Abstract
Acoustics can be a complex issue, but HVAC acoustics can be successfully evaluated for many typical applications. How sound behaves in different conditions and environment is to be studied. Also a study of different rating methods has been established, which can be used in many applications. For many complex applications, we can combine the different rating methods to get the proper acoustical environments. Different methods to improve acoustics in rooms of new buildings and also to improve the performance of existing buildings can be learned.
Keywords: Acoustics, sound, Noise, rating methods.