Abstract: The acoustic performance of air conditioning insulation cotton has great significance to improve the sound quality of air conditioners. Its acoustic performance is mainly characterized by acoustic absorption coefficient and acoustic insulation quantity. Impedance tube based method is used to study the sound absorption and insulation performance of air conditioning sound insulation cotton material, to explore the relationship between its sound absorption and insulation performance and material configuration parameters, as a guide for the design of air conditioning equipment or selection of sound insulation cotton.

Key words: Sound absorption coefficient, Sound insulation, Impedance tube, Air conditioning