On Sat, Oct 07, 2006 at 02:18:24PM +0100, Dan Mills wrote: > If those sort of settings are to be available in a software compressor > then we need upsampling as the bandwidth of the sidechain must be at > least 10Khz (and possibly much higher) and the product of a 10Khz > bandwidth sidechain and a 20Khz bandwidth audio stream exceeds 1/2 the > SR for 44.1 and 48Khz.
While we're on this subject, has anyone analysed the aliasing behaviour of the LADSPA compressors? This post reminded me of an article I read in the AES journal a while back, and a search on aes.org found it: Aliasing in Digital Clippers and Compressors - Paul Kraght - Nov 2000 AES Journal The author refers to some previous work by Mapes-Riordan, who has a quick overview of the problem here: http://www.omniaaudio.com/tech/dynamics.htm As Ben Loftis points out, it might be nice to address any potential problems here before the inevitable growth of interest from high end users. John
