DIRECTIVITY PATTREN OF A CONDENSER MICROPHONE
By :
Nur Baehaqi
04306141014
ABSTRACT
This study aims to determine the pattern directivity of a condenser microphone at frequency of 500 Hz, 5000 Hz, 10000Hz and 20000 Hz. Frequency of each chosen to represent the low frequency, middle frequency and high frequency of a sound source is captured by a condenser microphone.
Data retrieval is done by using a loudspeaker which is used as a source of sound and microphone as a sensor that captures sound from the loudspeaker. Sound samples taken at a distance of 1 m from the center of the loudspeaker by rotating microphone in place, stative microphone has been equipped with a protractor. The distance between sample point is 10˚, so there are 36 sample points. This research was conducted in a room that was equipped with a silencer.
Polar pattern analysis using microsoft excel software shows a circular pattern at a frequency of 500 Hz and a more directive pattern (focused on several directions) along with the increasing frequency of the sound source. This means that at low frequencies, the microphone has a response similar reception in all directions and at high frequency microphone has a catchment response in a particular direction.
frequency, polar pattern and condenser microphone
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