R: Re: [Csnd] UDO to have the max a signal amplitude as k variable

Date	2013-08-23 12:13
From	"vallste@libero.it"
Subject	R: Re: [Csnd] UDO to have the max a signal amplitude as k variable
	Is what I was saing before, in this line kMax max_k aSig, 1, 1 ktrig is a constant 1 By the way, I did try this (ktrig always 1) in other code and seems to work. >----Messaggio originale---- >Da: Victor.Lazzarini@nuim.ie >Data: 23/08/2013 13.09 >A: >Ogg: Re: [Csnd] UDO to have the max a signal amplitude as k variable > >kTrig is not being consumed in the code. Is that right? >On 23 Aug 2013, at 11:41, joachim heintz wrote: > >> no, but it is easy to get a trigger which increments in each k-period: >> >> >> >> -n >> >> >> ksmps = 32 >> instr 1 >> kTrig init 1 >> aSig rnd31 1, 0 >> kMax max_k aSig, 1, 1 >> printk 0, kMax >> kTrig = kTrig+1 >> endin >> >> >> i 1 0 .01 >> >> >> >> >> regards - >> >> joachim >> >> >> Am 23.08.2013 11:33, schrieb vallste@libero.it: >>> Hi Joachim, >>> this seems what I was looking for. Just one small doubt: if I set ktrig to a >>> constant 1 (no metro triggering or similar stuff) the output will be the max >>> reached in every kcycle, right? >>> >>>> ----Messaggio originale---- >>>> Da: jh@joachimheintz.de >>>> Data: 23/08/2013 9.52 >>>> A: >>>> Ogg: Re: [Csnd] UDO to have the max a signal amplitude as k variable >>>> >>>> hi stefano - >>>> >>>> i think no udo is needed here because max_k does what you wish?! >>>> >>>> best - >>>> >>>> joachim >>>> >>>> >>>> Am 22.08.2013 23:42, schrieb vallste@libero.it: >>>>> Hello, >>>>> >>>>> I'm developing this udo to have a krate variable indicating the maximum >>>>> value reached by a a-rate signal during a k-cycle. >>>>> >>>>> As far as I've understood downsamp opcode performs some averaging >>>>> (please correct me if I'm wrong) so not using it since I want the >>>>> absolute maximum reached. >>>>> >>>>> >>>>> opcode MaxAmpInKCycle, k, ak >>>>> setksmps 1 >>>>> ain, kperiod xin ;ain - input signal, kperiod = kspms >>>>> kcounter init 0 ;count from 0 to ksmps >>>>> kout init 0 ;output value >>>>> aamp = abs(ain) >>>>> kamp downsamp aamp >>>>> ;if above previous value update >>>>> kout = (kamp > kout ? kamp : kout) >>>>> kcounter = kcounter + 1 >>>>> if kcounter == kperiod then >>>>> ;reset value and counter >>>>> ;when reaching ksmps >>>>> kout = 0 >>>>> kcounter = 0 >>>>> endif >>>>> printk2 kcounter ; for testing >>>>> printk ksmps / sr, kout ; for testing >>>>> xout kout >>>>> endop >>>>> >>>>> >>>>> Not sure if it's working as expected, by printing values looks like that >>>>> the program using this opcode >>>>> >>>>> >>>>> instr 1 >>>>> >>>>> ainLH, ainRH diskin2 $INPUTFILE, 1, 0, 1 >>>>> printk ksmps / sr, 123 >>>>> kvalue MaxAmpInKCycle ainLH, 8 ; equal to ksmps >>>>> printk ksmps / sr, 456 >>>>> printk ksmps / sr, kvalue >>>>> printk ksmps / sr, 789 >>>>> >>>>> endin >>>>> >>>>> >>>>> is somehow out of phase: after having printed 789 (from the main >>>>> program), kcounter variable value (printed from inside the opcode) is >>>>> not 0 (don't know if caused by some kind of "printing buffer") so if >>>>> someone want give it a try/report results/find errors/have an idea of >>>>> what's happening and want to share is more than welcome. >>>>> >>>>> >>>>> I'm using 5.17 double from Ubuntu repository >>>>> >>>>> >>>>> Bye >>>>> >>>>> Stefano >>>>> >>>> >>>> >>>> Send bugs reports to the Sourceforge bug trackers >>>> csound6: >>>> https://sourceforge.net/p/csound/tickets/ >>>> csound5: >>>> https://sourceforge.net/p/csound/bugs/ >>>> Discussions of bugs and features can be posted here >>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe >>> csound" >>>> >>>> >>>> >>> >>> >>> >>> >>> Send bugs reports to the Sourceforge bug trackers >>> csound6: >>> https://sourceforge.net/p/csound/tickets/ >>> csound5: >>> https://sourceforge.net/p/csound/bugs/ >>> Discussions of bugs and features can be posted here >>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" >>> >>> >>> >> >> >> Send bugs reports to the Sourceforge bug trackers >> csound6: >> https://sourceforge.net/p/csound/tickets/ >> csound5: >> https://sourceforge.net/p/csound/bugs/ >> Discussions of bugs and features can be posted here >> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" >> >> > >Dr Victor Lazzarini >Senior Lecturer >Dept. of Music >NUI Maynooth Ireland >tel.: +353 1 708 3545 >Victor dot Lazzarini AT nuim dot ie > > > > > >Send bugs reports to the Sourceforge bug trackers >csound6: > https://sourceforge.net/p/csound/tickets/ >csound5: > https://sourceforge.net/p/csound/bugs/ >Discussions of bugs and features can be posted here >To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" > > >

Date	2013-08-23 12:59
From	joachim heintz
Subject	Re: R: Re: [Csnd] UDO to have the max a signal amplitude as k variable
	oh yes, i tried it at first with a wrong performance time and thought kTrig was needed. but as victor says, the code proves that black is white. so this is simple, and a constant 1 works. best - j Am 23.08.2013 13:13, schrieb vallste@libero.it: > Is what I was saing before, in this line > kMax max_k aSig, 1, 1 > ktrig is a constant 1 > By the way, I did try this (ktrig always 1) in other code and seems to work. > >> ----Messaggio originale---- >> Da: Victor.Lazzarini@nuim.ie >> Data: 23/08/2013 13.09 >> A: >> Ogg: Re: [Csnd] UDO to have the max a signal amplitude as k variable >> >> kTrig is not being consumed in the code. Is that right? >> On 23 Aug 2013, at 11:41, joachim heintz wrote: >> >>> no, but it is easy to get a trigger which increments in each k-period: >>> >>> >>> >>> -n >>> >>> >>> ksmps = 32 >>> instr 1 >>> kTrig init 1 >>> aSig rnd31 1, 0 >>> kMax max_k aSig, 1, 1 >>> printk 0, kMax >>> kTrig = kTrig+1 >>> endin >>> >>> >>> i 1 0 .01 >>> >>> >>> >>> >>> regards - >>> >>> joachim >>> >>> >>> Am 23.08.2013 11:33, schrieb vallste@libero.it: >>>> Hi Joachim, >>>> this seems what I was looking for. Just one small doubt: if I set ktrig to > a >>>> constant 1 (no metro triggering or similar stuff) the output will be the > max >>>> reached in every kcycle, right? >>>> >>>>> ----Messaggio originale---- >>>>> Da: jh@joachimheintz.de >>>>> Data: 23/08/2013 9.52 >>>>> A: >>>>> Ogg: Re: [Csnd] UDO to have the max a signal amplitude as k variable >>>>> >>>>> hi stefano - >>>>> >>>>> i think no udo is needed here because max_k does what you wish?! >>>>> >>>>> best - >>>>> >>>>> joachim >>>>> >>>>> >>>>> Am 22.08.2013 23:42, schrieb vallste@libero.it: >>>>>> Hello, >>>>>> >>>>>> I'm developing this udo to have a krate variable indicating the maximum >>>>>> value reached by a a-rate signal during a k-cycle. >>>>>> >>>>>> As far as I've understood downsamp opcode performs some averaging >>>>>> (please correct me if I'm wrong) so not using it since I want the >>>>>> absolute maximum reached. >>>>>> >>>>>> >>>>>> opcode MaxAmpInKCycle, k, ak >>>>>> setksmps 1 >>>>>> ain, kperiod xin ;ain - input signal, kperiod = kspms >>>>>> kcounter init 0 ;count from 0 to ksmps >>>>>> kout init 0 ;output value >>>>>> aamp = abs(ain) >>>>>> kamp downsamp aamp >>>>>> ;if above previous value update >>>>>> kout = (kamp > kout ? kamp : kout) >>>>>> kcounter = kcounter + 1 >>>>>> if kcounter == kperiod then >>>>>> ;reset value and counter >>>>>> ;when reaching ksmps >>>>>> kout = 0 >>>>>> kcounter = 0 >>>>>> endif >>>>>> printk2 kcounter ; for testing >>>>>> printk ksmps / sr, kout ; for testing >>>>>> xout kout >>>>>> endop >>>>>> >>>>>> >>>>>> Not sure if it's working as expected, by printing values looks like > that >>>>>> the program using this opcode >>>>>> >>>>>> >>>>>> instr 1 >>>>>> >>>>>> ainLH, ainRH diskin2 $INPUTFILE, 1, 0, 1 >>>>>> printk ksmps / sr, 123 >>>>>> kvalue MaxAmpInKCycle ainLH, 8 ; equal to ksmps >>>>>> printk ksmps / sr, 456 >>>>>> printk ksmps / sr, kvalue >>>>>> printk ksmps / sr, 789 >>>>>> >>>>>> endin >>>>>> >>>>>> >>>>>> is somehow out of phase: after having printed 789 (from the main >>>>>> program), kcounter variable value (printed from inside the opcode) is >>>>>> not 0 (don't know if caused by some kind of "printing buffer") so if >>>>>> someone want give it a try/report results/find errors/have an idea of >>>>>> what's happening and want to share is more than welcome. >>>>>> >>>>>> >>>>>> I'm using 5.17 double from Ubuntu repository >>>>>> >>>>>> >>>>>> Bye >>>>>> >>>>>> Stefano >>>>>> >>>>> >>>>> >>>>> Send bugs reports to the Sourceforge bug trackers >>>>> csound6: >>>>> https://sourceforge.net/p/csound/tickets/ >>>>> csound5: >>>>> https://sourceforge.net/p/csound/bugs/ >>>>> Discussions of bugs and features can be posted here >>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe >>>> csound" >>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> >>>> Send bugs reports to the Sourceforge bug trackers >>>> csound6: >>>> https://sourceforge.net/p/csound/tickets/ >>>> csound5: >>>> https://sourceforge.net/p/csound/bugs/ >>>> Discussions of bugs and features can be posted here >>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe > csound" >>>> >>>> >>>> >>> >>> >>> Send bugs reports to the Sourceforge bug trackers >>> csound6: >>> https://sourceforge.net/p/csound/tickets/ >>> csound5: >>> https://sourceforge.net/p/csound/bugs/ >>> Discussions of bugs and features can be posted here >>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe > csound" >>> >>> >> >> Dr Victor Lazzarini >> Senior Lecturer >> Dept. of Music >> NUI Maynooth Ireland >> tel.: +353 1 708 3545 >> Victor dot Lazzarini AT nuim dot ie >> >> >> >> >> >> Send bugs reports to the Sourceforge bug trackers >> csound6: >> https://sourceforge.net/p/csound/tickets/ >> csound5: >> https://sourceforge.net/p/csound/bugs/ >> Discussions of bugs and features can be posted here >> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe > csound" >> >> >> > > > > > Send bugs reports to the Sourceforge bug trackers > csound6: > https://sourceforge.net/p/csound/tickets/ > csound5: > https://sourceforge.net/p/csound/bugs/ > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" > > >