Patent ID: 6631193
Filing Date: 2003-10-07
Classification: G10L,H04S

Abstract:
A method for enhancing left (L) and right (R) audio signals, comprising the steps of:dividing the left and right speaker signals into low range (LLF, RLF), mid-range (LMR and RMR) and high range (RHF and LHF) frequency signals; summing LMR and RMR to produce LMR+RMR; subtracting LMR from RMR to produce RMRâˆ’LMR; subtracting RMR from LMR to produce LMRâˆ’RMR; shifting LMR+RMR to produce shifted mid-range sum signal; shifting one of RMRâˆ’LMR and LMRâˆ’RMR to produce shifted mid-range difference signal; inverting the shifted mid-range sum signal to produce inverted mid-range sum signal; combining LMR+RMR, shifted mid-range sum signal, LMRâˆ’RMR, shifted mid-range difference signal, LLF, and LHF to produce an enhanced left audio signal; and combining LMR+RMR, inverted mid-range sum signal, RMRâˆ’LMR, shifted mid-range difference signal, RLF, and RHF to produce an enhanced right audio signal.