On Tue, Oct 17, 2006 at 11:56:20AM +0200, Fons Adriaensen wrote: > 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 !
True, but if the audio signal contains significant HF energy near the band limit, it doesn't take a very fast gain change to push it past that. Bear in mind that the ear is _very_ sensitive to aliasing artifacts, so `significant' can be a very small amount. John
