Abstract: Embodiments of this application provide an electronic device and a parameter determining method for an electronic device. The electronic device includes a first sound emitting unit, a second sound emitting unit, a first delay compensation unit, a first phase compensation unit, and a first amplitude compensation unit. The first delay compensation unit is configured to obtain a first playing audio signal. The first sound emitting unit is configured to emit a first playing sound signal based on the first playing audio signal. The first phase compensation unit and the first amplitude compensation unit are configured to respectively adjust a phase and an amplitude of the first original audio signal based on a first phase compensation function and a first amplitude compensation function, to obtain a first cancellation audio signal. The second sound emitting unit is configured to emit a first cancellation sound signal based on the first cancellation audio signal.

Abstract: Embodiments of this application provide a voice signal output method and an electronic device. The method includes: generating a first voice signal as an interfering signal based on a downlink voice signal; generating a second voice signal by performing delay processing on the downlink voice signal, where the second voice signal has a same delay as the first voice signal; and at a same output time, outputting the second voice signal using a first sound production assembly close to a human ear, and outputting the first voice signal using a second sound production assembly far from the human ear. This masks the downlink voice signal with the interfering signal, preventing others from clearly hearing the call content of the user and protecting user privacy.

Abstract: A kernel of a speaker module, a speaker module, and an earphone are provided and related to the field of electronic product technologies. The kernel includes a first diaphragm assembly, a first voice coil, a magnetic circuit system, a second diaphragm assembly, and a second voice coil. The magnetic circuit system includes a first magnetic portion, a second magnetic portion, and a third magnetic portion. The first magnetic portion surrounds a periphery of the second magnetic portion. The first voice coil cooperates with the first magnetic portion and the second magnetic portion to drive the first diaphragm assembly to vibrate. The second voice coil is fastened to the second diaphragm assembly, and the second diaphragm and the first diaphragm assembly are arranged on the magnetic circuit system. The second voice coil cooperates with the second magnetic portion to drive the second diaphragm assembly to vibrate.

Abstract: Embodiments of the present invention provide a sound recording method and apparatus. The method includes: displaying, by a terminal device, a first interface, where the first interface includes a first control, and the first control includes: a first option used for selecting a recording whose output specification is sound quality with a first bit width, and a second option used for selecting a recording whose output specification is sound quality of a second bit width; and processing, by the terminal device in a case that the terminal device receives an operation of selecting the first option, a recording obtained by a microphone, to obtain a recording with the first bit width; or processing, by the terminal device in a case that the terminal device receives an operation of selecting the second option, a recording obtained by a microphone, to obtain a recording with the second bit width.

Abstract: A speaker module and a headset (100) are provided. The speaker module is used for the headset (100). The headset (100) includes a housing (1). The speaker module includes a first speaker unit (4a) and a second speaker unit (4b). An outer surface of a first diaphragm assembly (4a21) of the first speaker unit (4a) faces a first side, the second speaker unit (4b) is located on one side of a circumferential direction of the first speaker unit (4a), the second speaker unit (4b) emits sound toward the first side, and sound emission frequency of the second speaker unit (4b) is greater than sound emission frequency of the first speaker unit (4a).

Abstract: A backlight circuit includes a backlight power supply chip and an adjustable resistor circuit. The backlight power supply chip includes a set pin configured to set a reference current, an input pin, and an output pin. One end of the adjustable resistor circuit is connected to the set pin. The adjustable resistor circuit further includes a control end, where the control end is configured to receive a switching signal. Based on the switching signal, the adjustable resistor circuit selects a resistor branch from a first resistor branch and a second resistor branch to connect to the set pin for generating the reference current. The backlight power supply chip is configured to generate a drive current based on the reference current and a duty cycle of a pulse-width modulation (PWM) signal received by the input pin, and output the drive current by using the output pin.

Abstract: A backlight circuit includes a backlight power supply chip and an adjustable resistor circuit. The backlight power supply chip includes a set pin configured to set a reference current, an input pin, and an output pin. One end of the adjustable resistor circuit is connected to the set pin. The adjustable resistor circuit further includes a control end, where the control end is configured to receive a switching signal. Based on the switching signal, the adjustable resistor circuit selects a resistor branch from a first resistor branch and a second resistor branch to connect to the set pin for generating the reference current. The backlight power supply chip is configured to generate a drive current based on the reference current and a duty cycle of a pulse-width modulation (PWM) signal received by the input pin, and output the drive current by using the output pin.

Abstract: A backlight circuit includes a backlight power supply chip and an adjustable resistor circuit. The backlight power supply chip includes a set pin configured to set a reference current, an input pin, and an output pin. One end of the adjustable resistor circuit is connected to the set pin. The adjustable resistor circuit further includes a control end, where the control end is configured to receive a switching signal. Based on the switching signal, the adjustable resistor circuit selects a resistor branch from a first resistor branch and a second resistor branch to connect to the set pin for generating the reference current. The backlight power supply chip is configured to generate a drive current based on the reference current and a duty cycle of a pulse-width modulation (PWM) signal received by the input pin, and output the drive current by using the output pin.

Abstract: A user equipment includes a capacitance detection apparatus, a control unit, a microphone, and a prompt apparatus, where the capacitance detection apparatus includes a touch control unit and a capacitance detection unit. The touch control unit is configured to sense a capacitance change of a touch area in which the touch control unit is located, and the microphone is located in the touch area. The capacitance detection unit is electrically connected to the touch control unit, and the capacitance detection unit measures a capacitance value of the touch area according to the capacitance change sensed by the touch control unit, and sends the capacitance value to the control unit, and the control unit determines whether the capacitance value is greater than or equal to a first preset value, and if yes, determines that the microphone is blocked, and controls the prompt apparatus to send prompt information. In this way, a problem of microphone blocking is thoroughly resolved, making an ongoing voice call smoother.