Method for suppressing acoustic interfering signals, introduced into a passenger compartment of the motor vehicle, including: detecting a physical size in the passenger compartment of the motor vehicle, generating a detection information describing the detected physical size in the passenger compartment of the motor vehicle, selection of a counter-signal parameter influencing the acoustic counter-signal, depending upon the physical size described through the detection information, and/or adaptation of a counter-signal parameter influencing the acoustic counter-signal, depending upon the physical size described through the detection information, generating an acoustic counter-signal on the basis of the selected counter-signal parameter and/or on the basis of the adapted counter-signal parameter, and outputting the generated acoustic counter-signal into the passenger compartment of the motor vehicle to suppress acoustic interfering signals, introduced into the passenger compartment of the motor vehicle, resulting from the operation of the on-board drive unit.

An active vibration and noise control device robust against outside disturbances, and an active vibration and noise control circuit are provided. An adaptive control circuit of this active vibration and noise control device has a cross-correlation value calculation unit which calculates the cross-correlation value of error signals, and a canceling output limiting unit which determines whether or not the cross-correlation value is less than a cross-correlation threshold value, and limits increases in the cancelling output if it is determined that the cross-correlation value is less than the cross-correlation threshold value.

A hearing protection device includes: a sub-band splitting module configured to divide a first microphone input signal into sub-band signals having a first sub-band signal and a second sub-band signal; an estimator module configured to estimate signal strength parameters of respective sub-band signals, the signal strength parameters having a first signal strength parameter of the first sub-band signal, and a second signal strength parameter of the second sub-band signal; a multiband limiter; and a limiter controller; wherein the limiter controller is configured to determine gain reductions for the sub-band signals of the first microphone input signal, the gain reductions having a first gain reduction and a second gain reduction, and wherein the limiter controller is configured to control the multiband limiter to apply the second gain reduction to the second sub-band signal, wherein the second gain reduction for the second sub-band signal is based on the first signal strength parameter.

Disclosed is an acoustic drainage structure and an electronic device. The acoustic drainage structure includes a housing and an acoustic assembly. The housing is provided with an accommodating cavity and a first sound-pickup hole communicated with the accommodating cavity. The acoustic assembly includes a sound-pickup module provided in the accommodating cavity and a sound-generating unit provided in the accommodating cavity. The sound-pickup module includes a sound-pickup unit, a connector and a breathable waterproof membrane, the breathable waterproof membrane is provided at a cavity wall of the accommodating cavity, the connector is connected to the breathable waterproof membrane and the sound-pickup unit, and the connector is provided with a second sound-pickup hole. The breathable waterproof membrane covers the first sound-pickup hole and the second sound-pickup hole, and the breathable waterproof membrane, and a hole wall of the second sound-pickup hole and the sound-pickup unit are enclosed to form a sound-pickup cavity.

Systems and methods are disclosed for modelling of individual acoustic transfer functions relative to the audition of an individual in three-dimensional space. A method is provided for modelling sets of acoustic transfer functions specific to an individual according to a multiplicity of directions in space, where a set of acoustic transfer functions specific to the individual in a given direction is determined depending on the result of a statistical analysis of a plurality of distinct stimuli emitted in the direction of the individual. A stimulus can be dependent on at least one set of predetermined acoustic transfer functions that are associated with the given direction, and on responses received from the individual to each emitted stimulus.

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 noise dampening arrangement for a motor vehicle includes a mass coupled to a structural component of the motor vehicle. A sensor detects vibration of the structural component of the motor vehicle, and transmits a vibration signal indicative of the detected vibration. An electronic processor is communicatively coupled to the sensor, receives the vibration signal, and emits a vibration compensation signal dependent upon the vibration signal. An actuator is communicatively coupled to the electronic processor, receives the vibration compensation signal, and exerts a force on the mass dependent upon the vibration compensation signal such that the vibration of the structural component of the motor vehicle is reduced.

A wearable audio device includes a microphone, a speaker, and a hardware processor. The microphone is configured to receive external audio. The speaker configured to produce internal audio. The hardware processor is operably connected to the microphone and speaker. A comparison of the external audio to the internal audio is performed, and a notification is generated based upon the comparison determining that the external audio matches the internal audio.

Systems and methods for ambient noise mitigation as a network service are provided. In some embodiments, an ambient noise mitigation server establishes at least one low latency network slice for at least one UE coupled to a radio access network. The ambient noise mitigation server generates a cancelation signal based on ambient sound mitigation data received by the radio access network, the ambient sound mitigation data including acoustic sensor data representing an ambient sound signal. The cancelation signal is generated to comprise a phase shift with respect to the ambient sound signal computed at least in part as a function of a location of the at least one UE, and causes at least one acoustic emitter to emit an acoustic cancelation signal based on the cancelation signal. In some embodiments, the phase shift may be adjusted by controlling a latency characteristic of the low latency network slice.

Provided is a sound direction detection sensor capable of detecting a direction from which sound is coming by using a multi-resonator array. The disclosed sound direction detection sensor includes two resonator arrays, each including a plurality of resonators having different resonance frequencies. The two resonator arrays have different directivities. Each resonator array serves as an audio sensor, and the sound direction detection sensor detects a direction from which sound is incident, regardless of a distance between audio sensors.