Re: [LAD] Rate of change damping in digital mixer controls

On Tue, Jan 28, 2014 at 03:34:39PM -1000, Joel Roth wrote: A pro-quality digital mixer will be designed to avoid clicks and zipper noise on all controls. Even on/off functions will be replaced by short fades. All plugins should internally smooth their parameters when a step change would generate artefacts and these would be unexpected for that type of plugin. There is no such thing as 'generalised rate damping'. It has to be done by the plugin code and not by the host because 1. only the plugin (or rather its author) knows what is required (it depends on both the function and the actual algorithm), 2. expecting a plugin to use already smoothed parameters (which would have to be audio rate) can make them very inefficient. As an example of [2], calculating the actual filter coefficients corresponding to the user parameters typically requires much more complicated calculations than the real filter algorithm. So any interpolation is done on the internal filter coefficients instead of the user parameters. In some cases doing that requires the user parameters to be rate-limited first. Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow)