Abstract: Provided is an energy harvesting system, including: a first electrode; a second electrode; a non-metalized mono-charged electret diaphragm disposed between the first and second electrodes; a base; a spring extending between the base and the electret diaphragm; and a rod in communication with the electret diaphragm and for manipulating a position of the electret diaphragm relative to the first and second electrodes.

Abstract: A resonance flat panel speaker includes a wireless music vibration body, at least one resonance sounding board and a resonance sounding cloth arranged in the wireless music vibration body. A first surface of the resonance sounding board is attached to a sound vibrator in the wireless music vibration body. A second surface of the resonance sounding board is attached to an inner surface of the resonance sounding cloth. The resonance sounding cloth is combined with an outer frame of the wireless music vibration body with a tensile force of 5 kg-20 kg. The resonance sounding board is matched with different audio resonance points of the resonance sounding cloth to produce a full range flat panel speaker.

Abstract: The technology disclosed herein enables retention of a speaker on a mounting surface using a clip and a flange. In a particular embodiment, an apparatus includes a speaker comprising a substantially elliptic speaker frame. The apparatus further includes a mounting surface comprising a substantially cylindrical flange into which the speaker frame is positioned. Also, the apparatus includes a substantially elliptic clip positioned in the flange between the speaker frame and a retaining rim of the flange.

Abstract: An example method of operation may include designating sub-regions which collectively provide a defined reception space, receiving audio signals at a controller from the microphone arrays in the defined reception space, configuring the controller with known locations of each of the microphone arrays, assigning each of the sub-regions to at least one of the microphone arrays based on the known locations, and creating beamform tracking configurations for each of the microphone arrays based on their assigned sub-regions.

Abstract: An active noise cancellation (ANC) system may include an adaptive filter divergence detector for detecting divergence of the one or more controllable filters as they adapt, based on dynamically adapted thresholds. Upon detection of a controllable filter divergence, the ANC system may be deactivated, or certain speakers may be muted. Alternatively, the ANC system may modify the diverged controllable filters to restore proper operation of the noise cancelling system.

Abstract: This disclosure relates to techniques for generating physically accurate auralization of sound propagation in complex environments, while accounting for important wave effects, such as sound absorption, sound scattering, and airborne sound insulation between rooms. According to some embodiments, techniques may be utilized to determine more accurate, e.g., “acoustically-effective” room volumes that account for open windows, open doors, acoustic dead space, and the like. According to other embodiments disclosed herein, techniques may be utilized to perform optimized hybrid acoustical ray tracing, including grouping coherent rays by processing core.

Abstract: Systems and methods for detecting and configuring passive speakers within a playback system using a graphical user interface are disclosed. In one embodiment, a method of for detecting and configuration passive speakers in a playback system using a mobile device includes deriving speaker identification data concerning one or more passive speakers connected to an audio device in a playback system based upon at least an electrical signal sent to and returned from the one or more passive speakers, where the electrical signal is sent by the audio device including an audio stage comprising one or more amplifiers, and where the speaker identification data comprises information identifying a type of speaker, and displaying a graphical user interface screen on a mobile device based upon the identified type of speaker, where the displayed information and selectable options are dependent upon the identified type of speaker.

Abstract: 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.

Abstract: An ear-plug assembly presents audio content to an ear canal of a user. The audio content may be based in part on sound in a local area surrounding the user. The ear-plug assembly detects, via one or more acoustic sensors, sound in the area around the user. The sound waves travel through an aperture in a body of the ear-plug assembly and are propagated to a waveguide to the one or more acoustic sensors. The ear-plug assembly processes the detected sound data in a controller, which instructs a speaker assembly to present audio content based in part on the detected sound data. The detected sounds may be amplified, attenuated, filtered, and/or augmented when presented by the speaker assembly.

Abstract: This disclosure relates to techniques for generating physically accurate auralization of sound propagation in complex environments, while accounting for important wave effects, such as sound absorption, sound scattering, and airborne sound insulation between rooms. According to some embodiments, techniques may be utilized to determine more accurate, e.g., “acoustically-effective” room volumes that account for open windows, open doors, acoustic dead space, and the like. According to other embodiments disclosed herein, techniques may be utilized to perform optimized hybrid acoustical ray tracing, including grouping coherent rays by processing core.

Abstract: A speaker unit includes a speaker frame and two opposing membranes each being arranged to move up and down along a main speaker axis (A). Two drive units are present for each membrane, having a driver static part and a driver moving part. A sealing edge suspension is connected to a perimeter of the associated membrane and to the major front surface and major back surface of the speaker unit, respectively. For each driver moving part, a spider arm suspension is present for suspending the driver moving part to the speaker frame in a flexible manner. The sealing edge suspension is at least partially positioned above the associated drive units when viewed in a direction parallel to the main speaker axis (A).

Abstract: An electronic device according to various embodiments includes a housing including an acoustic channel and a nozzle portion having an opening formed therein for connecting the acoustic channel to an outside of the electronic device, and an eartip detachably engaged with the housing through at least a portion of the nozzle portion. The eartip includes a first area, at least a portion of which is formed of an elastic material and comes into contact with an object, and a second area, at least a portion of which is formed of an elastic material and surrounds at least a portion of the nozzle portion. The second area includes a first portion having a hole having a first size and a second portion having a second size larger than the first size, and a protrusion is formed at an end of the second portion in a first direction.

Abstract: A loudspeaker includes a housing that has a plurality of walls, which together define an acoustic cavity. An electro-acoustic transducer is mounted to a front wall of the housing, and a motion axis of the electro-acoustic transducer is offset from a centroid of the front wall. The loudspeaker is configured to be stacked with an other loudspeaker of identical construction in a first configuration such that the stacked loudspeakers radiate acoustic energy to produce an omnidirectional radiation pattern; and in a second configuration such that the stacked loudspeakers radiate acoustic energy to produce a cardioid radiation pattern. The loudspeaker includes keyed features which do not interlock and thereby inhibit stacking when the loudspeaker is in a first orientation relative to the other loudspeaker, and which interlock to allow stacking when the loudspeaker is in a second orientation relative to the other loudspeaker.

Abstract: An apparatus for generating an enhanced sound field description has: a sound field generator for generating at least two sound field layer descriptions indicating sound fields with respect to at least one reference location; and a meta data generator for generating meta data relating to spatial information of the sound fields, wherein the sound field descriptions and the meta data constitute the enhanced sound field description. The meta data can be a geometrical information for each layer such as a representative distance to the reference location.

Abstract: A display apparatus includes a display panel including configured to display an image and a sound generating device on a rear surface of the display panel, the sound generating device being configured to vibrate the display panel to generate sound. The sound generating device includes a first structure and a second structure over or under the first structure, the second structure including a first part having a piezoelectric characteristic and a second part between adjacent first parts to have flexibility.

Abstract: A terminal is provided with a first audio output unit and a second audio output unit configured to output an audio content, and the terminal includes: an audio acquiring unit configured to acquire a first audio content and a second audio content; a setting unit configured to set information indicating an output destination of the first audio content and the second audio content; and an audio output controller configured to output the first audio content to one of the first audio output unit and the second audio output unit and output the second audio content to the other of the first audio output unit and the second audio output unit based on the information set by the setting unit.

Abstract: Provided are an electroacoustic transduction film capable of reproducing a sound with a sufficient sound volume at a high conversion efficiency, a manufacturing method thereof, an electroacoustic transducer, a flexible display, a vocal cord microphone, and a sensor for a musical instrument.

Abstract: A display apparatus includes: a display panel configured to display an image, a sound generation device configured to vibrate the display panel to generate sound, a supporting member on a rear surface of the display panel, and a partition surrounding the sound generation device, the partition including an edge having a partition edge contour shape that differs from a panel edge contour shape of the display panel.

Abstract: Disclosed are devices, systems and methods for binaural spatial audio processing based on a pair of head-related transfer functions (HRTFs) for each of a listener's two ears to synthesize a binaural sound that seems to come from a particular point in space. Applications of the disclosed devices, systems and methods include digital audio reproduction, recording, and multimedia applications including virtual reality and augmented reality experiences.

Abstract: A sound analysis apparatus includes a sound acquirer configured to acquire a sound signal, a measurer configured to output time-series data of numerical values representing volumes based on the sound signal, and a calculator configured to perform calculation for analyzing the time-series data output from the measurer, wherein the calculator performs the calculation in a case of a first state in which a measured value that is the numerical value output from the measurer is included within an analysis target range that is a range in which the measured value is determined to be an analysis target, and wherein the calculator does not perform the calculation in a case of a second state in which the measured value is not included within the analysis target range.