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101 0 $aeng
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181   $ctxt$2rdacontent
182   $cc$2rdamedia
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200 10$aIEEE No 258-1965 $eIEEE Test Procedure for Close-Talking Pressure-Type Microphones /$fIEEE
210  1$aPiscataway, NJ :$cIEEE,$d1965.
215   $a1 online resource (12 pages)
225 1 $aIEEE Std ;$v258-1965
330   $aA close-talking pressure-type microphone is anacoustic transducer which is intended for use in closeproximity to the lips of the talker and is eitherhand-held or boom-mounted. Various types of microphonesare currently used for close-talking applications.These include carbon, dynamic, magnetic,piezoelectric, electrostrictive and condenser types.Each of these microphones has only one side of itsdiaphragm exposed to sound waves, and its electricoutput substantially corresponds to the instantaneoussound pressure of the impressed sound wave.Since a close-talking microphone is used in thenear sound field produced by a person's mouth, it isnecessary when measuring the performance of suchmicrophones to utilize a sound source which approximatesthe characteristics of the human sound generator.
410  0$aIEEE Std ;$v258-1965.
517   $aIEEE No 258-1965
606   $aMicrophone
606   $aSound$xRecording and reproducing
606   $aPressure$xMeasurement
615  0$aMicrophone.
615  0$aSound$xRecording and reproducing.
615  0$aPressure$xMeasurement.
676   $a621.38284
801  0$bNjHacI
801  1$bNjHacl
906   $aDOCUMENT
912   $a996280658703316
996   $aIEEE No 258-1965$93646974
997   $aUNISA