On Mon, Oct 16, 2006 at 07:48:35PM +0100, Dan Mills wrote:
> The gain control signal has energy right the way out
> to the band limit (and probably aliased around it),
> never mind what happens when that hits the multiplier!
The question is: how much of this HF energy is there ?
There shouldn't be much in a compressor with controlled
attack / release times. In that case it is always possible
to filter the control signal. In fact the obvious way to set
attack / release times is by such filtering !
A fast peak limiter could still do this. But even here it can
be avoided by look-ahead, i.e. having a short delay on the
audio which in turn allows a finite attack time.
A fast limiter needs a higher sample rate or interpolation
anyway, just to detect the correct peak level. Remember that
'THE SAMPLES ARE NOT THE SIGNAL'. The real peak level of a
signal when converted to the analog domain can be several
dB above that of the highest sample.
-- FA Lascia la spina, cogli la rosa.Received on Wed Oct 18 00:15:01 2006
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