著名的 Hilber 变换可克服相移方法产生单边带信号所面临的主要问题——即要想获得好的瞬时特性必须在宽带内得到正交的调制信号,这个变换采用两根计时的模拟延迟线和一个电阻加权网络。这个简单的线路将调制(音频)信号分为两个相同的分量,但相位差90°。这种方法的优点是在宽的音频范围内保持正交,超过一般的 RC 网络,它可使系统完全抑制不需要的 The well-known Hilbert transform overcomes the main problem faced by the phase-shift method in generating single-sideband signals-that is, in order to obtain good instantaneous characteristics, an orthogonal modulated signal must be obtained over a wide bandwidth, using two timed analog delay lines And a resistor-weighted network. This simple line divides the modulated (audio) signal into two equal components, but with a 90 ° out of phase. The advantage of this approach is that it stays orthogonal over a wide audio range over the average RC network, which allows the system to completely reject unwanted