Sound masking package

Claim 1

A self-contained sound masking package comprising, in combination, a closed housing having an acoustically permeable top wall, a side wall, and a bottom wall, defining an interior, circuit means formed as a printed circuit board with an electric circuit arranged on said printed circuit board disposed within said housing interior including means for supporting said circuit means adjacent said bottom wall in parallel relationship therewith for producing a plurality of signal voltages having frequencies at predetermined relative decibel levels, said levels thereby forming at least two selectable spectrums having respective frequencies at different decibel levels, switch means connected to said electric circuit for selecting one of said spectrums, a loudspeaker having a speaker cone and a coil and wherein said signal voltages are applied to said loudspeaker coil by said connecting means disposed within said housing including means for supporting said loudspeaker adjacent said acoustically permeable top wall and being directed outwardly for introducing an audio output signal into the area surrounding said housing, sound damping material affixed to the inner surface of said side wall, means for connecting said circuit means to an associated source of electric power, means for connecting the output of said circuit means to said loudspeaker for applying the plurality of signal voltages from said circuit means to said loudspeaker to produce said audio output signal within said audible frequency range and with the frequencies in said audible frequency range at said predetermined relative decibel levels, level control means for adjusting the level of said audio output signal, and means for connecting an associated remote signal source to said circuit means for applying said remote signal to said loudspeaker to provide an audio output signal corresponding to said remote signal in addition to the audio signal produced by said circuit means into the area surrounding the housing.