Peptides and mimetics of selected domains of mammalian serum amyloid A isoform 2. Each of the one or more menu options is coupled to one or more respective console listeners such that there is at least one listener per menu option amongst the menu options. A vector of estimated noise components is determined based on the first vector spectral speech components, and a speech section correction factor and a nonspeech section correction factor are calculated from the estimated noise components and the first-vector spectral speech components to produce a combined correction factor. The buoy suspension fractionation system can be used in a method of isolating a fraction from a suspension, and in a method for re-suspending particulates for withdrawal.