抄録
This paper deals with the characteristic of noise reduction of perforated-plug muffler. The perforated-plug muffler is a kind of reactive silencer. Attenuating noise by a pipe with a closed end and a perforated surface inserted into an expansion chamber. This research investigated about the influence the various sizes of thin perforated-plug muffler affect a sound-damping characteristic. And tried to establish the design technique of a thin perforated-plug muffler.
