Abstract: This document describes a system including a printed circuit board oriented along a first plane, the printed circuit board having a device that extends in a direction away from the first plane and is capable of producing a radiated signal or is sensitive to a radiated signal produced by another device. The system includes a component shield with a wall structure and a cover structure, the cover structure connected to the wall structure. A housing structure oriented along a second plane defines a shielded space within which the component shield and the device reside. A shielding layer oriented along a third plane substantially parallel with the second plane is disposed at least partially between the cover structure and the housing structure and configured to attenuate radiated signals. A number of capacitor spot welds affix the shielding layer to the cover structure to improve component shielding.

Abstract: The invention discloses a stereo enhancement system and a stereo enhancement method. The stereo enhancement system includes a beamforming unit and a signal processing unit. The beamforming unit is used for receiving a plurality of input sound signals and generating a plurality of beamforming sound signals corresponding to a plurality of direction intervals respectively. The signal processing unit is coupled to the beamforming unit and used for receiving the plurality of beamforming sound signals corresponding to the plurality of direction intervals respectively and generating a first synthesized output sound signal and a second synthesized sound signal accordingly.

Abstract: A microphone system for a boomless headset is disclosed, comprising a microphone array and a processing unit. The microphone array comprises Q microphones and generates Q audio signals. A first microphone and a second microphone are disposed on different earcups, and a third microphone is disposed on one of two earcups and displaced laterally and vertically from one of the first and the second microphones. The processing unit performs operations comprising: performing spatial filtering over the Q audio signals using a trained model based on an arc line with a vertical distance and a horizontal distance from a midpoint between the first and the second microphones, a time delay range for the first and the second microphones and coordinates of the Q microphones to generate a beamformed output signal originated from zero or more target sound sources inside a target beam area, where Q>=3.

Abstract: A microphone system is disclosed, comprising: a microphone array and a processing unit. The microphone array comprises Q microphones that detect sound and generate Q audio signals. The processing unit is configured to perform operations comprising: spatial filtering over the Q audio signals using a trained model based on at least one target beam area (TBA) and coordinates of the Q microphones to generate a beamformed output signal originated from ? target sound source inside the at least one TBA, where ?>=0. Each TBA is defined by r time delay ranges for r combinations of two microphones out of the Q microphones, where Q>=3 and r>=1. A dimension of a first number for locations of all sound sources able to be distinguished by the processing unit increases as a dimension of a second number for a geometry formed by the Q microphones increases.

Abstract: A microphone system for a boomless headset is disclosed, comprising a microphone array and a processing unit. The microphone array comprises Q microphones and generates Q audio signals. A first microphone and a second microphone are disposed on different earcups, and a third microphone is disposed on one of two earcups and displaced laterally and vertically from one of the first and the second microphones. The processing unit performs operations comprising: performing spatial filtering over the Q audio signals using a trained model based on an arc line with a vertical distance and a horizontal distance from a midpoint between the first and the second microphones, a time delay range for the first and the second microphones and coordinates of the Q microphones to generate a beamformed output signal originated from zero or more target sound sources inside a target beam area, where Q>=3.

Abstract: Techniques and apparatuses directed to component shielding are described in this document. A first aspect relates to a system including a printed circuit board (PCB) oriented along a first plane, a device on the PCB, and a component shield having a wall structure oriented perpendicular to the first plane and a cover structure connected to the wall structure. The system includes a housing structure oriented along a second plane that is substantially parallel to the first plane. The first and second planes define a shielded space within which the component shield and the device reside. The system further includes a shielding layer residing at least partially between the cover and housing structures. The shielding layer has an irregular cross-section along a fourth plane perpendicular to at least one of the first or second planes and a third plane. The irregular cross-section includes a protrusion that extends from the third plane.

Abstract: The invention discloses a stereo enhancement system and a stereo enhancement method. The stereo enhancement system includes a beamforming unit and a signal processing unit. The beamforming unit is used for receiving a plurality of input sound signals and generating a plurality of beamforming sound signals corresponding to a plurality of direction intervals respectively. The signal processing unit is coupled to the beamforming unit and used for receiving the plurality of beamforming sound signals corresponding to the plurality of direction intervals respectively and generating a first synthesized output sound signal and a second synthesized sound signal accordingly.

Abstract: A microphone system is disclosed, comprising: a microphone array and a processing unit. The microphone array comprises Q microphones that detect sound and generate Q audio signals. The processing unit is configured to perform operations comprising: spatial filtering over the Q audio signals using a trained model based on at least one target beam area (TBA) and coordinates of the Q microphones to generate a beamformed output signal originated from ? target sound source inside the at least one TBA, where ?>=0. Each TBA is defined by r time delay ranges for r combinations of two microphones out of the Q microphones, where Q>=3 and r>=1. A dimension of a first number for locations of all sound sources able to be distinguished by the processing unit increases as a dimension of a second number for a geometry formed by the Q microphones increases.

Abstract: A voice event detection apparatus is disclosed. The apparatus comprises a vibration to digital converter and a computing unit. The vibration to digital converter is configured to convert an input audio signal into vibration data. The computing unit is configured to trigger a downstream module according to a sum of vibration counts of the vibration data for a number X of frames. In an embodiment, the voice event detection apparatus is capable of correctly distinguishing a wake phoneme from the input vibration data so as to trigger a downstream module of a computing system. Thus, the power consumption of the computing system is saved.

Abstract: A voice event detection apparatus is disclosed. The apparatus comprises a vibration to digital converter and a computing unit. The vibration to digital converter is configured to convert an input audio signal into vibration data. The computing unit is configured to trigger a downstream module according to a sum of vibration counts of the vibration data for a number X of frames. In an embodiment, the voice event detection apparatus is capable of correctly distinguishing a wake phoneme from the input vibration data so as to trigger a downstream module of a computing system. Thus, the power consumption of the computing system is saved.

Abstract: An enhancement mode GaN transistor is provided, which includes a GaN layer, a quantum well structure, a gate, a source a drain and a first barrier layer. The quantum well structure is disposed on the upper surface of the GaN layer. The gate is disposed on the quantum well structure. The source is disposed on one end of the upper surface of the GaN layer. The drain is disposed on the other end of the upper surface of the GaN layer. The first barrier layer is disposed on the upper surface of the GaN layer and extends to the lateral surfaces of the quantum well structure.

Abstract: An enhancement mode GaN transistor is provided, which includes a GaN layer, a quantum well structure, a gate, a source a drain and a first barrier layer. The quantum well structure is disposed on the upper surface of the GaN layer. The gate is disposed on the quantum well structure. The source is disposed on one end of the upper surface of the GaN layer. The drain is disposed on the other end of the upper surface of the GaN layer. The first barrier layer is disposed on the upper surface of the GaN layer and extends to the lateral surfaces of the quantum well structure.

Abstract: A sleep quality management apparatus includes a sensor module and a processing unit. The sensor module is configured to provide a heart rate signal and a skin conductance signal. The processing unit is coupled to the sensor module. The processing unit is configured to determine a sleep stage and a stress level according to the heart rate signal and the skin conductance signal so as to identify a stressful dream occurrence. The stressful dream occurrence is identified when the sleep stage corresponds to a rapid eye movement (REM) stage and the stress level corresponds to a stressful state.

Abstract: Embodiments of the invention disclose a signal processing device and a signal processing method and a device and a method for signal processing. The signal processing device includes a sampling module, a first segmentation module, a second segmentation module, and a detection module. The sampling module samples an input signal to generate a sample signal. The first segmentation module calculates a first segment value according to the sample signal during a first time interval. The second segmentation module calculates a second segment value according to the sample signal during a second time interval different in length from the first time interval. The detection module generates a detection signal according to the determination of whether the first segment value lies out of a first range, and whether the second segment value lies out of a second range.

Abstract: The present invention relates to provide an anticorrosive layer having a biomimetic surface nano microstructure and the application. The anticorrosive layer comprises a polymer and a nano-particle. Both of the nano-particle and the biomimetic surface nano microstructure are required for the anticorrosive layer to effectively enhance the anticorrosive performance.

Abstract: The present invention provides a polymer and graphene blended electroactive composite coating material and method for preparing the same. The composite coating material is a composite material formed by blending a specific polymer and graphene; where the specific polymer is formed by polymerization of (A) aniline oligomer and (B) amino reactive monomer together with (C) modified graphene and is a kind of polymer selected by the group consisting of the following: epoxy resin, polyimide, polyamide, polyurethane, polylactic acid; (C) modified graphene is uniformly dispersed in the matrix of the specific polymer but not involved in polymerization; and the composite coating material is electroactive.

Abstract: Embodiments of the invention disclose an ECG device, an ECG signal processing method, an ECG lead signal generating circuit, an ECG signal generating method, another ECG device, another ECG signal processing method, and an ECG electrode assembly. The ECG device has an electrode assembly and an ECG lead signal generating circuit. The electrode assembly has three cardio enclosure electrodes for acquiring three cardio enclosure voltages, respectively. The ECG lead signal generating circuit has a first precordial lead generator. The first precordial lead generator is configured to generate a first modified precordial lead according to the three cardio enclosure voltages, wherein the three cardio enclosure voltages are sufficient for generating the first modified precordial lead.

Abstract: A multimedia data system comprising a synchronization unit. The synchronization unit receives a demodulated bitstream, checks whether a FAW pattern corresponding to a candidate of the bitstream exists, checks whether an additional information corresponding to the candidate of the bitstream is valid when the FAW pattern exists, determines a hit weighting corresponding to the candidate according to the checking result, determines whether the hit weighting meets a criterion and outputs a synchronization signal when the hit weighting meets the criterion.

Abstract: Embodiments of the invention disclose an ECG device, an ECG signal processing method, an ECG lead signal generating circuit, an ECG signal generating method, another ECG device, another ECG signal processing method, and an ECG electrode assembly. The ECG device has an electrode assembly and an ECG lead signal generating circuit. The electrode assembly has three cardio enclosure electrodes for acquiring three cardio enclosure voltages, respectively. The ECG lead signal generating circuit has a first precordial lead generator. The first precordial lead generator is configured to generate a first modified precordial lead according to the three cardio enclosure voltages, wherein the three cardio enclosure voltages are sufficient for generating the first modified precordial lead.

Abstract: An embodiment of the invention provides a patch for bio-electrical signal processing. The patch for bio-electrical signal processing includes a patch main body, a set of electrodes, and a lead signal generator. The patch main body has a folded state and an unfolded state. In each of the folded state and the unfolded state the patch main body is configured to be adhered to a living subject. The set of electrodes is disposed on the patch main body, and is configured to collect a set of skin voltages from the living subject. The lead signal generator is coupled to the set of electrodes, housed in the patch main body, and configured to receive the set of skin voltages from the set of electrodes and to generate a set of lead signals.