[PD] bit crusher abstraction

[Roman Haefeli]

On Thu, 2010-04-29 at 16:15 +0200, tim vets wrote:
> there's a very simple way do do 'sample rate reduction' (which is i
> think the sound you're looking for)
> [readsf~]
> |                [phasor~ 100]
> |                / 
> [samphold~]
> |
> instant lo-fi gratification :)

This is a crude way to reduce sample rate, but not quite so to reduce
bit depth.

I say crude, because if the frequency of the phasor~ is not a dividable
whole number of the sampling rate, it will additionally add some jitter
(which even enhances the lofi effect).

Reduced bit depth (which is what I think 'bit-crushing' means)  can be
achieved by dividing the signal by x, pass it through something like
[int~], multiply it by x again. An [int~] can be implemented by using
[wrap~] and [-~], which are both vanilla.

Roman


 
>  
> 2010/4/29 Pierre Massat <pimassat at gmail.com>
>         Same here! Only i want to use it, too. 
>         
>         Pierre
>         
>         2010/4/29 David Schaffer <schafferdavid at hotmail.com>
>                 
>                 Hi everybody, 
>                 
>                        I'd like to know if there's a bit crusher/
>                 lo-fi/ sonic destructor abs. somewhere out there. I'd
>                 like to take a look inside to see how it works, just
>                 out of curiosity.
>                 
>                 Thanks 
>                 
>                 D.S
>                 
>                 http://www.flickr.com/photos/schafferdavid/
>                 
>                 http://audioblog.arteradio.com/David_Schaffer/
>                 
>                 
>                 
>                 
>                 
>                 
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