Abstract: Embodiments of the disclosure disclose a method for signal detection, an electronic device, and a storage medium. The method includes: receiving a Bluetooth signal, obtaining a signal quality by performing signal detection on a preamble portion of the Bluetooth signal, and terminating signal detection on sync word portion or an access address portion of the Bluetooth signal on condition that the signal quality is not greater than a quality threshold.

Abstract: An audio output device, a method for eliminating sound leakage, and a storage medium are provided in the disclosure. The audio output device includes a processor, a first speaker, and a second speaker. The processor is configured to generate a second audio file based on a first audio file and a parameter adjustment value. The processor is configured to control the first speaker to play the first audio file to generate a first audio and synchronously control the second speaker to play the second audio file to generate a second audio. The first audio is transmitted to an ear of a user for the user to listen, and the second audio is used to eliminate an audio leaked to an outside of the audio output device during transmission of the first audio to the ear of the user.

Abstract: An interference detection method and apparatus, a storage medium, and a terminal are provided. The method includes: receiving a signal; obtaining a power value of the signal as a first power; filtering the signal to obtain a filtered signal; obtaining a power value of the filtered signal as a second power; and determining whether a frequency channel where the signal is located is an interference frequency channel or a non-interference frequency channel based on a comparison result of a ratio of the first power to the second power and a preset threshold.

Abstract: Embodiments of the present disclosure provide a signal transmitting method. According to the method, in a signal transmitting process, before entering a digital to analog converter (DAC), a first frequency modulated signal of a high-pass channel is first subjected to nonlinear compensation and gain mismatch compensation. In the process, a nonlinear compensation coefficient and a gain mismatch compensation coefficient are determined according to an output voltage of the high-pass channel and an output frequency of a voltage-controlled oscillator (VCO) during a calibration stage.

Abstract: A method and an apparatus for carrier frequency-offset determination and a storage medium are provided. The method includes the following. A first carrier initial frequency-offset is obtained according to a pilot time interval and a pilot phase difference of a first carrier. A second carrier frequency-offset is obtained according to a carrier frequency-ratio of a second carrier to the first carrier and the first carrier initial frequency-offset. A first carrier frequency-offset is obtained according to the first carrier initial frequency-offset.

Abstract: A communication method, a communication device, and a readable storage medium, wherein the communication method includes: establishing a communication connection with a data source device; establishing a second wired connection with at least one other device; and exchanging identification information with the at least one other device through the second wired connection, thereby the at least one other device receiving communication data sent from the data source device according to the received identification information. With the above method, multi-device communication is performed quickly and reliably.

Abstract: An interference detection method and apparatus, a storage medium, and a terminal are provided. The method includes: receiving a signal; obtaining a power value of the signal as a first power; filtering the signal to obtain a filtered signal; obtaining a power value of the filtered signal as a second power; and determining whether a frequency channel where the signal is located is an interference frequency channel or a non-interference frequency channel based on a comparison result of a ratio of the first power to the second power and a preset threshold.

Abstract: An active noise reduction system and method, and a storage medium are provided. In the system, a first signal acquisition circuitry acquires an external noise signal at a noise cancellation spot, and transmits the acquired external noise signal to a noise control system including a first frequency nonlinear transformation circuitry, a first filter circuitry and an inverter. The first frequency nonlinear transformation circuitry receives the external noise signal, and expands at least one target frequency band of the external noise signal based on a frequency nonlinear transformation mapping function to generate a first transformed external noise signal, the first filter circuitry filters the first transformed external noise signal to generate a filtered external noise signal, and the inverter performs inversion on the filtered external noise signal to generate a noise cancellation signal; and the signal output circuitry receives and outputs the noise cancellation signal to cancel an actual noise.

Abstract: A method and an apparatus for Bluetooth connection are disclosed. A first Bluetooth connection can be established between a first node of multiple data receiving nodes and a data source, the multiple data receiving nodes can share a data packet transmitted by the data source via the first Bluetooth connection, and a second node can be selected according to a preset rule from among the multiple data receiving nodes to feed back a response signal to the data source. In a method and an apparatus, the multiple data receiving nodes can be regarded as a whole, which share a data packet transmitted from the data source and jointly maintain the first Bluetooth connection, and only one of the multiple data receiving nodes is selected to feed back a response signal. Conforming to Bluetooth communication protocols, a method and an apparatus can meet the demanding requirements on hardware resources of a Bluetooth connection among a data source and multiple data receiving nodes.

Abstract: A Bluetooth communication method and device, and storage medium and terminal are provided. The method includes: generating a frame to be transmitted, wherein the frame to be transmitted comprises at least a Preamble, an Access Code, a Header, an Enhanced Data Rate Payload and a Trailer, wherein a configuration mode of the Preamble is consistent with a configuration mode of a Preamble in an LE frame, a configuration mode of the Header, the Enhanced Data Rate Payload and the Trailer are consistent with configuration modes of corresponding parts in an EDR frame, a configuration mode of the Access Code is consistent with a configuration mode of an Access Code in the LE frame and a configuration mode of an Access Code in the EDR frame; and generating and transmitting the frame to be transmitted by a modulation mode of the EDR frame and a Symbol Rate of the LE frame.

Abstract: An active noise reduction system and method, and a storage medium are provided. In the system, a first signal acquisition circuitry acquires an external noise signal at a noise cancellation spot, and transmits the acquired external noise signal to a noise control system including a first frequency nonlinear transformation circuitry, a first filter circuitry and an inverter. The first frequency nonlinear transformation circuitry receives the external noise signal, and expands at least one target frequency band of the external noise signal based on a frequency nonlinear transformation mapping function to generate a first transformed external noise signal, the first filter circuitry filters the first transformed external noise signal to generate a filtered external noise signal, and the inverter performs inversion on the filtered external noise signal to generate a noise cancellation signal; and the signal output circuitry receives and outputs the noise cancellation signal to cancel an actual noise.

Abstract: A communication method, a communication device, and a readable storage medium, wherein the communication method includes: establishing a communication connection with a data source device; establishing a second wired connection with at least one other device; and exchanging identification information with the at least one other device through the second wired connection, thereby the at least one other device receiving communication data sent from the data source device according to the received identification information. With the above method, multi-device communication is performed quickly and reliably.