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现代扩声、录音都广泛使用传声器将声振动转换成电的信号。这种声电换能器件至今已有近一世纪的发展历史。随着电子学及其他技术的发展,现在传声器正朝着提高音质和多样化这两个目标蓬勃发展。传声器按其换能原理可分为炭粒传声器、压电传声器、动圈传声器、铝带传声器、电容传声器、驻极体传声器。按其指向性来划分,则有圆形、8字形、心形、超心形、强指向、抛物面传声器等形式。从使用过程中提出的要求,尤其舞台、电视等近距拾音的需要而发展起来的传声器还有小型传声器、无线传声器。下面概述一下传声器的主要技术参数及其应用的一些问题。灵敏度:传声器的灵敏度是指在一定的声压下测得的输出电压,并以频率在1千赫时输出之毫伏/微
Modern sound reinforcement, recording are widely used microphone to convert acoustic vibration into electrical signals. This acoustoelectric transducer has been developed nearly a century. As electronics and other technologies have evolved, microphones are now thriving on the two goals of improving sound quality and diversity. Microphone according to its principle can be divided into carbon microphones microphones, piezoelectric microphones, moving coil microphones, aluminum microphones, condenser microphones, microphones. Divided according to their directivity, there are round, 8-shaped, heart-shaped, super-heart-shaped, strong point, parabolic microphone and other forms. Requirements from the use of the process, in particular, stage, television and other needs of the recent pickups developed microphones, microphones, wireless microphones. The following overview of the microphone’s main technical parameters and some of its problems. Sensitivity: Microphone sensitivity refers to the measured output voltage at a certain sound pressure, and the output frequency at 1 kHz millivolt / micro