| 摘要 |
PURPOSE:To cipher signals, by rearranging sample value train of a signal waveform. CONSTITUTION:An audio signal inputted to a microphone 1 or input terminal 2 is given to a demultiplexer (analog switch) 5 via an amplifier 3, Nyquist filter 4. The demultiplexer 5 is connected to an output selected for the input by an address, scanning is made with a clock input 10 at a counter 11 and each sample value group is stored to each capacitor 15. The stored sample value is given to an amplifier 7 via the multiplexer 6 and the order of readout is changed. That is, the digital word being scanning address giving input to the address input of the demultiplexer 5 and the address input of the multiplexer 6 are replaced to form a specified delay map. This replacement is made according to the conversion table 12. |
