The designing method based on the chip MAX275 is introduced. The key points of the application of the chip in the system using the acousticimpulse are explained in details.
Acoustic impedance changes and hearing threshold shifts after exposure to impulse noise or air-blasts were studied in guinea pigs.
本文利用豚鼠研究了脉冲噪声和空气冲击波暴露后中耳声阻抗的变化和听阈偏移。
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Dealing with the concrete conditions of instrument system and its calibration tests, tbe method to determine the impulse response function of acoustic emission is introduced briefly.