公开(公告)号：US5528694A

公开(公告)日：1996-06-18

申请号：US186396

申请日：1994-01-25

申请人： Leon M. Van De Kerkhof ,  Paulus M. Boers ,  Hendrikus De Kluijver

发明人： Leon M. Van De Kerkhof ,  Paulus M. Boers ,  Hendrikus De Kluijver

IPC分类号： H04R3/12 ,  H04S1/00 ,  H04S3/00 ,  H04S5/02 ,  H03G3/00

CPC分类号： H04S5/00 ,  H04S2400/05

摘要： An audio signal processing arrangement includes a first filter (20) for splitting off signal components from the left channel signal (L) at least within one frequency band. Signal components are split off from the right channel signal (R) by a second filter (23). The output signals of the filters (20 and 23) are compared with the right channel signal (R) and the left channel signal (L), respectively. The filter parameters of the filters (20 and 23) are adjusted to values at which there is maximum correlation between the compared signals according to a given criterion. The center channel signal is derived in dependence on the filter adjustment. This can be effected by combining the output signals of the filters (20 and 23). In this manner, a center channel signal is obtained formed by the correlating left and right channel signal components, so that the stereo image is hardly disturbed by the addition of the center channel signal, whereas the perceived position of the virtual sources in the stereo image becomes less dependent on the listener's position with respect to the left and right loudspeakers.

摘要翻译： 音频信号处理装置包括：至少在一个频带内分离来自左声道信号（L）的信号分量的第一滤波器（20）。 信号分量通过第二滤波器（23）从右声道信号（R）分离。 滤波器（20和23）的输出信号分别与右声道信号（R）和左声道信号（L）进行比较。 滤波器（20和23）的滤波器参数根据给定的标准被调整为在比较的信号之间存在最大相关性的值。 中心通道信号依赖于滤波器调整而导出。 这可以通过组合滤波器（20和23）的输出信号来实现。 以这种方式，通过相关的左和右声道信号分量获得形成的中心声道信号，使得立体图像几乎不被中心声道信号的增加所扰乱，而立体图像中虚拟源的感知位置 听众对左右扬声器的位置变得较少依赖。