Patents Assigned to Acoustical Design Incorporated
  • Sound masking package
    Patent number: 4185167
    Abstract: A self-contained sound masking package including a housing having an interior forming a loudspeaker enclosure in the bottom of which is disposed an electric circuit arranged to be connected to an associated source of electrical power for producing a voltage having a predetermined frequency range within the audible spectrum and with the frequencies at predetermined relative decibel levels, the voltage being applied to a transducer such as a loudspeaker having a coil supported in the housing interior adjacent the top of the housing for introducing an audible sound of the predetermined frequency range and decibel levels into the area surrounding the housing, together with means for connecting a remote signal source to the circuit to provide a supplementary audible output from the loudspeaker into the area and the electric circuit being preferably in the form of a printed circuit board and having filter means which may be selectively activated to provide an audible output from the loudspeaker throughout at least
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: January 22, 1980
    Assignee: Acoustical Design Incorporated
    Inventors: Donald R. Cunningham, James E. Sulewsky
  • Sound generating system for a sound masking package
    Patent number: 4024535
    Abstract: A self-contained sound masking package including a housing having an interior forming a loudspeaker enclosure in the bottom of which is disposed an electric circuit arranged to be connected to an associated source of electrical power for producing a voltage having a predetermined frequency range within the audible spectrum and with the frequencies at predetermined relative decibel levels, the voltage being applied to a transducer such as a loudspeaker having a coil supported in the housing interior adjacent the top of the housing for introducing an audible sound of the predetermined frequency range and decibel levels into the area surrounding the housing, together with means for connecting a remote signal source to the circuit to provide a supplementary audible output from the loudspeaker into the area and the electric circuit being preferably in the form of a printed circuit board and having filter means which may be selectively activated to provide an audible output from the loudspeaker throughout at least
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: May 17, 1977
    Assignee: Acoustical Design Incorporated
    Inventor: Harold Goldstein
  • Acoustical enclosure for teleprinters or the like
    Patent number: D263956
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: April 20, 1982
    Assignee: Acoustical Design Incorporated
    Inventors: Donald R. Cunningham, James E. Sulewsky