| 摘要 |
PURPOSE:To enable not only basic signal processing but also various types of signal processing by a single device by providing a digital signal operating arithmetic part having a program memory for realizing all functions such as wave analysis and signal generation. CONSTITUTION:An analog signal input part 2 is constituted of an amplifier of variable gains, a filter of cut-off variable frequency and an A/D converter. An analog signal output part 7 is constituted of a D/A converter, a low-pass filter of cut-off variable frequency and an amplifier of variable gains. A control part 12 decodes commands to be transferred from the outside to a terminal 10, and sets parameters of the analog signal input part 2 and the output part 7. A digital signal processing arithmetic part 6 has a nonvolatile memory 13 to store programs realizing all functions such as wave analysis and signal generation and an arithmetic circuit 17, and in combination of the analog signal input part 2 and the analog signal output part 7 the processing arithmetic part 6 allows not only basic signal processing such as analysis and synthesization of signals and filtering but also multifunctional signal processing. |
