| 摘要 |
The probe containing two pressure exchangers, e.g. measuring microphones, is created so that in a sole body (2) of the probe or separately two waveguides (1A),(1B) of identical or variable lengths, identical or variable cross sections are situated. The entry openings (A), (B) of the waveguides (1A), (1B) are situated into an open space in a distance delta r and, by their other side, the waveguides are taken into separated chambers (3A), (3B) before sensitive elements (4A), (4B) of the pressure exchangers (5A), (5B) while δr = 3 to 60 mm.<IMAGE>
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