Abstract: Methods, apparatus and systems for wireless communication nodes to discover each other are disclosed. In one embodiment, a method performed by a first wireless communication node is disclosed. The method comprises: transmitting, to each of a plurality of second wireless communication nodes, respective configuration information that is utilized by the second wireless communication node to transmit a discovery signal in order to be discovered by at least one other second wireless communication node. At least two of the plurality of second wireless communication nodes transmit their discovery signals at different time domain positions based on their respective configuration information.

Abstract: Disclosed in the present invention is a nonlinear optical crystal. The chemical formula of the nonlinear optical crystal is MHgGeSe4, M being selected from Ba or Sr. The nonlinear optical crystal has no symmetrical center, belongs to an orthorhombic crystal system, and has a space group Ama2. The nonlinear optical crystal is an infrared nonlinear optical crystal, and has the advantages of great nonlinear optical effect, wide light transmitting band, high hardness, good mechanical properties, breakage resistance, deliquescence resistance, easiness in processing and preserving, etc. Also disclosed in the present invention are a method for preparing the nonlinear optical crystal and application thereof.

Abstract: Provided is a method for encoding live-streaming data, including: acquiring first state information associated with a current data frame; generating backup state information by backing up the first state information; generating a first encoded data frame by encoding the current data frame based on a first bit rate and the first state information; generating reset state information by resetting the updated first state information based on the backup state information; generating a second encoded data frame by encoding the current data frame based on a second bit rate and the reset state information; and generating a first target data frame corresponding to the current data frame based on the first encoded data frame and the second encoded data frame.

Abstract: Embodiments of the application can provide a method, a device, and a terminal for controlling a jitter in network communication, belonging to the technical field of communication. The method includes: generating trigger information, where the trigger information is for triggering switching of a jitter control strategy for the network communication, the jitter control strategy includes a first control strategy based on a first cached data amount and a second control strategy based on a second cached data amount, and the first cached data amount is smaller than the second cached data amount; switching the jitter control strategy to a target control strategy in response to the trigger information; and controlling the jitter in the network communication by using the target control strategy, where the target control strategy is the first control strategy or the second control strategy corresponding to the trigger information.

Abstract: A method for processing live stream audio, and an electronic device and a storage medium are provided. The method is applied to a live streamer end, and includes: acquiring a first audio signal formed by mixing a guest audio signal with a background audio signal of the live streamer end; obtaining a second audio signal by performing echo cancellation on the guest audio signal in the first audio signal according to the guest audio signal; detecting a voice activity state of a guest end according to the guest audio signal, the first audio signal and the second audio signal; obtaining a third audio signal by performing echo cancellation on the first audio signal in a mixed audio signal according to the voice activity state and the first audio signal; synthesizing and pushing the second audio signal and the third audio signal to the guest end.

Abstract: Provided is a method for encoding live-streaming data, including: acquiring first state information associated with a current data frame; generating backup state information by backing up the first state information; generating a first encoded data frame by encoding the current data frame based on a first bit rate and the first state information; generating reset state information by resetting the updated first state information based on the backup state information; generating a second encoded data frame by encoding the current data frame based on a second bit rate and the reset state information; and generating a first target data frame corresponding to the current data frame based on the first encoded data frame and the second encoded data frame.

Abstract: Disclosed in the present invention is a nonlinear optical crystal. The chemical formula of the nonlinear optical crystal is MHgGeSe4, M being selected from Ba or Sr. The nonlinear optical crystal has no symmetrical center, belongs to an orthorhombic crystal system, and has a space group Ama2. The nonlinear optical crystal is an infrared nonlinear optical crystal, and has the advantages of great nonlinear optical effect, wide light transmitting band, high hardness, good mechanical properties, breakage resistance, deliquescence resistance, easiness in processing and preserving, etc. Also disclosed in the present invention are a method for preparing the nonlinear optical crystal and application thereof.

Abstract: Embodiments of the application can provide a method, a device, and a terminal for controlling a jitter in network communication, belonging to the technical field of communication. The method includes: generating trigger information, where the trigger information is for triggering switching of a jitter control strategy for the network communication, the jitter control strategy includes a first control strategy based on a first cached data amount and a second control strategy based on a second cached data amount, and the first cached data amount is smaller than the second cached data amount; switching the jitter control strategy to a target control strategy in response to the trigger information; and controlling the jitter in the network communication by using the target control strategy, where the target control strategy is the first control strategy or the second control strategy corresponding to the trigger information.