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扬声器灵敏度,是考核扬声器电声转换效率的一个重要指标。电视机、收音机和录音机都用扬声器放声,所以整机声灵敏度的好坏,与扬声器有直接关系。这样,对扬声器灵敏度的准确测量,就显得非常重要了。扬声器生产厂和大量使用扬声器的整机厂,都有这样的经验,扬声器的灵敏度是随季节而变化的。在夏天时偏低,冬天时偏高。这种感性的认识是否正确呢?有否确定的规律,能否对扬声器灵敏度进行修正呢?这就是本文所要讨论的问题。实验表明,温度、湿度和大气压力的变化,都能引起扬声器灵敏度测量值的变化。这是有规律可循,并且能够做出定量修正的。
Speaker sensitivity, is to assess the speaker electro-acoustic conversion efficiency is an important indicator. TV sets, radios and tape recorders are loudspeaker, so the whole machine sound sensitivity is good or bad, and the speaker has a direct relationship. In this way, the accurate measurement of the speaker’s sensitivity, it is very important. The loudspeaker manufacturing plant and the extensive use of loudspeaker factory, have this experience, the sensitivity of the speaker changes with the seasons. Low in summer, high in winter. Is this kind of perceptual understanding correct? Is there any certain law that can correct the loudspeaker’s sensitivity? This is the question to be discussed in this article. Experiments show that the temperature, humidity and atmospheric pressure changes, can cause changes in the speaker sensitivity measurements. This is a rule that can be corrected quantitatively.