Sound source direction identification test system

Abstract

A sound source direction identification test system comprises a system host, a signal generator, a power amplifier, a sound source array, an isolation power supply and control software. The invention provides a sound source direction identification test system for measuring hearing thresholds of human ears. The sound source direction identification test system is a set of software and hardware combined test system for providing basis for diagnosing auditory diseases and judging hearing ability. Test signals are sent out through sound sources in different angle directions, a testee responds to the signals, and software judges the identification ability of the testee in all directions by acquiring response summary data of the testee; parameters such as direction, sequence and strength of each test can be arranged according to the assumption of a tester; special response equipment is arranged to record test data, and meanwhile, the data are arranged into related test results when the test is finished; and a tester can carry out free and flexible test design according to the conditions of different testees, so that the identification capability of the testees in all directions is judged.

Description

technical field [0001] The invention relates to the technical field of sound source direction identification, in particular to a sound source direction identification test system. Background technique [0002] Sound source direction identification is the audiometry of the sound field. The sound field refers to the area where sound waves exist in the medium; the physical quantity describing the sound field can be sound pressure, particle vibration velocity, displacement or medium density, etc., which are generally functions of position and time. The relationship between the change of these physical quantities in the sound field with the spatial position and the change with time is described by the acoustic wave equation, and the solution of the sound wave equation that satisfies the boundary conditions can be used to know the distribution of the sound field with space, the change with time and the energy relationship, etc. ; The sound field measurement system is a physical p...

AI Technical Summary

Problems solved by technology

[0003] The sound field audiometry equipment on the market has many limitations: first, there are very few directions of sound sources, and there are only 8 sound sources at most within a 360° range, resulting in insufficient accuracy of direction; second, the test mode is single, and the same time Only one sound source can send a signal; third, there is no test software for direction response, and existing equipment records test data through oral answers; fourth, existing equipment cannot establish a database for all test data record; fifth, the existing equipment cannot flexibly design the test

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