What would be the most simple way of getting a patch to start playing white noise, and then over a pre-determined length of time, for it to filter into a sine wave?

I'm thinking that using the [bp~] object to filter the [noise~] through to a very narrow "Q" range may do this... or an approximation at least.

i missed this thread the first time round, and it looks like there are some great suggestions,

but to turn white noise into a sine wave, you could turn the problem on its head.

first, start with a sine wave. then apply modulations to bash it up and turn it into noise.

whatever process you followed, then reverse, and you will turn the noise back into a sine wave.

not tried this in practice, but i guess it would probably work. hardest thing is going to be getting really white noise from a sine wave.

How typically mod, turning everything into white noise

the only method i know which COULD work would be modular arithmetic everything else i remember isn't bijective.
but you would loose some bits due floating point precision
who wants to implement it?

My contrib

An fm-feedback voice

mvh

http://www.pdpatchrepo.info/hurleur/sine2noise.pd

nice... and back to the topic too
but maybe you should use a function for the noise part which has a distribution function that doesn't focus so much on 1 and -1. like a triangle
i tried expr~ $v1*1+0*abs($v1) after the noise sin and think it sounds warmer
and maybe a second control to soften the generated noise at lower noise values

because nobody understands what i've written here i made a quit and dirty patch

http://www.pdpatchrepo.info/hurleur/sine2noise2.pd

@slur said:

i tried expr~ $v1*1+0*abs($v1) ...

Doesn't that just equal $v1?

Sounds cool, though.

@pulsed said:

My contrib

An fm-feedback voice

mvh

Very nice indeed... is there a way to make the sine to noise slider increase in more precise increments i.e. smaller units than just whole numbers.

Think this would give an even smoother transition from sine to noise.

number boxes and sliders can be shift dragged for finer grain resolution

mhv

@Maelstorm said:

@slur said:

i tried expr~ $v1*1+0*abs($v1) ...

Doesn't that just equal $v1?

Sounds cool, though.

damn this was the test equation.... i usually deleted *1+0
resulting in expr~ $v1*abs($v1)