Minimizing total harmonic distortion and power supply induced intermodulation distortion in a single-ended class-D pulse width modulation amplifier

Discrimination of light interference in a MEMS microphone

Audio door system

Digital audio power amplifier and power amplifier loop

Booster stage circuit for power amplifier

Methods and systems for managing mixed mode electromechanical actuator drive

CLASS D AMPLIFIER MODULE

Amplifier systems

Signal processor and signal processing method

Combined class d amplifier and buck regulator

Electronic circuit for amplifiers and sound devices for the transfer of electric power between channels

Symmetric layout for high-voltage amplifier

Audio non-linearity cancellation for switches for audio and other applications

Audio system with compressor sidechain frequency-biasing filter for switched-mode power supply overboost energy utilization

Driver circuitry and operation

AUDIO AMPLIFIER WITH INTEGRATED DIGITAL SIGNAL PROCESSING AND SELECTABLE PROFILES

Method and apparatus for balancing detection sensitivity in producing a differential signal

Amplifier-speaker selector for musical instruments

Common mode voltage controller for self-boosting push pull amplifier

Single-ended readout of a differential MEMS device

Differential delta-sigma modulator for a hearing aid

Hybrid mode based audio processing method and apparatus therefor

D/A CONVERTER

AUDIO AMPLIFYING CIRCUIT AND PLAYING DEVICE

Equalization in a multi-path audio amplifier for canceling variations due to multi-path output impedance differences

Signal amplitude-selected signal predistortion in an amplifier

User interface mitigation techniques for modular energy systems

Folded ramp generator

CLASS-D AMPLIFYING SYSTEM AND POWER CONVERTER CIRCUIT THEREOF

Audio amplifier

ENHANCING SPEAKER PROTECTION ACCURACY

Proximity detection

Signal amplifier circuit, voltage converter and system

Audio processing system signal-level based temporal masking

Smart intercom stations for legacy intercom systems

POWER MANAGEMENT AND DISTRIBUTED AUDIO PROCESSING TECHNIQUES FOR PLAYBACK DEVICES

Directional ribbon microphone assembly

Audio source amplification with speaker protection features and internal voltage and current sensing

Headphone driver and driving method thereof

Amplifier circuitry

Amplifier circuitry

Method to reduce noise in microphone circuits

System and method to extend low line operation of flyback converters

MODE-SWITCHING OF AUDIO AMPLIFIERS

Discrimination of light interference in a MEMS microphone

Reducing resistor conductivity modulation during amplification

DYNAMIC AUDIO BROADCASTING METHOD AND AUDIO BROADCASTING APPARATUS

Chop tone management for a current sensor or a voltage sensor

Audio amplifier for use with a limited power source

Method and apparatus for improving signal-to-noise ratio of microphone signal

Zero-crossing management in Class-D audio amplifiers

Amplifier assembly and method of amplification particularly for portable device

Sound modification based on frequency composition

Audio circuit for interfacing with digital or analog audio signals

AUDIO AMPLIFIER WITH SWITCHABLE ACTIVE COMPONENTS

SWITCHING AMPLIFIER ARCHITECTURE WITH MULTIPLE SUPPLIES

CLASS-D AMPLIFIER, A METHOD OF CONTROLLING A GAIN OF AN INPUT AUDIO SIGNAL IN A CLASS-D AMPLIFIER

Audio-haptic signal generator

Increasing power efficiency in a digital feedback class D driver

CLASS-D AMPLIFIER, A METHOD OF GENERATING A CARRIER WAVE SIGNAL IN A CLASS-D AMPLIFIER

Method and device for eliminating unstable noise

Monitoring circuitry

Driver circuit of capacitive speaker

Signal generating circuit and audio processing device

Preamplifying circuit

Amplification systems and methods with one or more channels

Systems and methods for instrument reverberation devices

Driver circuitry

Compact audio power amplifier

Power control and indicator for preamp of acoustic string instrument

Apparatus and method for enhancing call quality of wireless earbuds

Power management and distributed audio processing techniques for playback devices

Controlled rail-voltage decay for boost power supply output protection

Amplifiers

ACOUSTIC ECHO CANCELLATION UNIT

Loudspeaker driver systems

Digital signal generator for audio artefact reduction

Wireless playback device, and playback control method and apparatus thereof

Adaptive control of bias settings in a digital microphone

Audio circuit, electronic device and vehicle audio system with the audio circuit

Offset calibration circuit and offset calibration method applied in signal processing circuit

Current averaging audio amplifier

Monitoring circuitry

Pulse width modulated amplifier

Class-D amplifier

Integrated circuit with switching amplifier output fault detection

Devices and methods for automatic thermal bias of transistors in musical devices

Smart speaker power management

Driver circuit arrangement for driving load and differential drive arrangement thereof

Class D amplifier with current mode control

Sense amplifier circuit

Overpower protection using a power-mirroring resistor

Amplifiers

Class-D amplifier with nested feedback loops

Powered line array speaker system with redundant network and power supply

Protection of speaker from excess excursion

Power control based on packet type

Cavities and active regions

Method and apparatus for recovering back-EMF signal in a switching driver

Dynamic suppression of pop and click noise in an audio driver

Audio amplifier assemblies, processes, and methods

Flexible piezoelectric acoustic sensor fabricated integrally with Si as the supporting substrate, voice sensor using thin film polymer and voice sensor with different thickness and voice sensing method using same

Switching converter for converting a DC input voltage into a DC output voltage

Protection circuitry

Current averaging audio amplifier

Capacitive sensor assemblies and electrical circuits therefor

Audio system for a vehicle and method of installing the audio system

In-vehicle acoustic system and vehicle provided with this in-vehicle acoustic system

Modulator circuit, corresponding device and method

Audio signal amplifier gain control

Amplifier circuits

Power amplifier and vehicle audio system

Audio output device

Method and system for powering an audio amplifier

Time encoding modulator circuitry

Audio amplifier having idle mode

Transducer system with three decibel feedback loop

Horn for an integrated frequency division circuit

Power amplifier and overcurrent protection circuit

Class D amplifiers

Common-mode insensitive current-sensing topology in full-bridge driver with high-side and low-side energy matching calibration

Dual-domain power distribution system in a mobile device

Hearing device comprising an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier

Speaker driver and operation method thereof

Audio Output as Half Duplex Biometric Detection Device

Audio power source with improved efficiency

Electrically isolated device for providing a sub-threshold conduction path for leakage current across a piezoelectric transducer

Device and method for supplying power

Common mode voltage controller for self-boosting push pull amplifier

Amplifier circuit and methods of operation thereof

Audio power amplifier for reduced click and pop (CnP)

Power amplifying device and audio system

Speaker amplifier

Audio processing apparatus, audio crosstalk processing method and apparatus

ADC circuitry

Vehicle and controlling method thereof

Enhancing speaker protection accuracy

Electronic system of active power control for automotive audio amplifiers

Power supply catering to peak current demands of a load

Speaker excursion prediction and protection

Directivity control system

Driver circuitry

Audio amplifier with embedded buck controller for class-G application

Speaker system

Loudspeaker driver systems

Audio amplifier circuitry

Distributed amplification and control system for immersive audio multi-channel amplifier

SOUND QUALITY MODIFICATION ELEMENT, AUDIO SYSTEM, AUDIO AMPLIFIER APPARATUS EQUIPPED WITH SOUND QUALITY MODIFICATION ELEMENT, AND SPEAKER SYSTEM EQUIPPED WITH SOUND QUALITY MODIFICATION ELEMENT

Voltage-to-current architecture and error correction schemes

Headset communication system

Negative feedback system architecture and loop filter thereof

Calibration method for hearing protection devices

Method for carrying out a morphing process

Control circuit and control method of the same

AUDIO OUTPUT DEVICE AND PROTECTION METHOD THEREOF

Folded ramp generator

Class-G control system with low latency signal path

Musical beat detection system and method for lighting control

Method of driving circuit with energy recycle capability

Amplifier systems

Audio power source with improved efficiency

Amplifier arrangement

METHODS AND APPARATUS FOR AN AMPLIFIER CIRCUIT

D-class amplifier circuit and audio amplifying method

Method and system for noise suppression

Multi-transducer sustainer for stringed musical instruments

Structure and method of audio amplifier with power feedback

Protection of speaker from excess excursion

Class-D amplifier and operating method

Peak current limiter

Amplifier with signal dependent mode operation

Feedback system and associated signal processing method

Power control method and related charging system

Electroacoustic convertor, audio device and audio method thereof

Amplifier circuitry

Acoustic approximation for determining excursion limits in speakers

Limiting circuit and electronic device

Method of monitoring electrical loads, corresponding circuit, amplifier and audio system

Apparatus and method for measuring speaker transducer impedance versus frequency with ultralow inaudible signal

Input current-tolerant amplifier input stage for MEMS sensors and other devices

Audio device, electronic device having audio device and audio signal processing method

Loudspeaker with dynamically controlled pairs of voice coil sections

Variable-frequency charge pump using output voltage threshold control

Electronic device with audio zoom and operating method thereof

PWM modulator having quantizer calibratable for multi-non-ideal gain-affecting characteristics

Distortion reducing variable output impedance class-D amplifier

Class-D amplifier with multiple power rails and quantizer that switches used ramp amplitude concurrently with switch in used power rail

Semiconductor device

Display apparatus and method for processing audio

Loudspeaker system and electronics device

Multiphase buck-boost amplifier

Audio codec circuit and method for processing audio data

Circuits, devices and methods related to mode-switching of amplifiers

5G TV, VIDEO PLAYBACK METHOD BASED ON 5G TV, AND READABLE STORAGE MEDIUM

Dynamic biasing circuit

Electronic filter apparatus

Methods and apparatus for volume adjustment

Charge pump with current mode output power throttling

System and a method for detecting loudspeaker chain failure

Three level PWM class D amplifier

Systems, devices, and methods for converting artwork or photographs into audio-enhanced exhibits

Display device and sound providing method thereof

Low-latency compensating audio filters using negative group delay

Amplification systems and methods with distortion reductions

Boost amplifier

INDUCTOR APPARATUS OPTIMIZED FOR LOW POWER LOSS IN CLASS-D AUDIO AMPLIFIER APPLICATIONS AND METHOD FOR MAKING THE SAME

Inductor apparatus optimized for low power loss in class-D audio amplifier applications and method for making the same

Inductor apparatus optimized for low power loss in class-D audio amplifier applications and method for making the same

Amplifier with an at least second order filter in the control loop

Audio amplifiers

Avoiding clipping in audio power delivery by predicting available power supply energy

Amplifier switching control systems and methods

ATV mobile stereo insert

Method for improving die area and power efficiency in high dynamic range digital microphones

Speaker controller, signal supplying device, and speaker system

Integrated circuit and related audio amplifier

Communication apparatus, and medical apparatus

Dynamic biasing circuit

Electronic device comprising speaker

System and method for experiencing music via vibrations

Sensor arrangement

Common source preamplifier for a MEMS capacitive sensor

Speech processing system and speech processing method

Board-level noise reduction during headphone load current sensing

Ramp generator for multilevel class-D amplifiers

Class-D amplifier and sound system

Multilevel class-D power stage including a capacitive charge pump

Acousto-optic Driver and Acousto-optic Device

Modular headphone system

PWM clipping detector circuit, corresponding electronic system and method

Loudspeaker enhancement

Analog based speaker thermal protection in class-D amplifiers

Audio device for reducing pop noise and processing method thereof

Signal tracking-based supply voltage generation with over-boosted voltage

Transducer driver circuitry

Error amplifier

Leakage current detection from bias voltage supply of microphone assembly

Audio power source with improved efficiency

Digital-to-analog converter and amplifier for headphones

Audio play circuit and audio play device

Intelligent power reduction in audio amplifiers

Structure and method of audio amplifier by dynamic impedance adjustment

Audio-haptic signal generator

Audio signal control circuit, audio system, and method of controlling audio signal

Hearing device comprising an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier

Method to control the dynamic range of a signal

Programmable gain amplifier systems and methods

Amplification systems and methods with output regulation

Electronic device and method for controling the electronic device thereof

Modular signal conversion apparatus and method

Electronic device including earphone, and method of controlling the electronic device

Switch arrangements

Dual-domain power distribution system in a mobile device

Controller for an electromechanical transducer

Sigma delta analog to digital converter

Audio amplifier with embedded buck controller for class-G application

Class-D amplifier and method

Power amplifying device and audio equipment

Tuning system and method for automobile power amplifier

WIRING STRUCTURE FOR AUDIO SIGNAL CONVERSION APPARATUS FOR IMPROVING CROSS-TALK, AND AUDIO SIGNAL CONVERSION APPARATUS

Distortion imparting device and distortion imparting method

Class D amplifiers

Amplifiers

Load box and sound quality improving method

Electronic device and control method thereof

Pulse-width modulation

Signal amplifier circuit, voltage converter and system

Audio power source with improved efficiency

Amplifying device

Signal transmission system, transmission device, and communication unit

Audio processing circuit and terminal device

Amplifying device and controlling method therefor

System and method for controlling a charge pump

Chopped triangular wave PWM quantizer

PWM modulator having quantizer with controllable analog gain and calibratable for multi-non-ideal gain-affecting characteristics

Apparatus for discarding power noise, and apparatus for converting audio signal

Resistive DAC with summing junction switches, current output reference, and output routing methods

Methods and apparatus for an amplifier circuit

Modular multichannel audio connection system

Current-source switching hybrid audio amplifier

Increased output impedance switching amplifier and low-side recycle mode

Amplifier power converter input current/power limit adjustment using amplifier load determinations

Audio processing system

Audio processing device and method for controlling audio processing device

Method for overtemperature protection and audio apparatus

System and method for controlling a charge pump

Temperature detecting and controlling integration device and the temperature controlling method applied for micro speaker

Audio processing device and method for controlling audio processing device

Semiconductor device and sound output device

Audio switching circuit

Methods and apparatus for voltage buffering

Power supply circuit and audio play device

Determination of effects of physical activity on electrical load devices

Dual-mode acoustic radiator speaker system

Energy efficient clip limiting voltage controlled amplifier

Audible noise reduction in an audio power amplifier

Receiving apparatus and signal transmitting system

Method for improving die area and power efficiency in high dynamic range digital microphones

Preamplifier circuit configuration

Amplifier offset cancellation using amplifier supply voltage