目的：了解畸变产物耳声发射（ DPOAE）在监测噪声性聋方面的应用价值。

Objective:To understand the value of using distortion product of otoacoustic emissions(DPOAE)in monitoring noise induced hearing loss.

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本文介绍了模态声发射检测技术的基本原理、信号特征、噪声剔除和源定位等内容。

This paper introduces modal acoustic emission evaluation technique, including its fundamental principles, signal characteristic, noise rejection and source location etc.

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电磁检测方法主要有材料磁性量测、巴克好森噪声和磁声发射。

Magnetism measuring, Barkhausen noise and magnetic acoustic emission were often used for electromagnetic testing.

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