Nth logik

i am curious to know if anyone could lend some help to give me an understanding of how i can create tools to produce irregular sounds (with use of math opcodes like SIN/SINH/ASIN/COS/COSH/TAN/ATAN/ABS/LOG/LOG10/SQRT/etc)

the type of math i seek to build a synth tool with would represent similarly in such programs like syd 1.07 or quack sound studio 4.1

the type of math i seek to build a synth tool with would represent    similarly in such programs like syd 1.07 or quack sound studio 4.1


mathematical-expression-help-plz

i'm looking for any help with math expressional equations that could alter an oscillator to produce irregular sound data (sounds that are not a sine/sawtooth/square/impulse and not in a regulatory flowing pattern that is) with the 2 programs i mentioned earlier. syd 1.07, it has a widget called an expression evaluator and you can click upon it and enter into a text field a certain line of math that,.. the more complex the equation, the more complex the sound rendered will be and i was hoping to emulate that in any way possible. Quack sound studio 4.1 is another type of modular studio like that. and it has a granular, math & a wave module that could accept similar equations as syd can like the ones below:

i've tested these equations in syd, they work fine with the ƒ(x)

i've tested these equations in syd, they work fine with the ƒ(x)
module

i just got done building a patch that is somewhat close to an expression evaluator (sound mangler) that i would like to create but i would like to rather alter the whole process by entering a singular or group of equations to alter the one or more EXPR objects i have tied into it,... not have to stop all audio just to change the individual EXPR objects to furtherly complex it....

> i just got done building a patch that is somewhat close to an expression evaluator (sound mangler) that i would like to create but i would like to rather alter the whole process by entering a singular or group of equations to alter the one or more EXPR objects i have tied into it,... not have to stop all audio just to change the individual EXPR objects to furtherly complex it....

I don't think this abstraction is what you're looking for, but maybe 

it's useful. (If you can be a little more clear in your request, if it 

is a request, then you should try.) Haven't used it in a while but it 

should be pretty easy to figure out. I call the below patch [xpr] 

I also made a vexpr version and a js version. The js doesn't need to 

interrupt anything, but it's not as fast IIRC... (The js version is a 

cheap arbitrary injected-function grapher that's supposed to have 

universal scaling, but that part is not quite right because I haven't 

put the effort in. It's also a security nightmare.) Let me know if you 

want either of those, or if someone wants to fix the js up properly.

enth lojeek wrote:
> i just got done building a patch that is somewhat close to an expression evaluator (sound mangler) that i would like to create but i would like to rather alter the whole process by entering a singular or group of equations to alter the one or more EXPR objects i have tied into it,... not have to stop all audio just to change the individual EXPR objects to furtherly complex it....

I don't think this abstraction is what you're looking for, but maybe 
it's useful.  (If you can be a little more clear in your request, if it 
is a request, then you should try.)  Haven't used it in a while but it 
should be pretty easy to figure out.  I call the below patch [xpr] 
because I'm super-creative.

I also made a vexpr version and a js version.  The js doesn't need to 
interrupt anything, but it's not as fast IIRC...  (The js version is a 
cheap arbitrary injected-function grapher that's supposed to have 
universal scaling, but that part is not quite right because I haven't 
put the effort in.  It's also a security nightmare.)  Let me know if you 
want either of those, or if someone wants to fix the js up properly.

> i've tested these equations in syd, they work fine with the ƒ(x)

The equations look a bit like a waveshaper. You could look into 

waveshaping and use the equations for altering the transfer function in 

a buffer. I think there are some examples in the examples folder...

If you want to do it directly, beware that MSP rate is fast and these 

math functions are expensive. Usually a wavetable is much much much more 

enth lojeek wrote:
> i've tested these equations in syd, they work fine with the ƒ(x)
>  module
>
> cos(t*156*tan(145*t))
>
> tanh(cos(t*106/cos3(430*t))) 

You got at least some math ;-)
The equations look a bit like a waveshaper. You could look into 
waveshaping and use the equations for altering the transfer function in 
a buffer. I think there are some examples in the examples folder...

If you want to do it directly, beware that MSP rate is fast and these 
math functions are expensive. Usually a wavetable is much much much more 
effective...

-- 
Stefan Tiedje------------x-------
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mathematical expression help plz ?