| 摘要 |
PURPOSE:To obtain a frequency analyzer of simple hardware by storing beforehand the discrimination outputs of the highest possibility in the storage position of an ROM of which the addresses are the outputs of plural threshold detectors. CONSTITUTION:The input signal converted to a common intermediate frequency signal with a frequency conversion circuit 30 is split by BPFs 7a- of a narrow band and the split signals are detected with threshold detectors 8a-. With the outputs of these detectors 8a- as addresses, an ROM which is provided in a discrimination circuit 9 and in which the discriminated frequency outputs of the highest possibility are stored is accessed. Hence, the need for intricate logical processing circuit is eliminated and the frequency analyzer of simple hardware is obtained. |
