demers

Attached is a patch that feeds a damped sinusoid (cycle~ scaled by phasor~) via poke~ into a buffer~. I've been trying to make it so whenever the specification for number of periods to enter into the buffer~ changes, the input starts at a zero point. There's an sah~ in the patch that should help with this, but doesn't, and I think the same kind of problem occurs when cycle~'s frequency is changed. So I'm stuck with a buffer~ that's out of phase (which creates problems on playback with wave~).

I could try, for instance, taking the output from phasor~ and putting it into the control inlet of [sah~ 0.] above, but of course that creates a signal loop and nothing happens.

I'd be grateful for your input, and sorry if I've overlooked something obvious!

syncing-cycle-input-into-poke-sah

You could do it like this, you don't have to use count~ I never used it before so it's a little exercise for me.

P.S. I just noticed that some of the envelopes were not ending exactly on 0.

Adding one sample to the buffer length (before sampstoms~) will solve this problem.

I'd be interested to see what you do with the patch.

Adding one sample to the buffer length (before sampstoms~) will solve this problem. 

Hi, It looks to me as if you are trying to do somethin glike FOF synthesis?

1. If so you may benefit from using the hard sync example in the examples

2. Also There is a nice fof generator in the FTM library which is free and

There is also a very good tutorial in the PD examples which shows how to

update the parameters at zero crossings. This might help with changing the

> Attached is a patch that feeds a damped sinusoid (cycle~ scaled by

> phasor~) via poke~ into a buffer~. I've been trying to make it so whenever

> the specification for number of periods to enter into the buffer~ changes,

> the input starts at a zero point. There's an sah~ in the patch that should

> help with this, but doesn't, and I think the same kind of problem occurs

> when cycle~'s frequency is changed. So I'm stuck with a buffer~ that's out

> of phase (which creates problems on playback with wave~).

> I could try, for instance, taking the output from phasor~ and putting it

> into the control inlet of [sah~ 0.] above, but of course that creates a

> I'd be grateful for your input, and sorry if I've overlooked something

> #P comment 181 27 58 9109513 # of periods;

> #P number 259 101 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;

> #P number 665 73 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;

> #X append 1 2 7 155 447 flonum float 0.4 ; 14 128 182 flonum float 1.25; 23 61 497 flonum float 46. ; 25 45 182 number int 8 ; 26 64 40 number

> #X append 1 2 18. ; 30 136 715 number int 524 ; 32 59 580 flonum float

> 1. ; 37 73 665 number int 10 ; 40 101 259 number int 512 ;;

> #P newex 580 108 50 9109513 pack 0. 0.;

> #P flonum 580 59 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;

> #P message 580 131 57 9109513 range $1 $2;

> #P number 715 136 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;

> #P user scope~ 580 157 725 291 2 3 256 -1. 1. 0 10. 0 0. 75 133 255 0 0 0

> #P flonum 326 131 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;

> #P number 40 64 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;

> #P number 182 45 35 9 1 0 1 139 0 0 0 221 221 221 222 222 222 0 0 0;

> #P flonum 497 61 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;

Hi, It looks to me as if you are trying to do somethin glike FOF synthesis?
Dampened sines

1. If so you may benefit from using the hard sync example in the examples
folder

2. Also There is a nice fof generator in the FTM library which is free and
the IRCAN object (not so free)

There is also a very good tutorial in the PD examples which shows how to
update the parameters at zero crossings. This might help with changing the
sine frequency.

On 11/12/2007, Inouk Demers  wrote:
>
>
> Hello all,
>
> Attached is a patch that feeds a damped sinusoid (cycle~ scaled by
> phasor~) via poke~ into a buffer~. I've been trying to make it so whenever
> the specification for number of periods to enter into the buffer~ changes,
> the input starts at a zero point. There's an sah~ in the patch that should
> help with this, but doesn't, and I think the same kind of problem occurs
> when cycle~'s frequency is changed. So I'm stuck with a buffer~ that's out
> of phase (which creates problems on playback with wave~).
>
> I could try, for instance, taking the output from phasor~ and putting it
> into the control inlet of [sah~ 0.] above, but of course that creates a
> signal loop and nothing happens.
>
> I'd be grateful for your input, and sorry if I've overlooked something
> obvious!
>
> Inouk
>
> #P window setfont "Sans Serif" 9.;
> #P window linecount 1;
> #P comment 181 27 58 9109513 # of periods;
> #P number 259 101 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P newex 182 148 28 9109513 sig~;
> #P newex 182 183 39 9109513 sah~ 0.;
> #P number 665 73 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P message 665 92 45 9109513 delay $1;
> #N vpreset 1;
> #X append 1 2 7 155 447 flonum float 0.4 ; 14 128 182 flonum float 1.25; 23 61 497 flonum float 46. ; 25 45 182 number int 8 ; 26 64 40 number
> int 10 ; 28 131 326 flonum float;
> #X append 1 2 18. ; 30 136 715 number int 524 ; 32 59 580 flonum float
> 1. ; 37 73 665 number int 10 ; 40 101 259 number int 512 ;;
> #P preset 282 282 47 27;
> #P newex 580 108 50 9109513 pack 0. 0.;
> #P newex 580 83 27 9109513 !- 0.;
> #P flonum 580 59 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P message 580 131 57 9109513 range $1 $2;
> #P number 715 136 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P user scope~ 580 157 725 291 2 3 256 -1. 1. 0 10. 0 0. 75 133 255 0 0 0
> 0;
> #P flonum 326 131 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P newex 182 67 27 9109513 t b f;
> #P number 40 64 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P number 182 45 35 9 1 0 1 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P newex 182 103 27 9109513 / 1.;
> #P flonum 497 61 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P newex 497 81 41 9109513 phasor~;
> #P newex 497 105 58 9109513 wave~ grain;
> #P newex 40 327 31 9109513 abs~;
> #P newex 213 295 38 9109513 *~ 512.;
> #P message 311 154 37 9109513 size $1;
> #P newex 259 130 62 9109513 sampstoms~;
> #P newex 182 269 29 9109513 +~ 1.;
> #P newex 182 242 31 9109513 *~ -1.;
> #P flonum 182 128 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P newex 39 351 358 9109513 poke~ grain;
> #P newex 40 301 27 9109513 *~;
> #P newex 311 179 93 9109513 buffer~ grain 200;
> #P newex 40 103 49 9109513 cycle~ 10;
> #P newex 182 208 47 9109513 phasor~;
> #P message 465 205 68 9109513 startwindow;
> #P flonum 447 155 35 9 0 0 0 139 0 0 0 221 221 221 222 222 222 0 0 0;
> #P newex 430 177 27 9109513 *~;
> #P user ezdac~ 430 235 474 268 0;
> #P window linecount 2;
> #P comment 326 98 68 9109513 or length in ms (independent);
> #P window linecount 1;
> #P comment 40 44 25 9109513 freq;
> #P comment 103 210 73 9109513 damps sinusoid;
> #P comment 258 81 62 9109513 buffer length;
> #P comment 496 40 55 9109513 wave~ freq;
> #P connect 20 0 13 0;
> #P connect 26 0 10 0;
> #P connect 10 0 12 0;
> #P connect 12 0 20 0;
> #P fasten 16 0 12 1 187 293 62 293;
> #P connect 25 0 27 0;
> #P fasten 26 0 24 0 45 91 187 91;
> #P connect 27 0 24 0;
> #P connect 24 0 14 0;
> #P connect 14 0 39 0;
> #P connect 39 0 38 0;
> #P connect 38 0 9 0;
> #P connect 9 0 15 0;
> #P connect 15 0 16 0;
> #P connect 27 1 24 1;
> #P fasten 10 0 38 1 45 174 216 174;
> #P fasten 9 0 19 0 187 233 218 233;
> #P connect 19 0 13 1;
> #P fasten 40 0 19 1 264 124 246 124;
> #P connect 40 0 17 0;
> #P connect 17 1 18 0;
> #P connect 28 0 18 0;
> #P connect 18 0 11 0;
> #P fasten 21 0 6 0 502 134 435 134;
> #P connect 6 0 5 0;
> #P fasten 8 0 5 0 470 228 435 228;
> #P connect 7 0 6 1;
> #P connect 23 0 22 0;
> #P connect 22 0 21 0;
> #P connect 32 0 33 0;
> #P connect 33 0 34 0;
> #P connect 34 0 31 0;
> #P fasten 21 0 29 0 502 152 585 152;
> #P fasten 36 0 29 0 670 153 585 153;
> #P connect 31 0 29 0;
> #P fasten 32 0 34 1 585 77 625 77;
> #P connect 37 0 36 0;
> #P connect 30 0 29 1;
> #P window clipboard copycount 42;
>
>

That's a fantastic solution. I should have known there was a way to apply count~ in there somehow, and you basically use it as a scaled phasor~ too! And I can use a float for number of periods now, which allows for some nice sweeps...

Now with any luck I'll be able to scale each bump of the FOF, and maybe start changing the distance between bumps, though I haven't figured out how to do that yet.

Anyway thanks so much for your help! And to all other posts for the helpful info on other sources.

> Now with any luck I'll be able to scale each bump of the FOF, and 

> maybe start changing the distance between bumps, though I haven't 

> Now with any luck I'll be able to scale each bump of the FOF, and  
> maybe start changing the distance between bumps, though I haven't  
> figured out how to do that yet.
>

sync'ing cycle~ input into poke~ (sah~?)