Circuit arrangement for deriving signals for masking audio signa

Circuit arrangement for gaining a stereo subcarrier and an...

Circuit arrangement for improving the signal-to-noise ratio

Circuit arrangement for influencing the frequency response of a

Circuit arrangement for receiving two modulating signals, more s

Circuit arrangement for reducing the dynamic range of audio...

Circuit arrangement for suppressing oscillations

Circuit arrangement for testing the connection of a sound...

Circuit arrangement for the recognition of adjacent channel inte

Circuit arrangements for modifying dynamic range using action su

Circuit for a flash stroboscope for examining vocal chord functi

Circuit for attenuating commercial interruptions during radio br

Circuit for automatic selection between speech and music sound s

Circuit for automatically adjusting input sensitivity of audio s

Circuit for automatically recognizing and receiving mono and ste

Circuit for controlling operator indicators in an AM stereo rece

Circuit for controlling separation and high-cut operation of a s

Circuit for controlling the frequency and/or phase response of a

Circuit for decoding a multiplex signal in a stereo receiver

Circuit for detecting the level of noise in FM signal for use in