| As a country that has the potential natural resources in the supply of raw materials are sourced from nature, namely natural fibers. Where the usefulness of natural fibers is as sound absorbent material. Natural fibers used are coconut fibers for absorbing sound. Research carried out by performing the testing and also press the sound absorption testing on coconut fiber. Testing tap coconut fiber was conditioned by following the parameters given in order to produce a compressed voltage. As for sound absorption testing done to determine how much sound absorption coefficient of each specimen of coconut fiber. The results of sound absorption testing program processed the data in the graph Mathlab to get the sound absorption. The test results of specimens to determine the sound absorption of coconut fiber is best at absorbing sound. Voltage value is taken in each specimen is different fibers to produce a different sound absorption coefficient as well. |