1. A method of creating a digital signal processing (DSP) filter to improve the transient response of a loudspeaker, wherein the loudspeaker is formed of multiple components, the method comprising: identifying a substantially linear, time-invariant, and spatially-consistent loudspeaker mechanism causing transient response distortion; characterizing the identified mechanism; determining the characterized mechanism's two-port response; establishing a target response for the characterized mechanism; calculating an ideal filter to achieve the target response; and designing a cost-reduced filter based on the ideal filter to thereby form a loudspeaker mechanism algorithm (LMA) filter.