Abstract: A piezoelectric MEMS microphone includes a substrate and a piezoelectric sensor movably coupled to the substrate. The piezoelectric sensor includes a multilayer cantilever beam with multiple piezoelectric layers and multiple metal electrode layers. The beam is attached to the substrate and extends to a distal tip at a free unsupported end. A feedback control circuit is electrically connected to one or more of the metal electrode layers and applies a direct current bias voltage between at least two of the metal electrode layers to actively control an acoustic resistance of the piezoelectric sensor.

Abstract: A Micro-Electro-Mechanical System (MEMS) device comprises a piezoelectric transducer having a first frequency behavior, wherein the piezoelectric transducer comprises a piezoelectric trimming region, and control circuitry to provide a bias signal to the piezoelectric trimming region of the piezoelectric transducer for adjusting a second frequency behavior of the piezoelectric transducer.

Abstract: A modular vehicle sound system that can be upgraded or reconfigured by changing a plug-in module. In the advanced-capability embodiments the invention combines the functions of a vehicle data bus interface, a digital signal processor, and an amplifier. In the advanced-capability embodiments the invention provides a wireless interface with a separate digital device that can be used to control the inventive amplifier.

Abstract: An audio rendering device includes: at least one wireless communications interface configured to receive a first plurality of audio packets from a wireless communication device, the first plurality of audio packets including frames of audio data for a first audio channel from a set of one or more audio channels; and a processing unit; wherein the audio rendering device is configured to release, at respective first buffer release times, the frames of the audio data for the first audio channel from a first buffer for rendering by the processing unit; wherein the audio rendering device is configured to receive one or more messages from an other audio rendering device; and wherein the audio rendering device is configured to synchronize the first buffer release times with second buffer release times associated with the other audio rendering device based on the received one or more messages.

Abstract: What is described is a method for loss concealment of spatial audio parameters, the spatial audio parameters having at least a direction of arrival information; the method having the following steps: receiving a first set of spatial audio parameters having at least a first direction of arrival information; receiving a second set of spatial audio parameters, having at least a second direction of arrival information; and replacing the second direction of arrival information of a second set by a replacement direction of arrival information derived from the first direction of arrival information, if at least the second direction of arrival information or a portion of the second direction of arrival information is lost or damaged.

Abstract: In an audio signal processing method and system for echo suppression, selection of a target audio processing mode is controlled based on strength of a speaker signal. In the method and system, a control signal is generated based on the strength of the speaker signal, and the target audio processing mode is controlled based on the control signal to perform signal processing on a microphone signal so as to obtain better voice quality. When the speaker signal does not exceed a threshold, the system selects a first mode, and performs signal processing on a first audio signal and a second audio signal to obtain a first target audio; or when the speaker signal exceeds a threshold, the system selects a second mode, and performs signal processing on a second audio signal to obtain a second target audio, and the mode can be switched based on the speaker signal.

Abstract: The present disclosure provides a microphone apparatus. The microphone apparatus may include a microphone and a vibration sensor. The microphone may be configured to receive a first signal including a voice signal and a first vibration signal. The vibration sensor may be configured to receive a second vibration signal. And the microphone and the vibration sensor are configured such that the first vibration signal may be offset with the second vibration signal.

Abstract: Provided is a tactile sense presentation apparatus that includes a mounting portion, a pump unit, and a control unit. The mounting portion is mounted on a target object and includes a surface material which is deformable in at least a part of a contact portion with the target object. The pump unit includes a flow path, which is connected to the mounting portion, and feeds a fluid for deforming the surface material to the mounting portion. The control unit controls driving of the pump unit.

Abstract: Disclosed embodiments provide flexible performance, high dynamic range, microelectromechanical (MEMS) multipath digital microphones, which allow seamless, low latency transitions between audio signal paths without audible artifacts over interruptions in the audio output signal. Disclosed embodiments facilitate performance and power saving mode transitions maintaining high dynamic range capability.

Abstract: Provided is a bracket for a speaker, the bracket being capable of ensuring the strength when the speaker is attached by using an attachment plate, and also enhancing the workability in folding of the attachment plate when the speaker is attached without using the attachment plate. The present invention includes: a frame-shaped support portion 10 which supports a speaker; and a mounting member 20 which is used for attaching the speaker supported by the support portion 10 to the outside and is provided in the support portion 10, wherein a plurality of grooves having different extension directions are continuously formed on a base part of the mounting member 20, the base part connecting the mounting member 20 and the support portion 10.

Abstract: A power-over-Ethernet (PoE) powered multichannel streaming audio amplifier includes a plurality of Ethernet ports each configured to be coupled to an Ethernet cable and capable of receiving power and audio data transmitted over the Ethernet cables. Power supply circuitry connected to the Ethernet ports is configured to combine and manage the power received at the Ethernet ports. A microprocessor subsystem powered by the power supply circuitry is configured to receive and process the audio data to generate output audio signals. A digital audio amplifier powered by the power supply circuitry amplifies the output audio signals received from the microprocessor system. A plurality of audio outputs connected to the digital audio amplifier are each configured to be connected to a different one of a plurality of speaker devices to transmit the audio output signals amplified by the digital audio amplifier to the plurality of speaker devices.

Abstract: Aspects of the present disclosure relate to power management techniques for reducing the power consumption of playback devices. Additionally, aspects of the present disclosure related to distributed processing techniques for processing audio across two or more processors.

Abstract: A method of controlling headphones having external microphone signal pass-through functionality may involve controlling a display to present a geometric shape on the display and receiving an indication of digit motion from a sensor system associated with the display. The sensor system may include a touch sensor system or a gesture sensor system. The indication may be an indication of a direction of digit motion relative to the display. The method may involve controlling the display to present a sequence of images indicating that the geometric shape either enlarges or contracts, depending on the direction of digit motion and changing a headphone transparency setting according to a current size of the geometric shape. The headphone transparency setting may correspond to an external microphone signal gain setting and/or a media signal gain setting of the headphones.

Abstract: In one aspect, a first playback device is configured to: (i) play back first audio content in synchrony with a second playback device, (ii) receive, via a network interface, a message indicating second audio content to be output by the first playback device, and (iii) in response to receiving the message indicating the second audio content: (a) cease playing back the first audio content in synchrony with the second playback device; (b) play back the second audio content while the second playback device plays back the first audio content; and (c) after playing back the second audio content, resume playing back the first audio content in synchrony with the second playback device.

Abstract: 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.

Abstract: An apparatus comprises a display panel configured to display an image, a vibration apparatus disposed at a rear surface of the display panel and configured to vibrate the display panel, a supporting member at the rear surface of the display panel, and a pad member between the vibration apparatus and the supporting member.

Abstract: The present subject matter provides a hearing device with selective adjustment of processor settings based on various characteristics of an input sound, in response to adjustment of output sound volume by a user. This addresses problems of undesirable sound effects resulting from applying same changes to processor settings to input sounds of all levels, frequencies, and classes.

Abstract: A method may include measuring a physical quantity associated with a load driven by an amplifier, generating a windowing function having a variable length and based on a number of samples of the physical quantity to be processed, applying the windowing function to the physical quantity, performing a transform on the physical quantity as filtered by the windowing function, and determining a characteristic of the load based on the transform.

Abstract: An ear tip includes a body configured to be mounted onto an earbud. The body includes a first end, a second end opposite the first end, and a first wall extending between the first and second ends. The first wall defines and surrounds a hollow passage that is configured to conduct sound waves. The first wall is configured to engage a nozzle on the earbud. The first wall includes a ring that is formed of a rigid material and engages the nozzle. The ring includes at least one C-shaped member with at least one gap and a compliant material is molded around the ring and fills the gap.

Abstract: The subject matter described herein provides systems and techniques for controlling the production of eNoise in an audio playback system. The eNoise may be an audible noise produced when a current, such as a noise/ripple current, flows through a battery of the audio playback system. Such eNoise may be reduced by limiting the current, such as noise/ripple current, flowing through the battery. In some examples, the noise/ripple current may be diverted to the main board of the audio playback system by adding a source of current. A circuit to produce such a current may include transistor(s), capacitor(s), and/or resistor(s). Using the current source and/or such a circuit may also divert the noise/ripple current away from the battery, thereby reducing the eNoise produced.