Patent ID: 9674629
Date: 2017-06-06
CPC Classifications: H04R,H04S

Claim:
1. A method for selecting auditory signal components for reproduction in a loudspeaker setup having one or more physical supplementary sound reproducing transducers, such as loudspeakers, placed between a pair of primary sound reproducing transducers, such as left and right loudspeakers in a stereophonic loudspeaker setup or adjacent loudspeakers in a surround sound loudspeaker setup, the method comprising the steps of: (i) specifying an azimuth angle range within which one of said physical supplementary sound reproducing transducers is located or is to be located; (ii) based on said azimuth angle range, determining left and right interaural level difference limits and left and right interaural time difference limits from the binaural impulse responses for a source at each extreme azimuthal angle, respectively; (iii) providing a pair of input signals for said pair of primary sound reproducing transducers; (iv) pre-processing each of said input signals with binaural impulse responses for the pair of primary sound reproducing transducers, thereby providing a pair of pre-processed input-signals; (v) determining interaural level difference and interaural time difference as a function of frequency between said pre-processed signals; (vi) providing those signal components of said input signals that have interaural level differences and interaural time differences in the interval between said left and right interaural level difference limits, and left and right interaural time difference limits, respectively, to the corresponding physical supplementary sound reproducing transducer; and (vii) reproducing said signal components in said physical supplementary sound reproducing transducers.