摘要
短时程信号是听力学测试过程中需要用到的一种重要声刺激信号,其强度需要精确量化。针对现有的短时程信号峰-峰等效声压级测量方案中存在的过程复杂、操作烦琐的问题,设计并验证了两种简化的测量方案。第一种方案利用示波器直接测量放大后的短时程信号的电压峰-峰值,并结合已知的参数和公式计算结果。第二种方案使用声信号分析仪读取短时程信号的最大和最小声压值后直接计算出结果。验证结果表明,两种简化方案均能有效降低短时程信号峰-峰等效声压级测量难度,同时保持与传统方案同等的测量精度。
Short-duration signals are an important acoustic stimulus used in the process of hearing'diagnosis,and their intensity needs to be precisely quantified.Addressing the complexity and cumbersome nature of existing measurement schemes for the peak-to-peak equivalent sound pressure level of short-duration signals,two simplified measurement schemes have been designed and validated.The first scheme utilizes an oscilloscope to directly measure the voltage peak-to-peak value of the short-duration signal and calculates the result using known parameters and formula.The second scheme utilizes a sound signal analyzer to read the maximum and minimum sound pressure values of the short-duration signal and then directly calculates the result based on those values.The verification results show that the two simplified schemes can effectively reduce the difficulty of short-duration signal peak-to-peak equivalent sound pressure level measurement,while maintaining the same measurement accuracy as the traditional scheme.
作者
李耀祖
丁益
李自刚
王友
贾仿杰
LI Yaozu;DING Yi;LI Zigang;WANG You;JIA Fangjie(Hangzhou Aisiwei Instruments Co.,Ltd.,Hangzhou 311122,China;Shanghai Nuocheng Testing Co.,Ltd,Shanghai 201314,China;CAICT(Jiangsu)Science and Technology Innovation Institute Co.,Ltd.,Suzhou 215000,China)
出处
《电声技术》
2024年第9期192-196,共5页
Audio Engineering
关键词
短时程信号
峰-峰等效声压级
电压峰-峰值
声信号分析仪
short-duration signal
peak-to-peak equivalent sound pressure level
voltage peak-to-peak value
sound signal analyzer
