1. A digital waveform concatenation system for use in an acoustic processing application, the system comprising: a digital waveform provider that produces an input sequence of at least two digital waveform segments, each waveform segment being a sequence of samples; and a waveform concatenator that synchronizes, weights, and overlap-adds selected portions of the input segments to concatenate the input segments by using waveform blending within a concatenation zone to produce a single digital waveform; wherein the synchronizing includes aligning minimum energy anchors in each input segment, each minimum energy anchor location being optimized based on determining minimum weighted energy in the selected portion.