The term that means the same as 'discriminator' is: la detector. b varactor. cl filter. modulator. 2. An Amplitude Limiter can be used to la extract the audio modulation from the carrier. Db add an AM signal before the detector for test purposes. C limit the maximum value of frequency deviation. d remove noise from an FM signal. 3. The FM detector that uses a VCO is called a: al Ratio Detector. b PLL Detector. C Quadrature Detector. d Foster-Seeley Detector.