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Measurement ofvarious properties is the way to mechanical construction. In most cases, desired are determine, whether the measured device is useful for our omnidirectional and bi-directional characteristic. By their specific purposes, or it is not. This paper deals with the combination there may arise cardioid and hypercardioid measurement of microphone properties, concretely the characteristic, or narrow-directional, so called acoustic directional characteristic, which indicates how sensitive it shotguns [1] [3] (See Fig. 1). is to sounds arriving at diferent angles about its central a ['] axis. The goal was to design and realize a full automatic 33 303 30. measurement workplace, develop a method of controlling , the acoustic signal source, transfer the measured data to the personal computer for post-processing and set A[dB]A [dB]

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