Stereo widening over arbitrarily-configured loudspeakers

摘要

A system and method are disclosed for effective and simple stereo widening over arbitrarily-configured speakers and its real-time implementation. According to one embodiment, the system includes five processing units: (1) elevation processing unit; (2) side signal or difference signal processing unit; (3) center signal processing unit; (4) binaural signal processing unit; and (5) stereo limiter (to prevent the clipping) unit. Any of the five processing units may be included or omitted depending on the application. In general, embodiments of the present invention provide effective and simple stereo widening schemes with good audio quality results, but without having substantial requirements on the speakers' positional configuration. For example, the proposed schemes can apply to both symmetric and non-symmetric stereo loudspeakers.

主权项

1. A stereo widening system for a stereo signal reproducible on a pair of arbitrarily-positioned loudspeakers in a listening space, comprising:
an elevation processing unit operable to receive the stereo signal and generate a first output signal having added elevation and enhanced sound brightness to the stereo signal and adjusted for the arbitrary-positioned loudspeakers; a side signal processing unit operable to receive the first output signal and generate a second output signal having a widened stereo image to the stereo signal and adjusted for the arbitrary-positioned loudspeakers; and a center signal processing unit operable to receive the second output signal and generate a third output signal having a further widened stereo image to the stereo signal and adjusted for the arbitrary-positioned loudspeakers.