| 摘要 |
PURPOSE: A CW signal analysis device is provided so that CW signals can be decoded and a person can hear at the same time with receiving, and the reproduction process is done simply in a short time. CONSTITUTION: A CW analysis device consists of six parts. A signal input part selects input signals according to levels of input signals, and amplifies the signals at the stated level. An A/D conversion part receives the signals from the input part, and converts the signals into digital data. A CPU receives the output data from the A/D conversion part, changes the reproduction speed according to control signals so that a person can hear, and restore a timbre that is changed when signals are changed. A D/A conversion part converts the data from the CPU into analogue signals. A output amplifier amplifies the signals at the stated level. A output device outputs the voice signals. |
