Как выбрать гостиницу для кошек
14 декабря, 2021
Jute-based composites can be used in the noise control of several home appliances like window air-conditioner, refrigerator, clothes washer and dryer, vacuum cleaner, dishwasher, etc. In many instances noise reduction of around 10 dB has been obtained by using the jute derivatives. In few other instances the noise reduction in terms of SPL has been hardly achieved, however there has been a significant improvement in the sound quality of the sound after the noise treatment. For instance a metallic tonal noise has been suppressed to a pleasant broadband noise. In fact currently noise control engineers are designing products with superior sound quality58. Case studies of noise control from few of them are given in the following sections.