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This paper describes a macromodeling of operational amplifiers for sound effect circuit design. The modular macromodel of operational amplifiers has been investigated for distortion circuits. The macromodel includes the voltage limiting stage with accurate power supply voltages. The macromodel has been implemented in a circuit simulator and the output voltages are compared with experimental data for...
This paper describes a germanium diode model for sound effect circuit design. The parameters of the diode model have been investigated by comparing with experimental data. In lower voltage regions, the parameters of the SPICE library have been compared with experimental current voltage characteristics. A diode model with accurate parameters has been proposed. The diode model has been implemented into...
In this paper, we propose a robot system which can take visitors on guided tours in a museum. When we consider developing a robot capable of giving a tour of an actual museum, we must implement a robot system able to measure the location and orientation of the robot and visitors using bearing sensors installed in a specific environment. Although many previous methods employed markers or tags attached...
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