Teaching Principle of Sound Intensity using Closed-Pipe Organs that Contain Various Levels of Water for Students with Deaf and Hard Hearing

Abstract

This research was conducted to demonstrate the use of water levels in closed-pipe organ for Deaf and Hard Hearing (DHH) student in an effort to increase understanding of sound intensity. The application of this method is to combine the experiments using water levels in closed pipe organs and conventional methods. The subjects were DHH students because they are hard to find in Indonesia (the condition of DHH children who were hidden by their parents). The application of conventional methods is giving lectures in class. While the experimental method was carried out by demonstration by striking a wooden stick into a pipe organ filled with water (with various levels) to produce sounds. To further explain the sound intensity, the experiment was equipped with a sound intensity meter. Interviews, pretests and posttests were conducted to evaluate the success of the study. From the research conducted it can be seen that DHH students are able to understand and distinguish fundamental aspects of sound from various levels of intensity. A combination of speaking, lip reading, repetition, listening and effective experiments can be done to provide difficult subject matter for DHH students. Other information obtained is that the method used can also be used as an alternative to evaluating hearing levels (such as the use of sophisticated and expensive equipment) because this method uses equipment that is cheaper in terms of price and is simpler.