18results about How to "Improve playback quality" patented technology

The invention relates to a convenient accompaniment playing method and device based on original sound elimination, a medium and electronic equipment. The method comprises the following steps: carrying out original sound elimination processing on an original audio signal with original sound and accompaniment to obtain an accompaniment signal; according to mixing strategies corresponding to the number of output channels of the playing device, the obtained microphone human voice signals and accompaniment signals are mixed to obtain mixed signals, and the mixing opportunities and mixing modes of the microphone human voice signals and the accompaniment signals in the mixing strategies of different output channel numbers are different; according to the uplink delay duration, the downlink delay duration, the delay output time of the current output of a video picture signal in the original audio and video signal, the audio port output delay, a preset delay interval and the accessory driving delay duration of the last output of the current output, determining the accessory driving delay duration of the current output; and according to the accessory driving delay duration, after the mixed signal is played and output to the playing equipment, carrying out delayed output playing on the video picture signal.

The invention provides a video processing method and device, electronic equipment, a storage medium and a product. The method comprises the following steps: acquiring first brightness statistical information of a first video frame of a to-be-processed video; according to the first brightness statistical information, a brightness mapping function used for adjusting a next second video frame of the first video frame is determined, and the brightness mapping function is used for obtaining mapped output brightness for input brightness; and according to the brightness mapping function, performing brightness adjustment on each pixel point of the second video frame to obtain the second video frame after brightness adjustment so as to play the adjusted second video frame, so that the brightness mapping function can be dynamically generated according to the picture of the current video frame to adjust the brightness of the next video frame, and the adjustment accuracy is improved.

The invention discloses a streaming processing method and device under a weak network condition, and the method comprises the steps: obtaining an original video image frame of a video stream in a current data processing period, and obtaining a texture feature value and a motion change amplitude value of the original video image frame based on a GPU; based on a convolutional neural network, identifying the scene type of the original video image frame through the texture feature value and the motion change amplitude value; and when the current network condition of the video stream is in a weak network condition, adjusting an initial code rate corresponding to a scene type based on the scene type of the original video image frame, sending the adjusted code rate to a video editor, and encoding the video stream in the next data processing period. The texture feature value and the motion change amplitude value of the original video image frame are acquired based on the GPU, the scene type is identified by using the convolutional neural network, the code rate adjustment value is determined according to the scene type, and a precise basis is provided for subsequent code rate adjustment.

The invention relates to the technical field of Bluetooth sound boxes, in particular to a Bluetooth sound box synchronous playing method and system. The method comprises the following steps: performing master device election on a Bluetooth loudspeaker box group to obtain a loudspeaker box group master device identifier; carrying out distributed time synchronization network construction on the Bluetooth sound box group based on the sound box group main equipment identifier to obtain a sound box group time synchronization network; performing environment signal scanning on the Bluetooth sound box group to obtain environment frequency band signal data; performing dynamic frequency band allocation on the Bluetooth loudspeaker box group based on the environment frequency band signal data to obtain a loudspeaker box group frequency band allocation scheme; performing network performance parameter monitoring on the Bluetooth sound box group to obtain a sound box group network performance parameter set; and according to the sound box group network performance parameter set, performing audio buffer area determination on the Bluetooth sound box group to obtain an audio buffer area distribution scheme. According to the invention, the accuracy and stability of audio synchronization are improved, the user experience is optimized, and the application scene of the Bluetooth sound box is widened.

The utility model relates to the technical field of music playing devices, and provides a sports music playing device which comprises a music player body, a plurality of buttons are movably embedded in one side of the outer surface of the music player body, and a loudspeaker is fixedly connected to one side of the outer surface of the music player body. The outer surface of the music player body is provided with a charging port. According to the utility model, the rotating disc is rotated, the rotating disc drives the double-threaded rod to rotate forwards, the double-threaded rod drives the two moving plates to gradually move towards the inner side while rotating forwards, at the moment, the two moving plates are limited by the limiting columns to prevent the two moving plates from idling, the rotating disc is continuously rotated by a client, and the moving plates on the two sides continuously approach the earphone connector; the earphone connector is firmly clamped, so that the interface of the earphone connector is prevented from loosening, poor contact between the earphone connector and a player is prevented, and the music playing quality is improved.

The utility model relates to a vehicle-mounted Bluetooth connection system based on a USB interface, belonging to the technical field of vehicle-mounted Bluetooth connection, the vehicle-mounted Bluetooth connection system comprises an external vehicle-mounted Bluetooth module and a DPS audio processor, a control circuit is integrated in the external vehicle-mounted Bluetooth module and is used for directly processing and transmitting an external vehicle-mounted sound source, and the external vehicle-mounted Bluetooth module is connected with the DPS audio processor. The external vehicle-mounted Bluetooth module is provided with a USB interface, and the USB interface is used for being in butt joint with the DPS audio processor, so that audio data transmission is conducted between the external vehicle-mounted Bluetooth module and the DPS audio processor. According to the vehicle-mounted Bluetooth connection system based on the USB interface, digital audio of a peripheral sound source can be directly transmitted in a lossless mode, DSP digital signal audio input can be connected in a lossless mode, high speed is achieved, the communication rate is greatly improved, and the vehicle-mounted Bluetooth connection system is suitable for popularization and application. And seamless connection and lossless transmission between digital signal processing of the USB peripheral interface equipment and an input sound source of an original vehicle host are realized.

This invention relates to the field of smart terminal technology and discloses a display device and a display control method. The display device includes a display and a controller configured to: when playing first media data with first media data parameters in a first projection window of a projection interface, in response to a second operation command for playing second media data in a second projection window, acquire second media data parameters of the second media data; if it is determined that the second media data does not meet the projection conditions, stop receiving the first media data and control the display to play the second media data in the second projection window; if it is determined that the second media data meets the projection conditions, control the display to continue playing the first media data in the first projection window and play the second media data in the second projection window. Applying this solution can improve the user's projection experience.

The application provides a video ABR method, device and system based on 5G mobile information opening, the method comprising: receiving a current ABR decision generated by a client of a mobile 5G network service for requesting to reduce the code rate of a next video segment based on MEC, and querying the current mobile network switching information and the instant video buffer length of the client; judging whether the current ABR decision is a misjudgment decision suitable for video playback quality optimization based on the mobile network switching information and the instant video buffer length, if yes, rejecting to execute the misjudgment decision and transmitting the next video segment to the client at the current video segment code rate corresponding to the client. The application can realize the optimization of video playback quality based on 5G mobile switching perception, effectively improve the video playback code rate of the user, and reduce the video picture code rate jitter rate and picture freezing rate, thereby effectively improving the quality of experience QoE of the user playing the video in a mobile scenario.

The present invention provides a method and device for monitoring abnormal playback of online courses based on digitization. The method comprises the following steps: retrieving courseware data and updating it to a courseware area in a preset interface, obtaining position data of an update point corresponding to a target person in course acquisition data, and updating a character model corresponding to the target person to the preset interface based on the position data; analyzing the position of a focus pixel value corresponding to the target person in the course acquisition data to determine an explanation paragraph, and highlighting and displaying the explanation paragraph in the courseware data based on a preset mark; responding to frame selection display information of a teacher end, analyzing the movement trajectory of a focus pixel value corresponding to the target person in the course acquisition data to determine an explanation segment in the courseware data, and highlighting and displaying the explanation segment in the courseware data based on a preset mark; obtaining an abnormal playback rate based on a network connection rate of each student end and a preset regular rate, optimizing the update point based on the abnormal playback rate and a point optimization strategy, and generating an optimized display interface to send to the student end.

The utility model discloses a soft package battery and an earphone. The soft package battery is applied to the earphone and comprises a battery shell, a battery cell and a flexible circuit board, the battery cell is arranged in the battery shell and comprises a positive plate and a negative plate; the flexible circuit board comprises a demagnetizing part, a first connecting part and a second connecting part, and the demagnetizing part is connected between the first connecting part and the second connecting part; wherein the first connecting part is electrically connected to the negative plate; the battery shell comprises a first power supply end and a second power supply end, the positive plate is electrically connected to the first power supply end, and the second connecting part is connected to the second power supply end; wherein the first power supply end and the second power supply end are used for supplying power to the earphone. The soft package battery provided by the utility model can reduce the bottom noise generated by the magnetic field of the soft package battery, thereby improving the playing quality of the earphone.

The invention provides a dual-channel polling playing method and a dual-channel polling playing system. The dual-channel polling playing method comprises the following steps: acquiring various types of network signal data in distributed equipment; preprocessing and classifying the acquired network signal data by using a target detection model; transmitting the classified data to a central node through two independent data transmission channels according to the real-time requirement and the data volume of the network signal data; inputting the data of the central node into a polling control module, controlling transmission data in a channel according to a polling strategy, and carrying out fault exception processing; and sending the processed data to a playing device for playing. The key of the invention lies in the design of a dual-channel architecture and a polling control module, and aims to improve the efficiency and reliability of a distributed system in processing a large number of network signals.

This invention discloses an IP broadcast audio processing method and system for a converged broadcast system, belonging to the field of IP broadcast technology. The method includes audio preprocessing and encoding, dynamically adjusting three sampling rates (16000Hz / 32000Hz / 48000Hz) using a three-dimensional decision model combining broadcast type, terminal computing power, and scene noise; audio interleaving and FEC redundancy generation; multi-terminal clock synchronization using the chrony NTP service combined with smoothing correction and drift suppression; packet loss detection and hierarchical compensation using a four-layer protection mechanism: interleaving for burst response, FEC priority error correction, unicast continuation, and local hierarchical compensation; audio noise reduction and synchronized playback; and iterative optimization and collaborative management. This invention enables seamless integration and unified management of four major broadcast types, solving problems such as poor coordination among multiple broadcast types, low synchronization accuracy, poor packet loss compensation, and insufficient noise reduction and terminal adaptability, significantly improving the playback quality and emergency response efficiency of the converged broadcast system.

The utility model relates to the technical field of passenger vehicles, in particular to an intelligent connection domain controller and a vehicle, and the intelligent connection domain controller comprises a circuit board, a radio chip, a shielding cover, an elastic part and a first shell; the radio chip is arranged on the surface of the circuit board, and the shielding cover is connected with the circuit board and covers the radio chip; the side, back to the circuit board, of the shielding case is provided with the elastic piece, and the elastic piece is pressed between the shielding case and the first shell. According to the intelligent connection domain controller and the vehicle, the problems of noise, sound interruption and unsmooth playing in the playing process due to the fact that a shielding structure of a radio on an existing intelligent connection domain controller is poor and playing signals are easy to interfere are solved.

The present application discloses an audio system, which includes an audio generating part and an audio playing part, wherein the audio generating part and the audio playing part are communicatively connected; the audio generating part includes an audio generating mainboard, a first area on the surface of the audio generating mainboard is provided with a digital ground, a second area on the surface of the audio generating mainboard is provided with a first analog ground, and the digital ground and the first analog ground are connected at a target position through a first signal line, wherein the target position is the position where the digital-to-analog conversion component on the audio generating mainboard is located; the audio generating mainboard also includes an audio generating circuit for generating an audio signal; the audio playing part includes an amplifier mainboard and a speaker, the amplifier mainboard includes an amplifier chip, and the amplifier chip is used to amplify the power of the audio signal generated by the audio generating circuit; the speaker is used to play the audio signal after power amplification. In this way, the background noise can be reduced and the audio playing quality can be improved.

The embodiment of the invention discloses a video playing method, apparatus and device, and a readable storage medium. An electronic device determines a spatial position of a target role for sounding in a video frame relative to a reference point. Afterwards, a dialogue signal corresponding to the video is determined, after the dialogue signal is sent by the target role, the dialogue signal is rendered according to the spatial position of the target role relative to the reference point so as to obtain multiple paths of voice signals, and the path number of the multiple paths of voice signals is the same as the first number of loudspeakers of the electronic equipment. And finally, the electronic equipment synchronously plays the video frames and the multiple paths of voice signals. By adopting the scheme, the electronic equipment renders the dialogue signal according to the spatial position of the target role in the video frame, so that the spatial position of the target role is consistent with the sound image position of the dialogue signal, and the presence of a user is enhanced while the video playing quality is improved.

The embodiment of the invention provides an audio signal processing method, apparatus and device, and a readable storage medium. An electronic device obtains a to-be-played dual-channel stereophonic sound. And then, the electronic equipment determines playing signals of the sound equipment of each sound channel in the multi-channel surround sound system according to the spatial position of the sound equipment of each sound channel in the multi-channel surround sound system relative to the target position and the dual-channel stereophonic sound. By adopting the scheme, when the electronic equipment determines the playing signal of the sound equipment of each sound channel of the multi-channel surround sound system, the playing signals of the sound equipment of each sound channel are different by combining the spatial position of the sound equipment of each sound channel relative to the target position, the dual-channel stereo and the like, and due to the consideration of the spatial position of each sound equipment, the playing signal of the sound equipment of each sound channel is more accurate. Therefore, the position of the sound image can be corrected, the sound image offset caused by an asymmetric sound deployment mode is eliminated, and the purpose of improving the playing quality of the multichannel surround sound system to the dual-channel stereophonic sound is achieved.

The present disclosure relates to a video playback method, device, electronic device and storage medium, the method comprising: displaying a first-perspective picture of the current video on a preset page; displaying a second-perspective picture of the current video on a preset page in response to a perspective adjustment instruction triggered by a posture adjustment of a mobile device; the second-perspective picture is generated based on the correspondence between the device posture and the playback perspective; the correspondence between the device posture and the playback perspective represents the correspondence between the posture information of the mobile device and the playback perspective of the current video. The embodiment of the present application can adjust the viewing angle of the current video by adjusting the posture of the mobile device without performing gesture operations on the mobile phone screen, which can not only achieve conflict-free coexistence with the general gestures of some existing players, but also can achieve switching without screen occlusion when switching perspectives because there is no need to perform operations on the screen, thereby improving the quality of video playback.

The invention provides an intelligent sound system and method, and the method comprises the steps: determining a plurality of sound diffusivity based on the sensing parameters of a sensor in a sound and all propagation distances, and determining a sound focus point according to all sound diffusivity; determining the lag adjustment amount of the reflected sound in each direction through the sound focus point and the dead zone range of the sound equipment, and determining the sound diffusion range according to all the lag adjustment amounts; determining the sound pressure level distribution of the sound equipment in the closed site through the environmental noise and all the propagation distances; according to the method, the compensation amount of sensor hysteresis when the sound equipment plays sound in the closed field is determined through the sound diffusion range and the sound pressure level distribution, and when the sound equipment carries out sound transmission in all directions, self-adaptive hysteresis compensation is carried out on the sensor in the sound equipment through the compensation amount. According to the scheme, the influence of hysteresis of the sensor in the sound box on intelligent regulation and control of the sound box can be weakened, so that the playing quality of the sound box in a closed site is improved.