MICROPHONES (AUDIO ENGINEERING)
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BTSOUND ENGINEERING + AUDIO ENGINEERING (ACOUSTICS)
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UDC621.395.61
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Descriptor GERMIKROFONE (TONTECHNIK)
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Descriptor ENGMICROPHONES (AUDIO ENGINEERING)
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Descriptor FREMICROPHONES (TECHNIQUE D'ACOUSTIQUE)
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NTWIRELESS MICROPHONES (AUDIO ENGINEERING)
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NTHYDROPHONES (AUDIO ENGINEERING)
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NTCAPACITOR MICROPHONES + ELECTROSTATIC MICROPHONES (AUDIO ENGINEERING)
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NTMINI SPIES + BUGS (MONITORING DEVICES, AUDIO ENGINEERING)
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NTOPTICAL MICROPHONES (AUDIO ENGINEERING)
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NTPIEZOELECTRIC MICROPHONES + CRYSTAL MICROPHONES (AUDIO ENGINEERING)
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NTDIRECTIONAL MICROPHONES (AUDIO ENGINEERING)
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RTTELEPHONE APPARATUS + TELEPHONE RECEIVERS + PHONES (TELEPHONY)