Random number generator

[CesarChaussinand]

I don't think there is a random number generation function that could be used as is by beginners. When i want to use random values as a modulation source for a synthesizer, i do it this way :
rng = (_,_,no.noise<:!,_,!,_,!,!,!,!,_:select2(_))~_;
I can simply use a pulse coming from a button or a ba.pulse to change the value to a random number between -1 and 1.

This function can be difficult to understand for beginners yet adding randomness to a simple synthesizer can make it way more interesting. Is it worth adding to the faust libraries ? If yes, where should i put it, noises.lib ? Is there a more efficient way to implement such function ?

[sletz]

I don't understand the !,_,!,_,!,!,!,!,_ intermediate part ?

[CesarChaussinand]

it's to route the input of the function to the input of select2

[CesarChaussinand]

The select2 switch between the last output (when the input is 0) and a noise (when the input is 1). So each time the function get a 1, it outputs a random number and stick to it.

[CesarChaussinand]

[sletz]

Would using theroute primitive make it simpler to read ?

[CesarChaussinand]

Indead
rng = (_,_,no.noise:route(3,3,(1,2),(2,1),(3,3)):select2(_))~_;

[sletz]

Why not that: rng = (_,_,no.noise:route(3,3,(1,2),(2,1),(3,3)):select2)~_; ?

[CesarChaussinand]

Perfect !

[sletz]

But same as no.noise : ba.sAndH(button("gate")); AFAICS ?

[CesarChaussinand]

Oh ! I forgot about the sAndH function. I think it is simple enough that way, even for those who aren't familiar with the ~ connector.
Thank you.

[sletz]

Always better not to reinvent the wheel !

[josmithiii]

Also, you can use ba.latch in place of ba.sAndH to ensure one new random number, instead of a short noise burst: process = no.noise : ba.latch(button("Next")) : hbargraph("Value",-1,1);

…

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