of Arts, Celtic Studies, and Philosophy > Maynooth University > Ireland > > > On 17 Jul 2016, at 21:36, Ffanci Silvain <silvain@FREESHELL.DE> wrote: > > > > Hey hey, > > is the integer nature of the pluck opcodes and other Karpus-Strong opcodes in Csound the reason for irate pitch as well? I was wondering why "bending" notes was excluded. > > > > Ta-ta, > > ---- > > Ffanci > > * Homepage: https://freeshell.de/~silvain > > * Twitter: http://twitter.com/ffanci_silvain > > * GitHub: https://github.com/fsilvain > > > > Csound mailing list > > Csound@listserv.heanet.ie > > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > > Send bugs reports to > > https://github.com/csound/csound/issues > > Discussions of bugs and features can be posted here > > Csound mailing list > Csound@listserv.heanet.ie > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > Send bugs reports to > https://github.com/csound/csound/issues > Discussions of bugs and features can be posted here > Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-08-22 15:22
From	Victor Lazzarini
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
Attachments	wguide.zip
	Hi Aaron, yes, it is in my todo list. I found this CSD (attached) in my computer which as I far as I remember is correct and will give you the idea. It has CsoundQT controls and responds to MIDI (mid file attached in the zip for fun). Look at Steiglitz's DSP Primer for a good intro into the allpass tuning. Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here best regards ======================== Dr Victor Lazzarini Dean of Arts, Celtic Studies and Philosophy, Maynooth University, Maynooth, Co Kildare, Ireland Tel: 00 353 7086936 Fax: 00 353 1 7086952 > On 22 Aug 2016, at 14:42, Aaron Krister Johnson wrote: > > I'm curious if this is still on the radar...the Karplus-Strong algorithms in Csound, besides 'pluck', have tuning issues due to integer-only sample-lengths of the buffer. Victor, I think you said it would be an easy fix (via allpass filters). If not, I'm curious (and motivated) to do it myself at some point, but I'd need more DSP coding chops, so I'd need a good working example of some code. > > -A. > > Aaron Krister Johnson > http://www.untwelve.org > > On Tue, Jul 19, 2016 at 11:26 AM, Aaron Krister Johnson wrote: > Swwwweeet...have a good vacation > > Aaron Krister Johnson > http://www.untwelve.org > > On Mon, Jul 18, 2016 at 4:58 AM, Victor Lazzarini wrote: > I’ll send you the code with comments when I get round to doing it. (I’m away on hols for the next > fortnight though…) > ======================== > Dr Victor Lazzarini > Dean of Arts, Celtic Studies and Philosophy, > Maynooth University, > Maynooth, Co Kildare, Ireland > Tel: 00 353 7086936 > Fax: 00 353 1 7086952 > > > On 18 Jul 2016, at 04:09, Aaron Krister Johnson wrote: > > > > Thanks for being willing to code this Victor. I'm interesting in learning the theory involved in it, as it pertains to actual C++ code. Thus, I'm interested in checking out the source code when you are done. > > > > BTW, will it also have an 'aexcite' parameter? That would be the most excellent and flexible of the 'pluck'-type opcodes if it does. > > > > On Jul 17, 2016 3:53 PM, "Victor Lazzarini" wrote: > > you can bend notes with pluck alright. > > > > Victor Lazzarini > > Dean of Arts, Celtic Studies, and Philosophy > > Maynooth University > > Ireland > > > > > On 17 Jul 2016, at 21:36, Ffanci Silvain wrote: > > > > > > Hey hey, > > > is the integer nature of the pluck opcodes and other Karpus-Strong opcodes in Csound the reason for irate pitch as well? I was wondering why "bending" notes was excluded. > > > > > > Ta-ta, > > > ---- > > > Ffanci > > > * Homepage: https://freeshell.de/~silvain > > > * Twitter: http://twitter.com/ffanci_silvain > > > * GitHub: https://github.com/fsilvain > > > > > > Csound mailing list > > > Csound@listserv.heanet.ie > > > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > > > Send bugs reports to > > > https://github.com/csound/csound/issues > > > Discussions of bugs and features can be posted here > > > > Csound mailing list > > Csound@listserv.heanet.ie > > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > > Send bugs reports to > > https://github.com/csound/csound/issues > > Discussions of bugs and features can be posted here > > Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here > > Csound mailing list > Csound@listserv.heanet.ie > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > Send bugs reports to > https://github.com/csound/csound/issues > Discussions of bugs and features can be posted here > > > Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-08-22 16:38
From	Aaron Krister Johnson
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	Excellent! Aaron Krister Johnson http://www.untwelve.org On Mon, Aug 22, 2016 at 9:22 AM, Victor Lazzarini <Victor.Lazzarini@nuim.ie> wrote: Hi Aaron, yes, it is in my todo list. I found this CSD (attached) in my computer which as I far as I remember is correct and will give you the idea. It has CsoundQT controls and responds to MIDI (mid file attached in the zip for fun). Look at Steiglitz's DSP Primer for a good intro into the allpass tuning. Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here best regards ======================== Dr Victor Lazzarini Dean of Arts, Celtic Studies and Philosophy, Maynooth University, Maynooth, Co Kildare, Ireland Tel: 00 353 7086936 Fax: 00 353 1 7086952 > On 22 Aug 2016, at 14:42, Aaron Krister Johnson <akjmicro@gmail.com> wrote: > > I'm curious if this is still on the radar...the Karplus-Strong algorithms in Csound, besides 'pluck', have tuning issues due to integer-only sample-lengths of the buffer. Victor, I think you said it would be an easy fix (via allpass filters). If not, I'm curious (and motivated) to do it myself at some point, but I'd need more DSP coding chops, so I'd need a good working example of some code. > > -A. > > Aaron Krister Johnson > http://www.untwelve.org > > On Tue, Jul 19, 2016 at 11:26 AM, Aaron Krister Johnson <akjmicro@gmail.com> wrote: > Swwwweeet...have a good vacation > > Aaron Krister Johnson > http://www.untwelve.org > > On Mon, Jul 18, 2016 at 4:58 AM, Victor Lazzarini <Victor.Lazzarini@nuim.ie> wrote: > I’ll send you the code with comments when I get round to doing it. (I’m away on hols for the next > fortnight though…) > ======================== > Dr Victor Lazzarini > Dean of Arts, Celtic Studies and Philosophy, > Maynooth University, > Maynooth, Co Kildare, Ireland > Tel: 00 353 7086936 > Fax: 00 353 1 7086952 > > > On 18 Jul 2016, at 04:09, Aaron Krister Johnson <akjmicro@gmail.com> wrote: > > > > Thanks for being willing to code this Victor. I'm interesting in learning the theory involved in it, as it pertains to actual C++ code. Thus, I'm interested in checking out the source code when you are done. > > > > BTW, will it also have an 'aexcite' parameter? That would be the most excellent and flexible of the 'pluck'-type opcodes if it does. > > > > On Jul 17, 2016 3:53 PM, "Victor Lazzarini" <Victor.Lazzarini@nuim.ie> wrote: > > you can bend notes with pluck alright. > > > > Victor Lazzarini > > Dean of Arts, Celtic Studies, and Philosophy > > Maynooth University > > Ireland > > > > > On 17 Jul 2016, at 21:36, Ffanci Silvain <silvain@FREESHELL.DE> wrote: > > > > > > Hey hey, > > > is the integer nature of the pluck opcodes and other Karpus-Strong opcodes in Csound the reason for irate pitch as well? I was wondering why "bending" notes was excluded. > > > > > > Ta-ta, > > > ---- > > > Ffanci > > > * Homepage: https://freeshell.de/~silvain > > > * Twitter: http://twitter.com/ffanci_silvain > > > * GitHub: https://github.com/fsilvain > > > > > > Csound mailing list > > > Csound@listserv.heanet.ie > > > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > > > Send bugs reports to > > > https://github.com/csound/csound/issues > > > Discussions of bugs and features can be posted here > > > > Csound mailing list > > Csound@listserv.heanet.ie > > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > > Send bugs reports to > > https://github.com/csound/csound/issues > > Discussions of bugs and features can be posted here > > Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here > > Csound mailing list > Csound@listserv.heanet.ie > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > Send bugs reports to > https://github.com/csound/csound/issues > Discussions of bugs and features can be posted here > > > Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-10-30 16:13
From	akjmicro
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	Victor, Should I just go with this attachment? Will it perform as well as a real compiled opcode? Or should I try my hand at coding an opcode? Cheers, AKJ -- View this message in context: http://csound.1045644.n5.nabble.com/Csnd-accuracy-of-tuning-with-the-Karplus-Strong-algorithms-tp5750648p5752359.html Sent from the Csound - General mailing list archive at Nabble.com. Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-10-30 16:16
From	jpff
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	What attachment? On Sun, 30 Oct 2016, akjmicro wrote: > Victor, > > Should I just go with this attachment? Will it perform as well as a real > compiled opcode? Or should I try my hand at coding an opcode? > > Cheers, > AKJ > > > > -- > View this message in context: http://csound.1045644.n5.nabble.com/Csnd-accuracy-of-tuning-with-the-Karplus-Strong-algorithms-tp5750648p5752359.html > Sent from the Csound - General mailing list archive at Nabble.com. > > Csound mailing list > Csound@listserv.heanet.ie > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > Send bugs reports to > https://github.com/csound/csound/issues > Discussions of bugs and features can be posted here > Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-10-30 16:22
From	Aaron Krister Johnson
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	Sorry -- the one Victor attached on 2016-08-22 in this thread...an UDO. Aaron Krister Johnson http://www.untwelve.org On Sun, Oct 30, 2016 at 11:16 AM, jpff <jpff@codemist.co.uk> wrote: What attachment? On Sun, 30 Oct 2016, akjmicro wrote: Victor, Should I just go with this attachment? Will it perform as well as a real compiled opcode? Or should I try my hand at coding an opcode? Cheers, AKJ -- View this message in context: http://csound.1045644.n5.nabble.com/Csnd-accuracy-of-tuning-with-the-Karplus-Strong-algorithms-tp5750648p5752359.html Sent from the Csound - General mailing list archive at Nabble.com. Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-10-30 16:33
From	Michael Gogins
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	Opcodes written in C or C++ will perform about 3 times faster than user-defined opcodes. You could also try writing an opcode in Lua using the LuaJIT opcodes, these run as fast as C but do not need a compiler, the LuaJIT opcodes include a runtime compiler. But actually coding such opcodes is harder than C or C++. I recommend using C++ with the OpcodeBase.hpp header file, such code is easier to read than C and just as fast. All of the plugin opcodes by me use OpcodeBase.hpp, take a look at Opcodes/stk/stkOpcodes.cpp and doppler.cpp. Regards, Mike ----------------------------------------------------- Michael Gogins Irreducible Productions http://michaelgogins.tumblr.com Michael dot Gogins at gmail dot com On Sun, Oct 30, 2016 at 12:16 PM, jpff wrote: > What attachment? > > > On Sun, 30 Oct 2016, akjmicro wrote: > >> Victor, >> >> Should I just go with this attachment? Will it perform as well as a real >> compiled opcode? Or should I try my hand at coding an opcode? >> >> Cheers, >> AKJ >> >> >> >> -- >> View this message in context: >> http://csound.1045644.n5.nabble.com/Csnd-accuracy-of-tuning-with-the-Karplus-Strong-algorithms-tp5750648p5752359.html >> Sent from the Csound - General mailing list archive at Nabble.com. >> >> Csound mailing list >> Csound@listserv.heanet.ie >> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND >> Send bugs reports to >> https://github.com/csound/csound/issues >> Discussions of bugs and features can be posted here >> > > Csound mailing list > Csound@listserv.heanet.ie > https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND > Send bugs reports to > https://github.com/csound/csound/issues > Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Date	2016-10-30 16:51
From	Victor Lazzarini
Subject	Re: accuracy of tuning with the Karplus-Strong algorithms
	you can try it and see if it works for you, if it doesn't you can try making it into an opcode, I can give you a hand. Incidentally, isn't there a string opcode that is properly tuned in the stk lib opcodes? Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy Maynooth University Ireland On 30 Oct 2016, at 16:23, Aaron Krister Johnson <akjmicro@GMAIL.COM> wrote: Sorry -- the one Victor attached on 2016-08-22 in this thread...an UDO. Aaron Krister Johnson http://www.untwelve.org On Sun, Oct 30, 2016 at 11:16 AM, jpff <jpff@codemist.co.uk> wrote: What attachment? On Sun, 30 Oct 2016, akjmicro wrote: Victor, Should I just go with this attachment? Will it perform as well as a real compiled opcode? Or should I try my hand at coding an opcode? Cheers, AKJ -- View this message in context: http://csound.1045644.n5.nabble.com/Csnd-accuracy-of-tuning-with-the-Karplus-Strong-algorithms-tp5750648p5752359.html Sent from the Csound - General mailing list archive at Nabble.com. Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here