Compensating for evanescent modes and estimating characteristic impedance in waveguide acoustic impedance measurements
نویسندگان
چکیده
منابع مشابه
Acoustic impedance measurements-correction for probe geometry mismatch.
The effect of evanescent mode generation, due to geometrical mismatch, in acoustic impedance measurements is investigated. The particular geometry considered is that of a impedance probe with an annular flow port and a central microphone, but the techniques are applicable to other geometries. It is found that the imaginary part of the measured impedance error is proportional to frequency, and t...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 2017
ISSN: 0001-4966
DOI: 10.1121/1.5016808