Re: [Csnd] distortion ftable

Date	2011-06-16 23:43
From	"Partev Barr Sarkissian"
Subject	Re: [Csnd] distortion ftable
	Cool! Being that I work at Line 6, I deal with amps made to sound like old style amps. And I've even owned a few of the real things in the past. Learned what makes them tick. A number of Line 6 amp model patches are designed to model,... yes, even the noise that goes with those old classic amp sounds. Enjoy. Now it's just a matter of noise adhust, EQ and just generally dialing it in to where you want it. Cheers, -Partev =========================================== --- adotsdothmusic@gmail.com wrote: From: Adam Puckett To: csound@lists.bath.ac.uk Subject: Re: [Csnd] distortion ftable Date: Thu, 16 Jun 2011 18:29:48 -0400 OK: sr = 44100 ksmps = 1 nchnls = 1 0dbfs = 1 instr 1 asig oscil .91, 60, 1 anoise rand .03 amix = asig+anoise out amix endin f1 0 8192 10 1 i1 0 20 e This sounds a little like my amp actually. On 6/16/11, Partev Barr Sarkissian wrote: > Take a 60-hz sine wave, get some low amplitude noise (random) > to ride on it, add it to the signal at a very low amplitude. > Then adjust that noise amplitude to suit your taste. > > -Partev > > ============================================================== > > --- oyvind.brandtsegg@ntnu.no wrote: > > From: Oeyvind Brandtsegg > To: csound@lists.bath.ac.uk > Subject: Re: [Csnd] distortion ftable > Date: Thu, 16 Jun 2011 17:27:30 +0200 > > Please try the other distortion techniques too. > I haven't used distort (or probably did a long time ago, but can't > remember how it sounds), > but distort1 sound quite ok, > lpf18 also has nice dist, > and the waveshaping techniques (experiment with different shapes) > and the slope based delay. > Run any combination of these in parallell and/or series, combine with > low pass filtering. > Tube amp distortion is no simple task, and you might have to model it > differently depending on your source signal and obviously also > depending on your taste and your idea of tube distortion. > best > Oeyvind > > 2011/6/16 Adam Puckett : >> Here's my CSD: >> >> >> >> -iadc2 -odac1 >> >> >> sr = 44100 >> ksmps = 1 >> nchnls = 2 >> 0dbfs = 1 >> instr 1 >> asig inch 1 >> awsh distort asig, 1, 5 >> outs awsh, awsh >> endin >> >> >> f5 0 8192 7 -.8 934 -.79 934 -.77 934 -.64 1034 -.48 520 .47 2300 .48 1536 >> .48 >> i1 0 120 >> e >> >> >> >> It doesn't sound like tube distortion. What changes do I need to make? >> >> On 6/16/11, Oeyvind Brandtsegg wrote: >>> You're right that you don't need to normalize when you're already at >>> 0dbfs=1. >>> >>> Is that code from Mikelson? >>> Hm, I didn' check, but remember it slightly different >>> >>> I thought it was more like: >>> >>> awsh tablei asig*0.5, itable, 1, 0.5, 0 ; awsh=output, asig=input >>> >>> so that >>> - the input signal has a range of -0.5 to +0.5 >>> - 4th arg to table = 0.5: the table index is offset by 0.5 (so our >>> asig lookup will be in the range 0.0 to 1.0) >>> - 5th arg to table = 0: no wraparound, as that will cause >>> discontinuities with the most usual transfer functions >>> >>> In case of doubt, you can alsways test your implementation by using a >>> linear transfer function (line from -1 to +1), >>> and your output signal should be exactly equal to the input signal. >>> >>> best >>> Oeyvind >>> >>> 2011/6/16 Adam Puckett : >>>> From this code, I can assume that by "waveshaping you mean something >>>> like: >>>> >>>> awsh tablei asig, itable, 1, 0, 1 ; awsh=output, asig=input >>>> >>>> Am I right? And what would I do for 0dbfs = 1? Seems like I wouldn't >>>> need to do all this normalization because 0dbfs is already 0 to 1. >>>> >>>> Thanks for your help. >>>> >>>> Adam >>>> >>>> On 6/16/11, Oeyvind Brandtsegg wrote: >>>>> Hello Adam, >>>>> Distort1 should work nicely. >>>>> >>>>> You could use distort1 to generate a waveshape table, but then you >>>>> could just as well use distort1 I think, as you can tweak the >>>>> parameters on distort1 (but on on a wavetable). You can probably find >>>>> a lot of transfer functions for different tube amps on the net. >>>>> Experimenting with waveshaping is a good way to search for 'your own' >>>>> distortion. >>>>> >>>>> Also, check out the slope based delay distortion in orchestra (instr >>>>> 13 in http://www.csounds.com/mikelson/multifx.orc) >>>>> >>>>> best >>>>> Oeyvind >>>>> >>>>> 2011/6/16 Adam Puckett : >>>>>> Hey guys, >>>>>> >>>>>> I'd like to find a way to distort my guitar with Csound as if I'm >>>>>> playing it with an amplifier with distortion. How can I, using the >>>>>> distort opcode, make an ftable that would do this? Or could I use >>>>>> distort1? >>>>>> >>>>>> Thanks, >>>>>> >>>>>> Adam >>>>>> >>>>>> >>>>>> Send bugs reports to the Sourceforge bug tracker >>>>>> >>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>>>>> 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 tracker >>>>> >>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>>>> 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 tracker >>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>>> 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 tracker >>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>> 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 tracker >> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >> 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 tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe > csound" > > > > > > _____________________________________________________________ > Netscape. Just the Net You Need. > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > 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 tracker https://sourceforge.net/tracker/?group_id=81968&atid=564599 Discussions of bugs and features can be posted here To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" _____________________________________________________________ Netscape. Just the Net You Need. Send bugs reports to the Sourceforge bug tracker https://sourceforge.net/tracker/?group_id=81968&atid=564599 Discussions of bugs and features can be posted here To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"

Date	2011-06-16 23:47
From	Adam Puckett
Subject	Re: [Csnd] distortion ftable
	Partev, How exactly am I supposed to use that CSD? All it does is make a sine wave and noise. Should I add an input signal on top of that mix? On 6/16/11, Partev Barr Sarkissian wrote: > Cool! Being that I work at Line 6, I deal with > amps made to sound like old style amps. And I've > even owned a few of the real things in the past. > Learned what makes them tick. A number of Line 6 > amp model patches are designed to model,... yes, > even the noise that goes with those old classic > amp sounds. Enjoy. > > Now it's just a matter of noise adhust, EQ and just > generally dialing it in to where you want it. > > > Cheers, > -Partev > > > =========================================== > > > > --- adotsdothmusic@gmail.com wrote: > > From: Adam Puckett > To: csound@lists.bath.ac.uk > Subject: Re: [Csnd] distortion ftable > Date: Thu, 16 Jun 2011 18:29:48 -0400 > > OK: > > > > sr = 44100 > ksmps = 1 > nchnls = 1 > 0dbfs = 1 > instr 1 > asig oscil .91, 60, 1 > anoise rand .03 > amix = asig+anoise > out amix > endin > > > f1 0 8192 10 1 > i1 0 20 > e > > > > This sounds a little like my amp actually. > > On 6/16/11, Partev Barr Sarkissian wrote: >> Take a 60-hz sine wave, get some low amplitude noise (random) >> to ride on it, add it to the signal at a very low amplitude. >> Then adjust that noise amplitude to suit your taste. >> >> -Partev >> >> ============================================================== >> >> --- oyvind.brandtsegg@ntnu.no wrote: >> >> From: Oeyvind Brandtsegg >> To: csound@lists.bath.ac.uk >> Subject: Re: [Csnd] distortion ftable >> Date: Thu, 16 Jun 2011 17:27:30 +0200 >> >> Please try the other distortion techniques too. >> I haven't used distort (or probably did a long time ago, but can't >> remember how it sounds), >> but distort1 sound quite ok, >> lpf18 also has nice dist, >> and the waveshaping techniques (experiment with different shapes) >> and the slope based delay. >> Run any combination of these in parallell and/or series, combine with >> low pass filtering. >> Tube amp distortion is no simple task, and you might have to model it >> differently depending on your source signal and obviously also >> depending on your taste and your idea of tube distortion. >> best >> Oeyvind >> >> 2011/6/16 Adam Puckett : >>> Here's my CSD: >>> >>> >>> >>> -iadc2 -odac1 >>> >>> >>> sr = 44100 >>> ksmps = 1 >>> nchnls = 2 >>> 0dbfs = 1 >>> instr 1 >>> asig inch 1 >>> awsh distort asig, 1, 5 >>> outs awsh, awsh >>> endin >>> >>> >>> f5 0 8192 7 -.8 934 -.79 934 -.77 934 -.64 1034 -.48 520 .47 2300 .48 >>> 1536 >>> .48 >>> i1 0 120 >>> e >>> >>> >>> >>> It doesn't sound like tube distortion. What changes do I need to make? >>> >>> On 6/16/11, Oeyvind Brandtsegg wrote: >>>> You're right that you don't need to normalize when you're already at >>>> 0dbfs=1. >>>> >>>> Is that code from Mikelson? >>>> Hm, I didn' check, but remember it slightly different >>>> >>>> I thought it was more like: >>>> >>>> awsh tablei asig*0.5, itable, 1, 0.5, 0 ; awsh=output, asig=input >>>> >>>> so that >>>> - the input signal has a range of -0.5 to +0.5 >>>> - 4th arg to table = 0.5: the table index is offset by 0.5 (so our >>>> asig lookup will be in the range 0.0 to 1.0) >>>> - 5th arg to table = 0: no wraparound, as that will cause >>>> discontinuities with the most usual transfer functions >>>> >>>> In case of doubt, you can alsways test your implementation by using a >>>> linear transfer function (line from -1 to +1), >>>> and your output signal should be exactly equal to the input signal. >>>> >>>> best >>>> Oeyvind >>>> >>>> 2011/6/16 Adam Puckett : >>>>> From this code, I can assume that by "waveshaping you mean something >>>>> like: >>>>> >>>>> awsh tablei asig, itable, 1, 0, 1 ; awsh=output, asig=input >>>>> >>>>> Am I right? And what would I do for 0dbfs = 1? Seems like I wouldn't >>>>> need to do all this normalization because 0dbfs is already 0 to 1. >>>>> >>>>> Thanks for your help. >>>>> >>>>> Adam >>>>> >>>>> On 6/16/11, Oeyvind Brandtsegg wrote: >>>>>> Hello Adam, >>>>>> Distort1 should work nicely. >>>>>> >>>>>> You could use distort1 to generate a waveshape table, but then you >>>>>> could just as well use distort1 I think, as you can tweak the >>>>>> parameters on distort1 (but on on a wavetable). You can probably find >>>>>> a lot of transfer functions for different tube amps on the net. >>>>>> Experimenting with waveshaping is a good way to search for 'your own' >>>>>> distortion. >>>>>> >>>>>> Also, check out the slope based delay distortion in orchestra (instr >>>>>> 13 in http://www.csounds.com/mikelson/multifx.orc) >>>>>> >>>>>> best >>>>>> Oeyvind >>>>>> >>>>>> 2011/6/16 Adam Puckett : >>>>>>> Hey guys, >>>>>>> >>>>>>> I'd like to find a way to distort my guitar with Csound as if I'm >>>>>>> playing it with an amplifier with distortion. How can I, using the >>>>>>> distort opcode, make an ftable that would do this? Or could I use >>>>>>> distort1? >>>>>>> >>>>>>> Thanks, >>>>>>> >>>>>>> Adam >>>>>>> >>>>>>> >>>>>>> Send bugs reports to the Sourceforge bug tracker >>>>>>> >>>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>>>>>> 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 tracker >>>>>> >>>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>>>>> 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 tracker >>>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>>>> 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 tracker >>>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>>> 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 tracker >>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>> 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 tracker >> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >> Discussions of bugs and features can be posted here >> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe >> csound" >> >> >> >> >> >> _____________________________________________________________ >> Netscape. Just the Net You Need. >> Send bugs reports to the Sourceforge bug tracker >> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >> 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 tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe > csound" > > > > > > _____________________________________________________________ > Netscape. Just the Net You Need. > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > 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 tracker https://sourceforge.net/tracker/?group_id=81968&atid=564599 Discussions of bugs and features can be posted here To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"