On Thu, Dec 11, 2008 at 10:33:42PM +0100, Pierre Lorenzon wrote:
...
> Extrait de la doc d'ecasound que n'importe qui peut consulter
> me semble-t-il :
>
> -eal:limit-%
> Limiter effect. Limits audio level to 'limit-%'.
>
> -ec:rate,threshold-%
> Compressor (a simple one). 'rate' is the compression
> rate in decibels ('rate' dB change in input signal
> causes 1dB change in output). 'threshold' varies
> between 0.0 (silence) and 1.0 (max amplitude).
>
> -eca:peak-level-%, release-time-sec, fast-crate, crate
> A more advanced compressor (original algorithm by John
> S. Dyson). If you give a value of 0 to any parameter,
> the default is used. 'peak-level-%' essentially
> specifies how hard the peak limiter is pushed. The
> default of 69% is good. 'release_time' is given in
> seconds. This compressor is very sophisticated, and
> actually the release time is complex. This is one of
> the dominant release time controls, but the actual
> release time is dependent on a lot of factors
> regarding the dynamics of the audio in. 'fastrate' is
> the compression ratio for the fast compressor. This
> is not really the compression ratio. Value of 1.0 is
> infinity to one, while the default 0.50 is 2:1.
> Another really good value is special cased in the
> code: 0.25 is somewhat less than 2:1, and sounds super
> smooth. 'rate' is the compression ratio for the entire
> compressor chain. The default is 1.0, and holds the
> volume very constant without many nasty side effects.
> However the dynamics in music are severely restricted,
> and a value of 0.5 might keep the music more intact.
>
>
> Pierre
Beh tu vois que c'etait pas difficile de répondre, faut juste le vouloir c tout.
Merci Pierre.
Aldo.
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