公开(公告)号：US5708718A

公开(公告)日：1998-01-13

申请号：US605751

申请日：1996-02-22

申请人： Paul R. Ambourn ,  Robert Stockman

发明人： Paul R. Ambourn ,  Robert Stockman

IPC分类号： H04S3/00 ,  H04S1/00

CPC分类号： H04S3/00

摘要： A surround sound processor system includes an in-phase decoder circuit, an out-of-phase decoder circuit, and a plurality of audio amplifiers. In a wireless embodiment, the surround sound processor system also includes a plurality of FM transmitters and a plurality of FM receivers. A surround sound process system can take the stereo audio signal from a stereo VCR, a stereo receiver, a car stereo, or a stereo TV to produce a three dimensional sound field. A left audio signal and a right audio signal are input into an in-phase decoder, the in-phase audio signals are extracted from the left and right audio signals while the out-of-phase audio signals are canceled. The in-phase audio signals are sent to an audio amplifier and then to at least one center speaker. A left audio signal and a right audio signal are input into an out-of-phase decoder, the out-of-phase audio signals are extracted from the left and right audio signals while the in-phase audio signals are canceled. The out-of-phase audio signals are sent to an audio amplifier and then to at least one rear speaker. The wireless surround sound processor utilizes an FM transmission link as opposed to hard wiring.

摘要翻译： 环绕声处理器系统包括同相解码器电路，异相解码器电路和多个音频放大器。 在无线实施例中，环绕声处理器系统还包括多个FM发射机和多个FM接收机。 环绕声处理系统可以从立体声VCR，立体声接收机，汽车立体声或立体声电视获取立体声音频信号，以产生三维声场。 将左音频信号和右音频信号输入到同相解码器中，同时从左和右音频信号中提取同相音频信号，同时消除异相音频信号。 同相音频信号被发送到音频放大器，然后发送到至少一个中心扬声器。 左音频信号和右音频信号被输入到异相解码器中，在同相音频信号被取消的同时，从左和右音频信号中提取出异相音频信号。 异相音频信号被发送到音频放大器，然后发送到至少一个后置扬声器。 无线环绕声处理器使用FM传输链路而不是硬布线。