Closer to natural hearing
Warp™ processing forms the backbone of Surround Sound by ReSound. In addition to establishing Wide Dynamic Range Compression as a method to compensate for the lost compressive non-linearity of the damaged cochlea, ReSound is the first and only manufacturer to base amplification on an accurate model of cochlear frequency analysis through frequency warping. While most digital techniques for frequency analysis yield constant bandwidth with uniform spacing of the bands, the ReSound system efficiently resolves frequencies into 17 smoothly overlapping frequency bands corresponding to the auditory Bark scale. The Bark scale incorporates the human auditory system critical bandwidth as the scale unit. Apart from the intuitive logic of a scheme which replicates auditory system frequency analysis, frequency warping has the added advantages of effectively no distortion and exceedingly short processing delay.