Masking sound generator

Details Masking sound generator Masking sound generator

H - Electricity

04

K

84/63

H04K 1/00 (2006.01) G10K 11/175 (2006.01)

Patent

CA 1047291

ABSTRACT OF THE DISCLOSURE Masking sound generating apparatus for use in a conventional room enclosure occupied by adult persons of average range of heights comprising a hollow enclosure having a top opening and a side opening, a speaker mounted inside the enclosure intermediate the top opening and the side opening and facing outwardly from the apparatus through the top opening, and a circuit in the enclosure operable to develop an electrical signal which is converted to an audible sound signal emitted by the speaker. Modulation means are incor- porated into the circuit to cyclically vary the amplitude of the sound signal which provides the masking sound signal with a pleasant, natural sound characteristic. The sound generating apparatus is located in the room at a height intermediate the head of a standing adult person and the ceiling, and is positioned so that the speaker faces in an upwardly direction to direct sound signals toward the ceiling. Other sound signals produced by the speaker eminate from the side opening to provide the masking sound with a slight undertone characteristic.

257911

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