Abstract: Technical solutions are described for acoustic echo cancellation. An example method includes computing, by a beamformer, a plurality of updated beamformer filter coefficients, the beamformer filter coefficients computed adaptively to determine a speech signal from a plurality of input audio signals. Further, the method includes computing, by a transfer function estimator, a relative transfer function based on the updated beamformer filter coefficients and a plurality of present acoustic echo canceller coefficients. Further, the method includes adjusting a plurality of acoustic echo canceller coefficients using the relative transfer function, and generating an output speech signal, by the acoustic echo canceller, by cancelling echo components from the speech signal using the adjusted filter coefficients. Further, the method includes sending, by the acoustic echo canceller, the output speech signal to a far end speech device.

Abstract: A virtual sound source position determination unit (122) determines a position of the virtual sound source from which a sound represented by a sound signal is output based on a detected motion of a user (31). A sound signal processing unit (123) performs stereophonic sound processing on the sound signal based on the determined position of the virtual sound source. The sound signal processing unit (123) reproduces the sound signal subjected to the stereophonic sound processing. Thus, the sound signal is reproduced such that the sound suitable for the motion of the user is output.

Abstract: A solid state disk, including a main body, a processing unit, a display screen and a transmit port. The main body has a substrate and a shell portion covering on two opposite side faces of the substrate, the substrate is provided with a memory module; the processing unit is disposed in the main body; the display screen is attached to the main body and viewable from outside of the solid state disk, the display screen is electrically connected with the processing unit, the processing unit can control a display state of the display screen; and the transmit port is disposed on the substrate, and the transmit port is electrically connected with the memory module.

Abstract: An audio surveillance system includes a plurality of nodes and each node includes a microphone, a speaker, and a control unit. The microphone is configured to detect sound and the speaker is configured to provide sound. The control unit is configured to receive a plurality of inputs from the plurality of nodes and the plurality of inputs are based on a detected sound; determine a location of the source of the detected sound based on the plurality of inputs; classify the detected sound according to predefined alert conditions and based on the location of the source of the detected sound; provide an alert to a monitoring device regarding the detected sound based on the classification of the detected sound; and control at least one node from the plurality of nodes to provide an audio response to the detected sound.

Abstract: Systems, methods, and computer-readable medium are provided for managing connections of user devices. For example, two source devices may be configured to maintain a data stream with one another. The data stream may enable the two source devices to identify one or more connections between each other and at least a third device. In response to receiving an event that indicates content to be provided to the third device, the data stream may be used by the source devices to configure their network connections with the third device.

Abstract: A vehicle includes at least one sensor and a body having an exterior portion and an interior portion. The sensor is configured to detect noise existing in the exterior portion and the interior portion, and to output at least one noise signal indicative of the detected noise. The vehicle further includes at least one noise cancellation and enhancement (NCE) controller and an automotive audio bus (A2B) interface. One or more of the NCE controllers are configured to perform at least one noise management signal processing operation based on the at least one noise signal. The automotive audio bus (A2B) interface receives the at least one noise signal and delivers the at least one noise signal to the at least one NCE controller.

Abstract: An audio system for use in an automotive vehicle is provided. The audio system is configured to detect the removal of the removable speaker and adjust the audio signal to the fixed speakers so as to maintain the quality of sound within the vehicle. The audio system includes a signal processor configured to detect the presence of the removable speaker. The audio system distributes the frequency transmitted to the removable speaker to the speakers within the automotive vehicle so as to maintain the same sound quality when the removable speaker is removed.

Abstract: A radio frequency (RF) identification (RFID) reader is mounted in a venue in proximity to a portal that is openable and closable by a door. The portal reader reads RFID object tags associated with objects that approach the portal. An electrical conductor is associated, and jointly movable, with the door. A portal RFID tag is mounted at the portal. The portal tag is overlain by the electrical conductor in a closed door position and is remote from the electrical conductor in an open door position. The portal tag is readable by the portal reader in either the open or the closed door position. A controller identifies any objects that have passed through the portal based on whether the object tags have been read, as well as whether the portal tag has been read in either the open or the closed door position.

Abstract: Aspects of the present invention relate to an active noise system, a controller for an active noise system, a method and a hybrid electric vehicle. The invention relates to use of an active noise system for providing noise when an ICE is not active.

Abstract: Methods and apparatus to detect spillover in an audience monitoring system are disclosed. An example apparatus includes means for sampling first and second audio signals. The first audio signal is received from a source by a first microphone. The second audio signal is associated with the source and received by a second microphone. The second microphone is separated from the first microphone by a first distance. The example apparatus includes means for calculating a time delay between receipt of the first and second audio signals. The example apparatus includes means for determining whether the time delay is within a threshold time difference. The example apparatus includes means for retaining media associated with the source when the time delay is within the threshold time difference. The means for retaining is to ignore the media associated with the source when the time delay exceeds the threshold time difference.

Abstract: A loudspeaker diaphragm state estimation method includes: adjusting a weight value of a diaphragm displacement model by adaptive filtering until an error between an estimated value of a driving voltage of a loudspeaker and a measured value of the driving voltage is less than a predetermined threshold; estimating a diaphragm relative displacement of the loudspeaker according to the diaphragm displacement model corresponding to a final determined weight value; determining a diaphragm relative speed at a next moment based on an input current, a product value of a vector determined by an estimated value of a diaphragm relative speed and an estimated value of a diaphragm relative displacement, and a weight value vector obtained at a present moment; and determining an estimated value of the driving voltage using the estimated value of the diaphragm relative speed, the input current, and a DC impedance of the loudspeaker at the present moment.

Abstract: A circuit can be used in a speaker system. The circuit includes an amplifier with an output configured to be coupled to a speaker. An offset comparator has an input coupled the output of the amplifier and is configured to provide an offset control signal. A digital circuit has a first input coupled to an output of the offset comparator, a second input configured to receive an amplifier control signal, a third input configured to receive a play control signal, and an output configured to provide a forced mute signal that can be used to control the amplifier.

Abstract: An apparatus for an embedded sensor cable assembly, where a first cable assembly includes a cable portion and a connector portion. The cable portion includes a first embedded sensor and a second embedded sensor, where the first embedded sensor is electrically coupled to the second embedded sensor and where the first embedded sensor and the second embedded sensor is capable of registering orientation measurements. A microcontroller is electrically coupled to the connector portion, first embedded sensor and the second embedded sensor, where the microcontroller is capable of receiving the orientation measurements from the first embedded sensor and the second embedded sensor.

Abstract: An example implementation may involve a network device detecting within a playback environment, via a microphone, an audio signal over a duration of time. After the duration of time, the implementation further involves the network device determining a frequency response of the playback environment based on the detected audio signal and a test tone. The test tone includes (i) a first component that includes noise at frequencies between a minimum of a calibration frequency range and a first threshold frequency, and (ii) a second component that sweeps through frequencies between a second threshold frequency and a maximum of the calibration frequency range.

Abstract: An active noise reduction system and method to cancel fan or blower noise. The system utilizes 2 microphones: one to pick up the subject noise and the noisy signal at far field. The proposed system utilizes a portable loudspeaker that is placed near the subject. The loudspeaker broadcasts omni-directional or directional anti-phase signals to reduce the noise at far field. The system includes a real-time processor (DSP or FPGA) with fast adaptive filter to process the 2 microphone signals and generate the anti-phase signal. The adaptive filter uses the second microphone as a reference to generate an out-of-phase signal, which can then suppress the far field noise. The system is simple to set up and portable. The system utilizes frequency-domain adaptive filter and proven algorithms to quickly compute the anti-phase signals for cancelling detected noise.

Abstract: An electronic device includes a housing and an internal pressure regulator valve. The internal pressure regulator valve includes a valve body of flexible material. The valve body has a valve hole and a hollow. The hollow is continuous with the valve hole and opens into the housing. Through the valve hole, gas is released to outside.

Abstract: An electronic device having a composite acoustic membrane to inhibit water ingress and to allow sound transmission, is disclosed. Embodiments include an electroacoustic transducer within an encased space of a casing, and a composite acoustic membrane between the electroacoustic transducer and an acoustic port in the casing. The acoustic membrane may include a nonporous region at least partly covering the acoustic port, and a porous region to vent the electroacoustic transducer volume to the encased space and/or to an environment surrounding the casing. Other embodiments are also described and claimed.

Abstract: Example techniques for acoustic position measurement in an example listening environment are disclosed. An example implementation involves a control device including a first transducer, a playback device including a second transducer, and a network microphone device (NMD) including a microphone array. The NMD determines a first direction of the control device with respect to the NMD based at least in part on a first test sound received at the microphone array from the first transducer and determines a second direction of the playback device with respect to the NMD based at least in part on a second test sound received at the microphone array from the second transducer. The NMD adjusts one or more beamforming parameters of the microphone array thereby causing amplifying sound received at the microphone array from the first direction and attenuating sound received at the microphone array from the second direction.

Abstract: Headphones include removable audio drivers electrically coupled with electrical conductors using solderless and detachable interconnections. Driver assemblies for headphones include an audio driver and a driver unit housing. An acoustical cavity is defined between the driver unit housing and the audio driver, and a port extends through the driver unit housing between the acoustical cavity and the exterior of the driver assembly. The driver unit housing is configured to be secured within an outer ear-cup housing of a headphone such that the port is open to the exterior of the headphone without communicating acoustically with a volume outside the driver unit housing and within the outer ear-cup housing. Headphones include such driver assemblies. Methods are used to form such headphones and driver assemblies.

Abstract: According to an embodiment, a transducer package includes a circuit board including a port, a lid disposed over the port, an acoustic transducer disposed over the port and including a membrane, and an environmental transducer disposed at the circuit board in the port. The lid encloses a first region, and the membrane separates the port from the first region. Other embodiments include corresponding systems, apparatus, and structures, each configured to perform the actions or steps of corresponding embodiment methods.