Research And Development Of Electro-acoustic Comprehensive Tester

Traditional platform for the implementation of acoustic measurement technology is based on analog instrument system,and the system has some shortcomings such as expensive,complex,slow,inefficient,input and output way not friendly and so on.With the development of computer technology and digital technology,on the basis of the computer system of digital measuring system is developing rapidly.Using computer analysis,processing functions and powerful developing software can analyze the measurement result,so as to realize quality management for the measured object,and it also can widely online measure the production line;In addition,through the software continuously upgrade and optimization can further increase system measurement function,improving the measuring accuracy of the system.Considering about computer aided measurement of acoustic measurement system at home and abroad are mostly applicable to professional,offline measurement,its detection speed is slow,and its price is quite high,so it is not suitable for online measurement and promotion.This paper developed a set of electro-acoustic comprehensive test system on the base of referencing domestic and foreign speaker measurement system,and combined with virtual instrument technology.The system is a set of virtual acoustic measuring instrument based on Windows operating system,and it can accurately detect the frequency response,impedance,and polarity of acoustic products with relevant judgment and statistics to achieve the effective control of the electro-acoustic product quality.First of all,the paper introduces the present development of acoustic measurement technology,and then the measuring principle of the system and the working principle of the acoustic products especially speaker are summarized.On this base,this paper introduces the acoustic measurement system of each module of the hardware design and software design.At last,it expounded the construction of the hardware platform,software of measurement system debugging and testing results.Figures:67,Tables:6,References:53...