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Noise suppression for stereo radio - compresses lower and upper side bands of differential signal in stereo transmitter

机译:立体声无线电的噪声抑制-压缩立体声发射器中差分信号的上下边带

摘要

At the transmit side the differential signal (L-R) is changed, while the reception side has a level control in the differential signal. In the stereo transmitter (7), the lower (3) and the upper sidebands (4) of the differential signal are complementarily compressed and decompressed. The (di)compressed sidebands are used to form a stereo multiplex signal (MPx). In the other receiver (19) the signals (L-R) and (L+R) are recovered by a product detector (20). The recovered differential signals (L-R) and (L+R) are recovered by a product detector (2). The recovered differential signal (L-R) is used as a comparison level for the reception side decompression of the sideband, which has been filtered and demodulated in the receiver side prior to decomposition by a demodulator (24). USE/ADVANTAGE - Stereo broadcasting system, with better left-right cross-talk suppression.
机译:在发送端,差分信号(L-R)发生变化,而接收端对差分信号进行电平控制。在立体声发射机(7)中,差分信号的下边带(3)和上边带(4)被互补地压缩和解压缩。经过(双)压缩的边带用于形成立体声多路复用信号(MPx)。在另一个接收机(19)中,信号(L-R)和(L + R)由产品检测器(20)恢复。所恢复的差分信号(L-R)和(L + R)由产品检测器(2)恢复。所恢复的差分信号(L-R)用作边带的接收侧解压缩的比较电平,该边带在被解调器(24)分解之前已经在接收器侧被滤波和解调。使用/优势-立体声广播系统,具有更好的左右串扰抑制效果。

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