A method and an apparatus for sound effect compensation, a non-transitory computer-readable storage medium, and a terminal device are provided. The method includes the following. An acoustic transmission function of an audio processing device in an ear canal of a user is determined according to an audio signal currently output from the audio processing device. Compensate for the audio signal according to the acoustic transmission function.

A motion-detection-circuit configured to receive an audio-output-signal and a received-motion-signal. The motion-detection-circuit includes a preliminary-motion-detector configured to process the received-motion-signal in order to set a state of a prelim-motion-detected-signal based on the received-motion-signal; and an ADC for providing an ADC-output-signal that is a digital representation of a signal received at an ADC-input-terminal. The motion-detection-circuit also includes a switch configured to connect either (i) an audio-output-receiver or (ii) a motion-signal-receiver-terminal to the ADC-input-terminal based on the state of the prelim-motion-detected-signal. The motion-detection-circuit further includes a digital-motion-detector configured to, based on the state of the prelim-motion-detected-signal, process the ADC-output-signal in order to set a state of a motion-detection-signal; and a digital-audio-processor configured to, based on the state of the prelim-motion-detected-signal, process the ADC-output-signal in order to provide an audio-input-signal for an audio-output-module.

The invention relates to a method and system for detection of an object in proximity to an electronic device, which method comprises the steps of: producing, via the processing unit using one or more parameters relating to a loudspeaker, a controlled audio signal; amplifying using an amplifier at least said controlled audio signal, thereby producing an amplified audio signal at an amplifier output; wherein an amplitude of the controlled audio signal is such that the amplified audio signal is less than or equal to an amplitude determined to be safe for the loudspeaker in view of the one or more parameters, analyzing at least one of said one or more parameters relating to the loudspeaker to detect a change in response of the loudspeaker; the change in response being caused by an object that is present in the acoustical path of the loudspeaker, determining, based upon the analysis whether the object is located in close proximity to the electronic device.

The present disclosure is directed to a device that includes a headphone speaker housing that includes a coil having a first terminal and a second terminal that is configured to operate in a sound generation mode and a battery charging mode. A class D amplifier circuit is configured to rectify in a battery charging mode and amplify in a sound generation mode, the class D amplifier is coupled to the first terminal and the second terminal of the coil. The class D amplifier including a first, second, third, and fourth switch, the first terminal coupled between the first and second switch, the second terminal coupled between the third and fourth switch. An audio generation circuit having a third terminal and a fourth terminal, the third terminal coupled between the first and third switch of the class D amplifier and the fourth terminal coupled between the second and fourth switch of the class D amplifier. A battery charging circuit coupled to the third terminal and the fourth terminal.

An electronic device is provided. The electronic device includes an interface, and a processor configured to receive an input of a user, output an audio signal by using a first external device connected to the electronic device through the interface, in response to the input of the user, obtain an audio signal reflected on a part of the user of the outputted audio signal, by using the first external device, authenticate the user by using the reflected audio signal and execute a specified function in a unlocked state of the electronic device when the user is a user authenticated for the electronic device.

MEMS device comprising: a signal processing assembly; a transduction module comprising a plurality of transducer devices; a stiffening structure at least partially surrounding each transducer device; one or more coupling pillars for each transducer device, extending on the stiffening structure and configured to physically and electrically couple the transduction module to the signal processing assembly, to carry control signals of the transducer devices. Each conductive coupling element has a section having a shape such as to maximize the overlapping surface with the stiffening structure around the respective transducer device. This shape includes hypocycloid with a number of cusps equal to or greater than three; triangular; quadrangular.

An active noise control device includes an adaptive filter that generates a control signal based on a vibration frequency generated by a vibration source and sequentially updating the adaptive filter, a reference signal generation device that generates a reference signal, an amplitude characteristic calculation device that acquires an acoustic characteristic including amplitude and phase information, the acoustic characteristic being an acoustic characteristic of a secondary path between a speaker and a microphone and calculating an amplitude characteristic of the secondary path, a smoothed signal generation device having a low-pass filter, a correction coefficient calculation device that calculates a correction coefficient according to a frequency, an adaptive filter update device that updates the adaptive filter by subtracting an update term including the correction coefficient from a first adaptive filter coefficient that is an immediately preceding adaptive filter coefficient, and a control signal generation device that generates the control signal.

A method for mechanically driving a display screen to produce acoustic sound may include mechanically driving a first mechanical transducer mechanically coupled to the display screen to generate acoustic sound from the display screen and controlling a second mechanical transducer mechanically coupled to the display screen at a specific location to apply an acoustic null to the specific location in order to localize generation of the acoustic sound from the display screen.

A method for processing signals, a terminal device, and a non-transitory computer-readable storage medium are provided. The method includes the following. When a user talks through the headphone, a first sound signal of external environment and a second sound signal of a talking party are alternately recorded with a headphone. A third sound signal of external environment is obtained, by eliminating voices in the first sound signal according to the second sound signal. Feature audio in the third sound signal of external environment is identified and reminding information corresponding to the feature audio is acquired. Inquire of the user whether the third sound signal is critical according to the reminding information, when the talk ends. An input operation of the user is detected and the third sound signal is processed according to the input operation of the user.

A nonlinear control system and a speaker protection system are disclosed. In particular, a control system for adapting an audio output from a speaker in the proximity of an object is disclosed. The controller is configured to accept one or more input signals, and one or more estimated states produced by the model to produce one or more control signals. A speaker protection system and a quality control system are disclosed. More particularly, a system for clamping the input to a speaker dependent upon an estimate of the proximity, acoustic volume, and/or acoustic coupling of the speaker to a nearby object is disclosed.