Abstract: An auxiliary circuit for reducing an output voltage ripple of a DC-DC converter includes: a capacitor configured to perform charging and discharging, a main buck converter including a first switch and a second switch connected to a voltage source, and a first inductor connected between the capacitor and a contact point of the first switch and the second switch, the first inductor having a first inductor current that flows therethrough, and an auxiliary buck converter including a third switch and a fourth switch respectively connected to the first switch and the second switch in parallel, and a second inductor connected between the capacitor and a contact point of the third switch and the fourth switch, the second inductor having a second inductor current that flows therethrough, and the auxiliary buck converter configured to control the second inductor current by generating two envelopes with different heights to compensate for a difference between the first inductor current and an output current.

Abstract: Provided is an encoding apparatus including a memory configured to store instructions and a processor electrically connected to the memory and configured to execute the instructions, wherein the processor may be configured to perform a plurality of operations, when the instructions are executed by the processor, wherein the plurality of operations may include obtaining an input audio signal, generating an embedded audio signal by embedding signal components of a second frequency band of the input audio signal in a first frequency band of the input audio signal, generating additional information associated with the first frequency band and the second frequency band, generating an encoded audio signal by encoding the embedded audio signal, and formatting the encoded audio signal and the additional information into a bitstream.

Abstract: Provided is an encoding apparatus including a memory configured to store instructions and a processor electrically connected to the memory and configured to execute the instructions, wherein the processor may be configured to perform a plurality of operations, when the instructions are executed by the processor, wherein the plurality of operations may include obtaining an input audio signal, generating an embedded audio signal by embedding signal components of a second frequency band of the input audio signal in a first frequency band of the input audio signal, generating additional information associated with the first frequency band and the second frequency band, generating an encoded audio signal by encoding the embedded audio signal, and formatting the encoded audio signal and the additional information into a bitstream.

Abstract: An audio encoding/decoding apparatus and method using vector quantized residual error features are disclosed. An audio signal encoding method includes outputting a bitstream of a main codec by encoding an original signal, decoding the bitstream of the main codec, determining a residual error feature vector from a feature vector of a decoded signal and a feature vector of the original signal, and outputting a bitstream of additional information by encoding the residual error feature vector.

Abstract: A method of encoding an audio signal and an encoder and a method of decoding an audio signal and a decoder are provided. The method of encoding an audio signal includes outputting a decoded signal by using a bitstream that encodes an audio signal, separating the decoded signal into a low-band signal and a high-band signal by using a sound source separator, upsampling the low-band signal, upsampling the high-band signal, and restoring the audio signal by synthesizing the upsampled low-band signal with the upsampled high-band signal, wherein the bitstream is generated by encoding a superimposed signal in which a signal in a high frequency band of the audio signal is superimposed on a low frequency band of the audio signal.

Abstract: An auxiliary circuit for reducing an output voltage ripple of a DC-DC converter includes: a capacitor configured to perform charging and discharging, a main buck converter including a first switch and a second switch connected to a voltage source, and a first inductor connected between the capacitor and a contact point of the first switch and the second switch, the first inductor having a first inductor current that flows therethrough, and an auxiliary buck converter including a third switch and a fourth switch respectively connected to the first switch and the second switch in parallel, and a second inductor connected between the capacitor and a contact point of the third switch and the fourth switch, the second inductor having a second inductor current that flows therethrough, and the auxiliary buck converter configured to control the second inductor current by generating two envelopes with different heights to compensate for a difference between the first inductor current and an output current.

Abstract: An audio encoding/decoding apparatus and method using vector quantized residual error features are disclosed. An audio signal encoding method includes outputting a bitstream of a main codec by encoding an original signal, decoding the bitstream of the main codec, determining a residual error feature vector from a feature vector of a decoded signal and a feature vector of the original signal, and outputting a bitstream of additional information by encoding the residual error feature vector.

Abstract: A speech processing apparatus includes a plurality of microphones configured to receive a plurality of input signals, and processing circuitry configured to generate a spatial filtering signal corresponding to the plurality of input signals through spatial filtering, generate estimated noise information by integrating directional noise information representing a level of a noise signal received from a direction of interest with diffuse noise information representing levels of noise signals received from various directions based on whether the plurality of input signals have directionality, and generate an estimated speech signal by filtering the spatial filtering signal based on the estimated noise information.

Abstract: A speech processing apparatus includes a plurality of microphones configured to receive a plurality of input signals, and processing circuitry configured to generate a spatial filtering signal corresponding to the plurality of input signals through spatial filtering, generate estimated noise information by integrating directional noise information representing a level of a noise signal received from a direction of interest with diffuse noise information representing levels of noise signals received from various directions based on whether the plurality of input signals have directionality, and generate an estimated speech signal by filtering the spatial filtering signal based on the estimated noise information.

Abstract: A device includes a memory configured to store a captured audio input signal and one or more processors configured to process the captured audio input signal to determine auditory context information within the captured audio input signal. The one or more processors are configured to determine an audio quality enhancement level to be applied to the captured audio input signal based on the determined auditory context information, and perform audio quality enhancement on the captured audio input signal based on the determined audio quality enhancement level, wherein the audio quality enhancement level is dynamically adjusted during the storing of the captured audio input signal according to the determined auditory context information.

Abstract: Core-coil devices operate by electromagnetic induction and include inductors, transformers, and electromagnets. Cooled core-coil devices include a magnetic core having a channel through it, and a coil wound around the core. Cooled core-coil devices additionally include a coolant loop that carries ferrofluid coolant through the channel and forms a loop with the channel that extends outside the core. Ferrofluid coolant circulates in the loop without a pump due to a thermo-magnetic response to the device's thermal and magnetic field gradients and thereby cools the core while simultaneously adding to the device's inductance.

Abstract: Methods, systems, and apparatus for wirelessly providing power to a vehicle. The system includes a plurality of ground-side wireless power transfer devices each configured to automatically provide power to a counterpart vehicle-side wireless power transfer device. The system includes a switch connecting a power source to the plurality of ground-side wireless power transfer devices and configured to be in an open position or a closed position. The system includes a vehicle position sensor configured to detect the vehicle being within a range of the plurality of ground-side wireless power transfer devices. The system includes a switch driver configured to move the switch from the open position to the closed position when the vehicle position sensor detects the vehicle being within the range, and move the switch from the closed position to the open position when the vehicle position sensor does not detect the vehicle being within the range.

Abstract: Embodiments described herein generally relate to an assembly including a manifold structure. The manifold structure includes a fluid inlet and a fluid outlet. The fluid inlet is for receiving a cooling fluid into the manifold structure and the fluid outlet is for removing the cooling fluid from the manifold structure. The manifold structure also includes a first cooling surface and an opposite second cooling surface. The first cooling surface includes a cooling chip inlet opening fluidly coupled to a cooling chip outlet opening. The fluid inlet is fluidly coupled to the cooling chip inlet opening. The second cooling surface includes a cavity. A first integrated fluid channel fluidly couples the cooling chip outlet opening to the cavity and a second integrated fluid channel fluidly couples the cavity to the fluid outlet. A cooling chip includes a plurality of microchannels, which fluidly couple the cooling chip to the first cooling surface.

Abstract: Transformers having a plurality of windings from a single Litz wire, as well as systems including such transformers and methods of providing such transformers are disclosed. A transformer includes a core and a single Litz wire having a plurality of individual strands of conductive material. The plurality of individual strands of conductive material are separated into a plurality of groups, each one of the plurality of groups being a winding of the transformer such that the transformer comprises a plurality of windings.

Abstract: An electronics control system includes a power control unit disposed above a graphics processing unit and thermally connected to a cooling assembly inside. The system also includes a graphics processing unit disposed below the power control unit and thermally connected to the cooling assembly, an auxiliary DC-DC converter disposed below the power control unit and thermally connected to the cooling assembly, and a cooling assembly disposed at a predetermined location and configured to simultaneously transfer heat away from a power control unit, graphics processing unit, and auxiliary DC-DC converter via fluid circulation are presented.

Abstract: Methods, systems, and apparatus for an electric vehicle. The system includes a battery control unit configured to be in a grid-connected mode or a stand-alone mode. The system includes a shared boost converter connected to a battery. The shared boost converter receives alternating current (AC) power, steps up voltage and converts the AC power to direct current (DC) power when the battery control unit is in the grid-connected mode. The shared boost converter receives DC power from the battery and steps up voltage when the battery control unit is in the stand-alone mode. The system also includes an inverter configured to receive the stepped up DC power when the battery control unit is in the stand-alone mode and convert the DC power to AC power. The system also includes a motor/generator connected to the inverter and configured to receive AC power for powering a drivetrain of the electric vehicle.

Abstract: Core-coil devices operate by electromagnetic induction and include inductors, transformers, and electromagnets. Cooled core-coil devices include a magnetic core having a channel through it, and a coil wound around the core. Cooled core-coil devices additionally include a coolant loop that carries ferrofluid coolant through the channel and forms a loop with the channel that extends outside the core. Ferrofluid coolant circulates in the loop without a pump due to a thermo-magnetic response to the device's thermal and magnetic field gradients and thereby cools the core while simultaneously adding to the device's inductance.

Abstract: A capacitive wireless charging system having a charging circuit and the operating characteristics of the charging circuit can be adjusted. The charging circuit includes two coupling capacitors formed by two electrode plates at least partially overlapping two other electrode plates, where the coupling characteristics of the coupling capacitors can be adjusted by moving at least one of the electrodes. When the coupling characteristics of the coupling capacitors reach a pre-determined threshold, the operating characteristics of the charging circuit can be adjusted to optimize the power transfer efficiency of the capacitive wireless charging system.

Abstract: A transformer includes a magnetic core assembly including a cylindrical bobbin around which transformer windings are wrapped. Primary transformer windings are wrapped around the cylindrical bobbin of the magnetic core assembly with additional primary transformer windings that are extended to come in contact with one or more external surfaces of the magnetic core assembly. Secondary transformer windings are wrapped around the cylindrical bobbin of the magnetic core assembly with additional secondary transformer windings that are extended to come in contact with the one or more external surfaces of the magnetic core assembly.

Abstract: Embodiments described herein generally relate to an assembly including a manifold structure. The manifold structure includes a fluid inlet and a fluid outlet. The fluid inlet is for receiving a cooling fluid into the manifold structure and the fluid outlet is for removing the cooling fluid from the manifold structure. The manifold structure also includes a first cooling surface and an opposite second cooling surface. The first cooling surface includes a cooling chip inlet opening fluidly coupled to a cooling chip outlet opening. The fluid inlet is fluidly coupled to the cooling chip inlet opening. The second cooling surface includes a cavity. A first integrated fluid channel fluidly couples the cooling chip outlet opening to the cavity and a second integrated fluid channel fluidly couples the cavity to the fluid outlet. A cooling chip includes a plurality of microchannels, which fluidly couple the cooling chip to the first cooling surface.