In order to construct an optimum multichannel sound reproduction system, it is important to measure and evaluate correctly the sound field reproduced by each loudspeaker. The developed sound field measurement system performs highly precise sound analysis with an easy setup. It comprises seven microphones installed in the vertex of tetrad structure, a microphone amplifier, and a PCMCIA card that collects and feeds data into a compact PC. The measurement is carried out by reproducing a DVD or CD containing the test signal. The authors believe that this system will play an important role in the development of audio systems incorporating DVD-Audio players.:
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