Title: Analysis of acoustic characteristics of apertures using the acoustic intensity measuring method.
Abstract:Apertures and holes are set up on all apparatus for the purposes of ventilation, heat radiation, etc. However, they are disadvantageous for the purpose of noise reduction. If their acoustic characteri...Apertures and holes are set up on all apparatus for the purposes of ventilation, heat radiation, etc. However, they are disadvantageous for the purpose of noise reduction. If their acoustic characteristics are well known, it is possible to carry out an optimum design of the apertures under the consideration of both purposes. Thus it is necessary to obtain their acoustic characteristics. This paper describes the experimental investigation on the acoustic characteristics of the apertures between the plates and of the vane grill. Also, the mechanism of acoustic phenomena is analyzed.Read More