A low-cost architecture of audiometer based on direct digital synthesizer
Han‐Chang Wu, Li‐Ping Yang, Chien-Hao Chen, Shuenn-Tsong Young, Te‐Son Kuo · 2003
The authors propose a new architecture for audiometers. By utilizing a direct digital synthesizer (DDS), pure tone testing signals could be generated more precisely than by other existing techniques. A microcontroller was used to receive the stimulating commands from a PC and then send appropriate control signals to the DDS and the log attenuator. All components were assembled with compact size and low cost.