听筒手柄是用来打电话的,打电话时,听筒的耳承要紧贴耳朵,口承要正好对着嘴巴,并且口承与嘴巴的距离还要适当。因此设计听筒手柄时,就要根据人的头型的有关尺寸和角度来考虑。人的头型骨骼,因民族的不同,有一定的差异,这就要靠统计学帮忙。只有在做了大量调查测量的基础上,才能计算出有代表性的数值来。国际上为了设计听筒手柄和制定电声测量标准,曾做过 Handset handle is used to make a phone call, the earpiece of the earpiece should be close to the ear, the mouthpiece should be right in front of the mouth, and the distance between mouthpiece and mouth should be appropriate. Therefore, the design of the handset handle, it is necessary according to the head size of the person to consider the size and angle. Human head-shaped skeleton, due to different nationalities, there are some differences, it depends on statistics to help. Only after doing a lot of survey and measurement can we calculate the representative values. Internationally in order to design handset handle and to develop electro-acoustic measurement standards, have done