UNIDIRECTIONAL SECOND ORDER GRADIENT MICROPHONE

UNIDIRECTIONAL SECOND ORDER GRADIENT MICROPHONE

A second order gradient microphone Fig. 1 with unidirectional sensitivity pattern is obtained by housing each of two commercially available first order gradient microphones 14, 24 centrally within a baffle 12, 22. The baffles have flat surfaces, are preferably square or circular and have parallel su...

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Bibliographische Detailangaben
Hauptverfasser: SESSLER, GERHARD MARTIN, WEST, JAMES EDWARD
Format: Patent
Sprache:eng
Schlagworte:
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:A second order gradient microphone Fig. 1 with unidirectional sensitivity pattern is obtained by housing each of two commercially available first order gradient microphones 14, 24 centrally within a baffle 12, 22. The baffles have flat surfaces, are preferably square or circular and have parallel surfaces the two baffles being parallel to each other. The rotational axes of the microphones are arranged to coincide. The output signal from one of the microphones is substracted from the delayed signal output of the other.