随着工业化水平的提高,产品噪声已成为影响提高产品质量的一个重要环节,也成为危害工人健康和污染环境的重要因素。怎样才能准确地测量出机器的噪声,这是大家所关心的问题。一个人听到的声音可以分为两部分。一部分是从声源直按传到耳朵的声音,叫直达声;另一部分是声源发出的声波,经过物体一次或多次反射后,而到达耳朵的声音,叫反射声。测量机器的噪声,不希望有反射声,因为它提高了噪声的声级,影响测量的精确性。消声室就是把反射声全消除掉,使消声室内测点接收到的都是声源的直达声。把各种机器、设备和部件放在这 With the improvement of industrialization, product noise has become an important link that affects the quality of products. It also becomes an important factor that endangers the health of workers and pollutes the environment. How to accurately measure the machine’s noise, which is everyone’s concern. A person can hear the sound can be divided into two parts. Part of the direct transmission from the sound source to the ears of the sound, called direct sound; the other part is the sound waves emitted by the source, after one or more times the object reflection, and the sound reaches the ear, called the reflected sound. Measuring machine noise, do not want to have reflected sound, because it increases the level of noise, affecting the accuracy of measurement. Anechoic chamber is completely eliminate the reflected sound, so that the anechoic chamber measuring point are received sound source is the direct sound. Put a variety of machines, equipment and components here