Cardioid Pattern Optimization for a Virtual Circular Microphone Array
نویسندگان
چکیده
A measurement system is presented that allows large aperture measurements with a high angular resolution and that is still compact and thus convenient for portable use. Theoretical considerations show that a cardioid microphone characteristic is desireable to achieve a low amplification of sensor noise throughout the audio frequency range. The directivity of real cardioid microphones, however, deviates from the ideal cardioid pattern. Here, it is demonstrated how the use of one omnidirectional and one figure-of-eight microphone offers the possibility to optimize the directivity pattern of a virtual cardioid microphone through suitably designed compensation filters.
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