5results about How to "Avoid sound quality degradation" patented technology

The invention discloses a voiceprint recognition system attack resisting method and device, equipment and a medium, by constructing a shadow voice sample set and a substitution model, dependence on target speaker data and query capability is reduced, and privacy risk and query overhead are reduced; meanwhile, two types of substitution models are trained based on an information theory method, so that the mobility and stability of the models are improved, and the generalization ability is enhanced; besides, the attacker model adopts a specific architecture and combines an alternate training strategy, so that attack loss and prediction probability difference are optimized, imperceptibility and attack effectiveness are balanced, and tone quality reduction or attack failure is avoided; and finally, through systematic training and optimization, a more uniform evaluation caliber is expected to be provided, and more reliable guidance is provided for engineering landing and risk evaluation.

The present invention relates to a conference audio processing method and system based on voice intelligence, wherein the method is applied to a source end, the source end characterizing the terminal device where the speaker in the audio and video conference is located, and the method comprises: in the audio and video conference, obtaining the first network transmission quality of the source end itself and the second network transmission quality of each receiving end; determining the transmission mode for each receiving end based on the first network transmission quality, each second network transmission quality and the conference type of the audio and video conference; obtaining the audio data of the speaker, and determining the target data corresponding to each receiving end based on the audio data and the transmission mode of each receiving end, and for each receiving end, the target data characterizes the data obtained after the audio data is processed by the transmission mode of the receiving end; and sending the target data corresponding to each receiving terminal to the corresponding receiving end. The present application has the effect of improving the accuracy of audio data transmission in audio and video conferences under network disturbance conditions.

The invention relates to a high-safety Bluetooth headset charging box, through an innovative contact protection mechanism, an oxide layer on a metal contact is periodically and automatically removed, the charging stability is ensured, the service life of the metal contact is prolonged, the charging safety and stability are ensured, and an overheating protection system realizes active safety management; safety accidents caused by overheating are effectively prevented, the active protection mechanism reduces potential risks of battery overheating, fire and the like, the buffer cavity defined by the outer groove shell and the inner groove shell and the miniature air bag provide good shockproof protection, damage to the earphone by external impact is reduced, the earphone is protected, and the safety of the earphone is improved. The charging box is simple in structure and convenient to use, reduces potential safety hazards possibly caused by damage of earphones, can automatically clean dust on the surfaces of the earphones and at the headset, provides a heat dissipation function, improves operation convenience through an automatic pop-up mechanism, overcomes the defects of a traditional charging box in the aspects of safety, cleaning and convenience, and is suitable for popularization and application. And a high-quality product which is reliable for a long time and easy to use is provided for a user.

This invention discloses an audio enhancement system and method for underground broadcasting systems, relating to the field of audio enhancement technology. The system acquires noise signals and original audio signals from a mine roadway, processes them through standardization, encodes and transmits them, and then decodes them to obtain a standardized noise signal. The standardized noise signal undergoes frequency band amplitude shaping and time delay compensation, followed by a phase inversion operation to generate a reverse noise signal. Based on the original audio signal and a roadway sound reflection model, the reverberation component within the roadway is predicted. After phase inversion, a reverse reverberation signal is generated, and a reverberation gating coefficient is introduced for weighted control to obtain the actual reverse reverberation signal. The original audio signal, the reverse noise signal, and the actual reverse reverberation signal are then superimposed to obtain the final audio signal. Utilizing the principle of destructive interference, the system effectively reduces the impact of environmental noise and reverberation.

The utility model discloses a loudspeaker box with a detachable speaker mesh, which comprises a loudspeaker box body and the speaker mesh, the loudspeaker box body comprises a shell, the top end of the shell is fixedly provided with an installation cover, the speaker mesh is arranged in the installation cover, the outer side of the installation cover is provided with four clamping grooves in a circular array, and the clamping grooves are arranged in the shell. A clamping groove is formed in the mounting cover, a rubber plug is fixedly mounted on the side wall of the clamping groove and movably clamped in the clamping groove, a groove is formed in one side of the clamping groove, a fixing screw is spirally mounted at the bottom end of the clamping groove, and the loudspeaker mesh is fixedly connected with the mounting cover through the fixing screw. According to the utility model, through the arrangement of the rubber plug and the fixing screw, when dust on the speaker mesh needs to be cleaned, the rubber plug is pulled by a finger to open the rubber plug, the arrangement of the groove enables the finger to have a space in contact with the rubber plug, and then the fixing screw is unscrewed by a screwdriver, so that the speaker mesh can be taken out, and the reduction of tone quality caused by dust blockage is avoided.