96 results about "Sound masking" patented technology

A sound masking system according to the invention is disclosed in which one or more sound masking loudspeaker assemblies are coupled to one or more electronic sound masking signal generators. The loudspeaker assemblies in the system of the invention have a low directivity index and preferably emit an acoustic sound masking signal that has a sound masking spectrum specifically designed to provide superior sound masking in an open plan office. Each of the plurality of loudspeaker assemblies is oriented to provide the acoustic sound masking signal in a direct path into the predetermined area in which masking sound is needed. In addition, the sound masking system of the invention can include a remote control function by which a user can select from a plurality of stored sets of information for providing from a recipient loudspeaker assembly an acoustic sound masking signal having a selected sound masking spectrum.

A sound masking system and method for providing sound masking in networked workstations or offices. The sound masking system comprises a communication network, a plurality of sound masking devices adapted to emit a sound masking signal, and a remote controller. One or more of the sound masking devices includes a controller, and the controller includes an interface for receiving information from the communication network and a component for controlling or adjusting output characteristics associated with the sound masking signal, such as volume. The controller includes a component responsive to a user input for setting or varying output characteristics associated with the sound masking signal.

This invention relates to an audio test system and a method of mobile communication terminals, in which, the sytem includes: a radio communication base station simulator, an audio test analyzer, a system control platform, a noise eliminating chamber, a preamplifier and an acoustic simulation device, said method includes test to the evaluation values of transmission loudness and receiving loudness, noise of idle channels, transmission flexibility / frequency character, receiving flexibility / frequency character, evaluation value of side sound mask, loss of stability, echo control of acoustics and T-R distortion, and also includes evaluation value of side sound mask, out-of-band signals and suppression to environmental noise of listeners.

A unique, fully integrated, fully programmable, and highly flexible sound distribution system and methodology for providing masking sound, background music, and paging capabilities in up to eight zones of a building or space is provided. The methodology embodied in the system includes internal masking sounds that are uniquely pre-filtered to provide efficient and effective masking of distracting sounds within selectable zones of the space with a minimum masking sound dB sound level and with a pleasant sounding and non-annoying masking sound. The system also incorporates the capacity to be controlled from a remote or local telephone to adjust the volume level in any zone serviced by the system by issuing appropriate DTMF codes from the telephone's keypad. Unique bi-tone diagnostic functions are provided for assuring that the entire system is correctly wired and installed and for troubleshooting operational anomalies. ⅓ octave equalization is provided to compensate for known frequency response characteristics of the flat panel radiators of the system and to compensate for varying room acoustics to provide a low special variation of sound among the various zones of the space. The result is a high quality high fidelity sound that is consistent from zone to zone.

A system and method for generating a masking noise level and spectrum automatically adjusted to obtain a target masking noise spectrum in a room. The system comprises a white noise generator and a mask filter automatically determined according to a correction of an acoustical response of the room and to the target masking noise corrected by an ambient noise.

A sound masking system for shaping the ambient noise level in a physical environment. The sound masking system comprises a networked and distributed system having a number of master units coupled together and to a control unit. One or more of the master units may include satellite sound masking units which function to reproduce an audio signal generated by a central sound masking module. The audio signal comprises a sound masking signal, a paging signal or a sound masking signal mixed with a paging signal. The sound masking signal is generated by the central sound masking module or a selected from a number of sound masking signal inputs at the control unit. Each of the master units is addressable over the network by the control unit enabling the control unit to control the contour, spectral band, and gain characteristics of the audio output signal. The system may also include a remote control unit which provides the capability to tune and adjust each master sound masking unit in situ without requiring physical access through the ceiling installation.

The invention provides a sound masking signal generating method and system. The method includes the steps that one or more sample sound signals are extracted, and a sound sample characteristic model base is built; a target sound source signal is obtained; sound recognition is conducted on the target sound source signal, and one or more sample sound signals with recognition similarity reaching a preset threshold value are selected from the sound sample characteristic model base; scrambling combination is conducted on the selected sample sound signals, and sound masking signals are obtained. The sound masking signals generated by the method have similar sound characteristics with the target sound source signal, are low in speech intelligibility, do not contain any information of the target sound source signal, and have larger advantages in masking efficiency and security.

A sound masking system according to the invention is disclosed in which one or more sound masking loudspeaker assemblies are coupled to one or more electronic sound masking signal generators. The loudspeaker assemblies in the system of the invention have a low directivity index and preferably emit an acoustic sound masking signal that has a sound masking spectrum specifically designed to provide superior sound masking in an open plan office. Each of the plurality of loudspeaker assemblies is oriented to provide the acoustic sound masking signal in a direct path into the predetermined area in which masking sound is needed. In addition, the sound masking system of the invention can include a remote control function by which a user can select from a plurality of stored sets of information for providing from a recipient loudspeaker assembly an acoustic sound masking signal having a selected sound masking spectrum.

A system and mechanism for monitoring and / or controlling a sound masking system from a computer aided design drawing. According to an embodiment, the system is configured to allow an operator to “click” sound masking components on the design drawing and view operating / configuration settings, and / or edit, change or modify the operating / configuration settings, which are then applied via an interface to the associated physical sound masking component in the sound masking system. According to another embodiment, the system is configured to allow an operator to design or configure sound masking components on a design drawing. The sound masking components correspond to physical sound masking components in a sound masking system and comprise one or more active sound masking elements, which are configured to be responsive to an input and allow an operator to monitor, change and / or modify operating / configuration settings for physical sound masking component via the sound masking element in the design drawing.