[PD] average amp of a soundfile

[Thomas Grill]

Hi,
interestingly, up till now there was no means in vasp for that....
however, if you check it out from cvs tomorrow morning you'll find a
vasp.sum? object for this kind of things.

In the pd-ex/vasp_qsum.pd help file you'll also find an example for RMS
calculation which i think is what you want to do.
In principle it does the following:

[vasp buf( -> [vasp.sqr] -> [vasp.sum?] -> [/ samples ] -> [sqrt] -> RMS
value

There will hopefully be a more elegant (non-destructible though in-place)
way for that in the future......

best greetings,
Thomas

----- Original Message -----
From: "Josh Steiner" <joschi at eds.org>
To: "Hans-Christoph Steiner" <hans at eds.org>
Cc: <pd-list at iem.kug.ac.at>
Sent: Thursday, March 20, 2003 8:30 PM
Subject: Re: [PD] average amp of a soundfile


> sorry if you knew about this already, but you probably want to use VASP
> for this:
>
> http://www.parasitaere-kapazitaeten.net/ext/
>
> "VASP is a package for PD or Max/MSP consisting of a number of externals
> extending these systems with functions for non-realtime array-based
> audio data processing. VASP is capable of working in the background,
> therefore not influencing eventual dsp signal processing."
>
> i've not actually done anything with it yet, so i'd love to hear how it
> goes if you do.
>
> -josh
>
> Hans-Christoph Steiner wrote:
>
> >I want to find the overall average amplitude of a soundfile.  I want the
> >processing to happen as quick as possible.  I have tried a various
> >methods, but have not gotten something to work satisfactorily.
> >
> >Anyone have any working examples of this?
> >
> >.hc
> >
> > zen
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