A planar element is provided for the active compensation of noise from different directions in an interior room. The planar element is equipped with anti-noise modules, each having a microphone and an electronic circuit having a combination of filters for adjusting phase and amplitude and an electronically controllable amplifier and a loudspeaker for active noise cancellation. The planar element is equipped over the width thereof with a plurality of anti-noise modules on each of a plurality of different longitudinally extending lines and is to be placed, for example, in front of a window having bounding walls. The anti-noise modules can be inconspicuously integrated into the planar element and jointly form longitudinally extending chains of anti-noise modules. The loudspeakers emit a canceling sound with respect to the noise, which canceling sound first passes through the planar element and subsequently largely cancels the noise.

A noise cancellation system for a vehicle includes an excitation device mountable to a vehicle body component. The excitation device is operable to produce a low frequency response of the vehicle body component.

A noise cancellation system for a vehicle includes an excitation device mountable to a vehicle body component. The excitation device is operable to produce a low frequency response of the vehicle body component.

A system for providing audio output. The system includes a device, e.g. a mobile phone connectable to one or more earphones. The device includes a computing platform having a processor; an audio unit configured to generate one or more output signals of arbitrary amplitude to the earphone(s); and at least one microphone configured to record the ambient power level during signal output. The user indicates his/her hearing of the output signals whereby a proportionality constant is recorded for each frequency of the output signals. The processor is configured to: analyze the proportionality constant for each frequency of one or more feedback signals from the earphone(s) to yield calibration data; adjust the amplitude or frequency based on the calibration data; generate one or more audiograms resulting from a hearing test; and adjust the device power level according to the received one or more audiograms.

Embodiments of systems and methods are described for reducing undesired leakage energy produced by a non-front-facing speaker in a multi-speaker system. For example, the multi-speaker system can include an array of forward-facing speakers, one or more upward-facing speakers, and/or one or more side-facing speakers. Filters coupled to any two of the speakers in the multi-speaker system can generate audio signals output by the coupled speakers to reduce, attenuate, or cancel a portion of an audio signal output by one or more non-front-facing speakers that acoustically propagates along a direct path from the respective non-front-facing speaker to a listening position in a listening area in front of the multi-speaker system.

The present disclosure provides systems and methods for generating and transmitting, or applying, a noise profile based on a determined environment a host device is operating in. The host device may receive data from one or more sensors, location information, and/or device information. The sensors may include a pressure, temperature, light, location, or humidity sensor. The location information may include data from a global positioning system and/or connectivity signals, such as multicast DNS and/or Bluetooth broadcast. Device information may include schedule data and/or device state information. The data from one or more sensors, the location information, and/or the device information may be aggregated to determine the environment in which the host device is operating in. Based on the determined environment, a noise profile generator may generate a noise profile. The noise profile may define gains to be applied to audio signals being output to the user.

An always-listening-capable decoupled cap for a computing device having a communication module, comprising an electronic sensor and a gatekeeping module. All data received by the communications module based on data from the electronic sensor passes through the gatekeeping module while a gatekeeping function is disabled, no data based on data from the electronic sensor passes through the communications module while the gatekeeping function is enabled, all data input to the gatekeeping module is received via an exclusive input lead from the electronic sensor, and all data output from the gatekeeping module is transmitted via an exclusive output lead to a component other than the electronic sensor. The cap interferes with a function of the computing device and retrieves a response to the user input from a server different from a server that the computing device would have retrieved data from but for the interference.

A planar element is provided for the active compensation of noise from different directions in an interior room. The planar element is equipped with anti-noise modules, each having a microphone and an electronic circuit having a combination of filters for adjusting phase and amplitude and an electronically controllable amplifier and a loudspeaker for active noise cancellation. The planar element is equipped over the width thereof with a plurality of anti-noise modules on each of a plurality of different longitudinally extending lines and is to be placed, for example, in front of a window having bounding walls. The anti-noise modules can be inconspicuously integrated into the planar element and jointly form longitudinally extending chains of anti-noise modules. The loudspeakers emit a canceling sound with respect to the noise, which canceling sound first passes through the planar element and subsequently largely cancels the noise.

Noise and vibration sensing includes generating with an acceleration sensor a sense signal representative of the acceleration that acts on the acceleration sensor, and processing the sense signal to provide a processed sense signal having an adjustable signal bandwidth and an adjustable signal dynamic. The signal bandwidth extends between a lowest frequency and a highest frequency of the sense signal, and the signal dynamic is the ratio between a maximum amplitude of the sense signal and an output noise floor generated by the acceleration sensor. Noise and vibration sensing further includes adjusting the signal bandwidth and the signal dynamic in accordance with a control signal so that the signal bandwidth increases when the signal dynamic decreases and vice versa.

A microphone system may include a measuring device that includes a plurality of sound elements and a semiconductor chip connected to the sound elements and receives a vibration signal and a noise signal from the outside to cancel the vibration signal and changes a phase of the noise signal to output a reverse phase noise signal; and a driver that is connected to the semiconductor chip and is included in a front glass of a vehicle and vibrates in response to the reverse phase noise signal to cancel a noise signal inputted from the outside.