公开(公告)号：WO2005094529A2

公开(公告)日：2005-10-13

申请号：PCT/US2005/009867

申请日：2005-03-24

Applicant: THAT CORPORATION ,  BARNHILL, Matthew ,  DARR, Roger

Inventor： BARNHILL, Matthew ,  DARR, Roger

IPC: H04R5/00 ,  H04S3/02

CPC classification number: H04S3/02

Abstract: A television audio signal encoder includes a matrix that sums a left channel audio signal and a right channel audio signal to produce a sum signal. The matrix also subtracts one of the left and right audio signals from the other to produce a difference signal. The encoder also includes a configurable infinite impulse response digital filter that selectively uses one or more sets of filter coefficients to filter the difference signal. Each selectable set of filter coefficients is associated with a unique filtering application to prepare the difference signal for transmission.

Abstract translation: 电视音频信号编码器包括将左声道音频信号和右声道音频信号相加以产生和信号的矩阵。 矩阵还从另一个中减去左右音频信号中的一个以产生差分信号。 编码器还包括可配置的无限脉冲响应数字滤波器，其选择性地使用一组或多组滤波器系数来滤波差分信号。 每个可选择的滤波器系数集合与唯一的滤波应用相关联，以准备用于传输的差分信号。