synthesizer generates 19-kHz pilot tone for FM baseband signal


Posted on Mar 16, 2013

This Design Idea presents a low-cost method of generating the basic 19-kHz pilot tone. The 19-kHz pilot tone comprises a baseband signal, and the L+R and LR signals consist of DSBSC (double-sideband-suppressed-carrier) modulation centered at 38 kHz. For a receiver to correctly demodulate the signal, the transmitted pilot tone and LR signal must synchronize at their respective zero crossings.






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