[Cs-dev] csound->sicvt and csdl.h

[Cs-dev] csound->sicvt and csdl.h

Date	2014-04-03 19:20
From	Gleb
Subject	[Cs-dev] csound->sicvt and csdl.h
	Hello list! I am writing a new opcode. It has to produce wave from ftable, so I decided to take oscil as the main template. At some point we need to increment phase of table oscillator and in oscil family of opcodes it is done with something like inc = MYFLT2LONG(p->xcps csound->sicvt); I am building a plugin opcode, so I include csdl.h, not csoundCore.h. It doesn't have sicvt, so of course I get error CSOUND has no member named 'sicvt' Please, tell me what should I use instead. grep -r "sicvt" gives csound->sicvt = FMAXLEN / csound->esr, so maybe I just use this expression, but maybe there's some other way Much thanks! ----- Gleb Rogozinsky, PhD Associated Professor Interactive Arts Department Saint-Petersburg University of Film and Television Deputy Director of Medialab Saint-Petersburg University of Telecommunications -- View this message in context: http://csound.1045644.n5.nabble.com/csound-sicvt-and-csdl-h-tp5733836.html Sent from the Csound - Dev mailing list archive at Nabble.com. ------------------------------------------------------------------------------ _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2014-04-03 20:31
From	Victor Lazzarini
Subject	Re: [Cs-dev] csound->sicvt and csdl.h
	That is for integral indexing, which is maybe not what you want. Try looking at Opcodes/uggab.c and the poscil opcodes, which use floating-point indexing, it's simpler and probably just as fast in modern machines. On 3 Apr 2014, at 19:20, Gleb wrote: > Hello list! > > I am writing a new opcode. It has to produce wave from ftable, so I decided > to take oscil as the main template. At some point we need to increment phase > of table oscillator and in oscil family of opcodes it is done with something > like > inc = MYFLT2LONG(p->xcps csound->sicvt); > > I am building a plugin opcode, so I include csdl.h, not csoundCore.h. It > doesn't have sicvt, so of course I get error CSOUND has no member named > 'sicvt' > > Please, tell me what should I use instead. grep -r "sicvt" gives > csound->sicvt = FMAXLEN / csound->esr, so maybe I just use this expression, > but maybe there's some other way > > Much thanks! > > > > ----- > Gleb Rogozinsky, PhD > Associated Professor > Interactive Arts Department > Saint-Petersburg University of Film and Television > > Deputy Director of Medialab > Saint-Petersburg University of Telecommunications > -- > View this message in context: http://csound.1045644.n5.nabble.com/csound-sicvt-and-csdl-h-tp5733836.html > Sent from the Csound - Dev mailing list archive at Nabble.com. > > ------------------------------------------------------------------------------ > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel Dr Victor Lazzarini Senior Lecturer Dept. of Music NUI Maynooth Ireland tel.: +353 1 708 3545 Victor dot Lazzarini AT nuim dot ie ------------------------------------------------------------------------------ _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2014-04-03 20:47
From	Gleb
Subject	Re: [Cs-dev] csound->sicvt and csdl.h
	Victor, thank you for help! ----- Gleb Rogozinsky, PhD Associated Professor Interactive Arts Department Saint-Petersburg University of Film and Television Deputy Director of Medialab Saint-Petersburg University of Telecommunications -- View this message in context: http://csound.1045644.n5.nabble.com/csound-sicvt-and-csdl-h-tp5733836p5733850.html Sent from the Csound - Dev mailing list archive at Nabble.com. ------------------------------------------------------------------------------ _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2014-04-03 22:58
From	Andres Cabrera
Subject	Re: [Cs-dev] csound->sicvt and csdl.h
Attachments	None None
	Hi, I have found that the integer phase opcodes are still faster on current hardware, in particular on mobile platforms. I had a student do an app which wouldn't run fast enough until he used code from csound's integer phase oscillators (He did need an unusually large number of oscillators, though...). Cheers, Andrés On Thu, Apr 3, 2014 at 12:31 PM, Victor Lazzarini <Victor.Lazzarini@nuim.ie> wrote: That is for integral indexing, which is maybe not what you want. Try looking at Opcodes/uggab.c and the poscil opcodes, which use floating-point indexing, it's simpler and probably just as fast in modern machines. On 3 Apr 2014, at 19:20, Gleb wrote: > Hello list! > > I am writing a new opcode. It has to produce wave from ftable, so I decided > to take oscil as the main template. At some point we need to increment phase > of table oscillator and in oscil family of opcodes it is done with something > like > inc = MYFLT2LONG(p->xcps csound->sicvt); > > I am building a plugin opcode, so I include csdl.h, not csoundCore.h. It > doesn't have sicvt, so of course I get error CSOUND has no member named > 'sicvt' > > Please, tell me what should I use instead. grep -r "sicvt" gives > csound->sicvt = FMAXLEN / csound->esr, so maybe I just use this expression, > but maybe there's some other way > > Much thanks! > > > > ----- > Gleb Rogozinsky, PhD > Associated Professor > Interactive Arts Department > Saint-Petersburg University of Film and Television > > Deputy Director of Medialab > Saint-Petersburg University of Telecommunications > -- > View this message in context: http://csound.1045644.n5.nabble.com/csound-sicvt-and-csdl-h-tp5733836.html > Sent from the Csound - Dev mailing list archive at Nabble.com. > > ------------------------------------------------------------------------------ > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel Dr Victor Lazzarini Senior Lecturer Dept. of Music NUI Maynooth Ireland tel.: +353 1 708 3545 Victor dot Lazzarini AT nuim dot ie ------------------------------------------------------------------------------ _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/csound-devel

Date	2014-04-04 07:55
From	Victor Lazzarini
Subject	Re: [Cs-dev] csound->sicvt and csdl.h
	Last time I did a comparison between oscili and poscil on my OSX laptop, there wasn't much difference and at times, poscil was marginally faster. But I expect that in some platforms it might be faster. For students, also, that's a great code to learn too. Victor On 3 Apr 2014, at 22:58, Andres Cabrera wrote: > Hi, > > I have found that the integer phase opcodes are still faster on current hardware, in particular on mobile platforms. I had a student do an app which wouldn't run fast enough until he used code from csound's integer phase oscillators (He did need an unusually large number of oscillators, though...). > > Cheers, > Andrés > > > On Thu, Apr 3, 2014 at 12:31 PM, Victor Lazzarini wrote: > That is for integral indexing, which is maybe not what you want. Try looking at > Opcodes/uggab.c and the poscil opcodes, which use floating-point indexing, it's simpler > and probably just as fast in modern machines. > > On 3 Apr 2014, at 19:20, Gleb wrote: > > > Hello list! > > > > I am writing a new opcode. It has to produce wave from ftable, so I decided > > to take oscil as the main template. At some point we need to increment phase > > of table oscillator and in oscil family of opcodes it is done with something > > like > > inc = MYFLT2LONG(p->xcps csound->sicvt); > > > > I am building a plugin opcode, so I include csdl.h, not csoundCore.h. It > > doesn't have sicvt, so of course I get error CSOUND has no member named > > 'sicvt' > > > > Please, tell me what should I use instead. grep -r "sicvt" gives > > csound->sicvt = FMAXLEN / csound->esr, so maybe I just use this expression, > > but maybe there's some other way > > > > Much thanks! > > > > > > > > ----- > > Gleb Rogozinsky, PhD > > Associated Professor > > Interactive Arts Department > > Saint-Petersburg University of Film and Television > > > > Deputy Director of Medialab > > Saint-Petersburg University of Telecommunications > > -- > > View this message in context: http://csound.1045644.n5.nabble.com/csound-sicvt-and-csdl-h-tp5733836.html > > Sent from the Csound - Dev mailing list archive at Nabble.com. > > > > ------------------------------------------------------------------------------ > > _______________________________________________ > > Csound-devel mailing list > > Csound-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/csound-devel > > Dr Victor Lazzarini > Senior Lecturer > Dept. of Music > NUI Maynooth Ireland > tel.: +353 1 708 3545 > Victor dot Lazzarini AT nuim dot ie > > > > > ------------------------------------------------------------------------------ > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel > > ------------------------------------------------------------------------------ > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel Dr Victor Lazzarini Senior Lecturer Dept. of Music NUI Maynooth Ireland tel.: +353 1 708 3545 Victor dot Lazzarini AT nuim dot ie ------------------------------------------------------------------------------ _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2014-04-04 09:37
From	Richard Dobson
Subject	Re: [Cs-dev] csound->sicvt and csdl.h
	A propos of which, I wrote about the Csound oscili code in the Programming Book (in the context of the bitwise operators, DVD Ch 3), with the code extracted as an option in a standalone program ("tabgen2"). Richard Dobson On 04/04/2014 07:55, Victor Lazzarini wrote: > Last time I did a comparison between oscili and poscil on my OSX > laptop, there wasn't much difference and at times, poscil was > marginally faster. But I expect that in some platforms it might be > faster. For students, also, that's a great code to learn too. > ------------------------------------------------------------------------------ _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2014-04-04 09:46
From	Victor Lazzarini
Subject	Re: [Cs-dev] csound->sicvt and csdl.h
	and an excellent text that one is, fully recommended. ======================== Dr Victor Lazzarini Senior Lecturer NUI Maynooth, Ireland victor dot lazzarini at nuim dot ie On 4 Apr 2014, at 09:37, Richard Dobson wrote: > A propos of which, > > I wrote about the Csound oscili code in the Programming Book (in the > context of the bitwise operators, DVD Ch 3), with the code extracted > as an option in a standalone program ("tabgen2"). > > Richard Dobson > > On 04/04/2014 07:55, Victor Lazzarini wrote: >> Last time I did a comparison between oscili and poscil on my OSX >> laptop, there wasn't much difference and at times, poscil was >> marginally faster. But I expect that in some platforms it might be >> faster. For students, also, that's a great code to learn too. >> > > > ------------------------------------------------------------------------------ > _______________________________________________ > Csound-devel mailing list > Csound-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/csound-devel ------------------------------------------------------------------------------ _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net

Date	2014-04-04 20:06
From	Gleb
Subject	Re: [Cs-dev] csound->sicvt and csdl.h
	oh.. thanks much to pointing me to this. It is very useful! ----- Gleb Rogozinsky, PhD Associated Professor Interactive Arts Department Saint-Petersburg University of Film and Television Deputy Director of Medialab Saint-Petersburg University of Telecommunications -- View this message in context: http://csound.1045644.n5.nabble.com/csound-sicvt-and-csdl-h-tp5733836p5733901.html Sent from the Csound - Dev mailing list archive at Nabble.com. ------------------------------------------------------------------------------ _______________________________________________ Csound-devel mailing list Csound-devel@lists.sourceforge.net