초록 ▼

A method and apparatus for masking sound is disclosed. A master sound masking unit (14) having a sound masking generator (20), an amplifier (22), a ten-octave equalizer (24) and a dual voice coil speaker (26) therewithin. Slave sound masking units (16) are connected to master unit (14) by detachable

A method and apparatus for masking sound is disclosed. A master sound masking unit (14) having a sound masking generator (20), an amplifier (22), a ten-octave equalizer (24) and a dual voice coil speaker (26) therewithin. Slave sound masking units (16) are connected to master unit (14) by detachable cables (18). Master unit (14) may also be used alone without slave units (16). If used with slave unit (16), master and slave units are arranged into zones and connected and adjusted in accordance with the method for producing optimum sound masking results described herewithin.

대표청구항 ▼

A method for masking sound in particular zones of an interior space comprising the steps of: (a) monitoring the ambient noise of said space; (b) measuring the characteristic frequencies and amplitudes of said noise; (c) establishing zones defined by areas contiguous of similar ambient noise characte

A method for masking sound in particular zones of an interior space comprising the steps of: (a) monitoring the ambient noise of said space; (b) measuring the characteristic frequencies and amplitudes of said noise; (c) establishing zones defined by areas contiguous of similar ambient noise characteristics; (d) mounting a first device for producing a sound masking output centrally within each of said zones; (e) mounting second devices for producing a sound masking output which is driven by the first device adjacent each of said first devices; and (f) adjusting the output frequency and amplitude characteristics of each of said first and second devices to produce a composite masking signal which results in a voice frequency shaped masking spectrum at a fixed height from the ground throughout the zone.