基于DDS技术的猝发声仪器设计

Development of the Tone Burst Instrument Based on DDS Technology

通过DDS(直接数字合成)技术的分析,阐明了DDS在相对带宽、高分辨率、频率转换时间、相位连续性、正交输出以及集成化等一系列性能指标方面远远超过了传统频率合成技术所能达到的水平,为系统提供了优于模拟信号源的性能。将DDS技术与单片机以及计算机技术结合,运用到猝发声仪器的设计中,实现了符合新的声级计检测标准的猝发声仪器的开发。

Based on analysis of the DDS technology which supplies better performance than that of analog signal source technology, a series of DDS performance data, such as relative bandwidth,high resolution and so on have far exceeded that of traditional frequency integration technology. With integration of DDS and computer technology, the tone burst instrument is well designed to meet the new testing standard of the sound level meter.