(unknown)
Date | 2016-04-17 16:01 |
From | "Joe ." |
Subject | (unknown) |
Is there a logical/ historical reason why if you have something like
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aMod poscil 10, 5 aCar poscil 0.3, 440+aMod the aMod input values become hz and times per second? Is there some material someone can direct me to about this? thanks- Joe |
Date | 2016-04-17 16:07 |
From | Hlöðver Sigurðsson |
Subject | (unknown) |
aCar will swing from 430Hz to 450Hz 5 times a second. This is just a vibrato effect, similar to a cellist shaking his finger on a bowed string. 2016-04-17 17:01 GMT+02:00 Joe . <not007ful@gmail.com>:
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Date | 2016-04-17 16:10 |
From | jpff |
Subject | (unknown) |
Npot sure I understand the qurstion. The ame poscil comes from Precise OSCILator and giving a frequency inn Hz is very nirmal. What is the problem? ==John ff On Sun, 17 Apr 2016, Joe . wrote: > Is there a logical/ historical reason why if you have something likeaMod > poscil 10, 5 > > aCar poscil 0.3, 440+aMod > > the aMod input values become hz and times per second? Is there some material s > omeone > > can direct me to about this? thanks- > Joe > 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 | 2016-04-17 16:20 |
From | "Joe ." |
Subject | (unknown) |
My question is, how does the first input (10), which is normally the amplitude input, become +- 10? Also, how does the amplitude input become an input for frequency? another question I have now is exactly what makes poscil more accurate than oscil? thanks and sorry for all the stupid questions- Joe Joe On Sun, Apr 17, 2016 at 11:10 PM, jpff <jpff@codemist.co.uk> wrote: Npot sure I understand the qurstion. The ame poscil comes from Precise OSCILator and giving a frequency inn Hz is very nirmal. What is the problem? |
Date | 2016-04-17 17:05 |
From | jpff |
Subject | (unknown) |
On Sun, 17 Apr 2016, Joe . wrote: > My question is, how does the first input (10), which is normally the amplitude > input, become +- 10? Also, how does the amplitude input become an input for > frequency? the first poscil generates a stream of values between -10 and +10 sinusoidal -- 10*sin(wt). It is not an amplitude, just a function When added to 440 it generates 440+10sin(wt) which is a slowly varying value from 430 to 440; tat is then used as a frequency. > another question I have now is exactly what makes poscil more accurate than > oscil? Thew it interpolates between values not stored in the table. poscil uses floating point index and oscil uses integer as I remember. In time-critical performance oscil is aster and may not be sonnnically too bad..... Oscil3 uses cubic interpolation rater than linear. ll in the Audio Programming Book > > thanks and sorry for all the stupid questions- > Joe As any academic knows the only stupid question is the one you do not ask ==John ff 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 | 2016-04-17 17:21 |
From | "Joe ." |
Subject | (unknown) |
Ah. Very well explained. Thank you. "As any academic knows the only stupid question is the one you do not ask" hahaha, we'll see if you still think that by the time I'm done with my questions... Joe On Mon, Apr 18, 2016 at 12:05 AM, jpff <jpff@codemist.co.uk> wrote:
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Date | 2016-04-17 17:48 |
From | Hlöðver Sigurðsson |
Subject | (unknown) |
"slowly varying value from 430 to 440" If sin(pi/2) = 1 and sin(3pi/2) = -12016-04-17 18:21 GMT+02:00 Joe . <not007ful@gmail.com>:
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Date | 2016-04-17 20:45 |
From | Peter Burgess |
Subject | (unknown) |
"hahaha, we'll see if you still think that by the time I'm done with my questions..." Don't worry, they're still putting up with my stupid questions, and I've been at it almost a year now On Sun, Apr 17, 2016 at 5:48 PM, Hlöðver Sigurðsson |
Date | 2016-04-17 21:01 |
From | jpff |
Subject | (unknown) |
Of course -- my typo On Sun, 17 Apr 2016, Hlöðver Sigurðsson wrote: > "slowly varying value from 430 to 440" > > If sin(pi/2) = 1 and sin(3pi/2) = -1 > > Then it should be varying values from 430 to 450, except poscil is reading > from negative uniformal sinoid table. > > 2016-04-17 18:21 GMT+02:00 Joe . |