[music-dsp] Peak limiter algorithm wanted

Bob Cain arcane at znet.com
Sat Sep 29 21:20:10 EDT 2001


Anders, for a limiter that is is simple and memory free see the
description of DBX Type IV at http://www.dbxpro.com/white.htm and select
the "Type IV Conversion System" from the listbox.  From the paper it
seems that it just uses a logarithmc table which maps -4 dB to +12 dB
into the region +4 dB to 0 dB.

Bob

Anders Torger wrote:
> 
> On Saturday 29 September 2001 22.45, you wrote:
> > Hi Anders,
> >
> > have you thought about using some sort of waveshaping? This way
> > you could turn the resulting "hard edges" of your clipped waveform
> > (non-continous first derivative) into something more smooth...
> > Just a guess, though... There are quite some waveshaping algos
> > in the music DSP source code archive and they are mostly
> > sensationally simple, so you could give it a try easily...
> 
> That was my first idea, but I thought perhaps there was some less low-tech
> standard algorithm to solve my problem. Now, after a day of searching and
> reading all I could find on the net, it seems like waveshaping is the way to
> go afterall, since it meets my requirements the best.
> 
> I just found the music-dsp source code archive, I shall look it through
> carefully. Thanks.
> 
> /Anders Torger
> 
> dupswapdrop -- the music-dsp mailing list and website: subscription info,
> FAQ, source code archive, list archive, book reviews, dsp links
> http://shoko.calarts.edu/musicdsp/

-- 

"Things should be described as simply as possible, but no simpler."

                                             A. Einstein


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