Pressure-gradient microphones are not very sensitive to low-frequency sound waves. The Microflown, however, has a high signal-to-noise ratio at these lower frequencies. A combination of a Microflown and a pressure-gradient microphone has been realized to create a high-end wide-band velocity microphone pair with a figure-eight polar pattern. The electronics, realization, and test results of this add-on microphone are presented. With the use of the wide-band microphone pair, the Blumlein recording technique was tested.:
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