portable voice transmitting and receiving equipment for exclusion of ambient noise and voice silencing to prevent disturbance of others; and ambient sound excluding and voice silencing unit equipped with microphone for use with recording machines and transmitting equipment

'ambient':10,21 'disturb':17 'equip':6,28,38 'exclud':23 'exclus':8 'machin':35 'microphon':30 'nois':11 'other':19 'portabl':1 'prevent':16 'receiv':5 'record':34 'silenc':14,26 'sound':22 'transmit':3,37 'unit':27 'use':32 'voic':2,13,25

CYLENT

Owner

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