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。

公开(公告)号：US4375058A

公开(公告)日：1983-02-22

申请号：US157133

申请日：1980-06-06

申请人： Herman Bouma ,  Dominicus G. Bouwhuis ,  Paulus M. Boers ,  Josephus C. Jacobs

发明人： Herman Bouma ,  Dominicus G. Bouwhuis ,  Paulus M. Boers ,  Josephus C. Jacobs

IPC分类号： G06F3/16 ,  G06K7/00 ,  G06K7/016 ,  G09B5/06 ,  G10H1/00 ,  G10L13/00 ,  G11B7/0033 ,  G11C8/00 ,  G06K7/10 ,  G10L1/00

CPC分类号： G11C8/00 ,  G09B5/062 ,  G10H1/0041 ,  G11B7/0033 ,  G10H2220/445

摘要： A carrier containing information which is suitable for visual perception, such as a text or a picture. By suitable positioning, a code also present on the carrier linked thereto. This code is visible to the user, but cannot be read directly. A device for reading the code having a scanner which can be moved into the area of the code by hand. The code is optically read, synchronization signals being obtained from the code itself. The information read is stored in an intermediate memory. The intermediate memory is subsequently read under the control of a clock. This data can either directly activate an acoustic generator for producing a sound signal, or can address an object memory which in its turn supplies data for controlling the acoustic generator. A sound signal is thus linked to the picture or the text. A device of this kind may form part of an educational system.

摘要翻译： 包含适合于视觉感知的信息的载体，例如文本或图片。 通过适当的定位，还存在于与其相关联的载体上的代码。 此代码对用户可见，但不能直接读取。 用于读取具有扫描器的代码的装置，其可以用手移动到代码区域中。 代码是光学读取的，同步信号从代码本身获得。 读取的信息存储在中间存储器中。 随后在时钟的控制下读取中间存储器。 该数据可以直接激活用于产生声音信号的声发生器，或者可以寻址对象存储器，该存储器又提供用于控制声发生器的数据。 因此，声音信号与图片或文本相关联。 这种设备可能构成教育系统的一部分。