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227results about How to "Good masking effect" patented technology

Target voice privacy protection method and system

The invention relates to a target voice privacy protection method and a target voice privacy protection system. The method comprises the following steps of: generating an interference voice signal based on a target voice signal, and combining the existing interference signals in an interference repository to synthesize composite interference sound, wherein the target sound and the composite interference sound are played by loudspeaker systems at different positions in a room. In the system, the interference voice signal is generated on the basis of the target voice signal, and the existing interference signals in the interference repository are combined to synthesize the composite interference sound, wherein the target sound and the composite interference sound are played by the loudspeaker systems at different positions in the room. The interference sound is a composite interference signal comprising a target voice signal-related part, wherein the related part is generated by processing the target voice signal, and the interference sound has the advantages of high interference efficiency and low annoyance. In addition, the interference sound and the target sound are played by the loudspeaker systems at different positions in the room, a sound signal is picked from interference voice recording equipment, and normal operation of a conference is not influenced basically.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI

Flexible screen and foldable equipment

The invention provides a flexible screen and foldable equipment, relates to the technical field of electronic equipment, and aims to solve the technical problem of poor folding effect of the flexible screen. The flexible screen provided by the invention comprises a flexible display panel and a bearing plate, and the flexible display panel is provided with a back face and a display face used for displaying images. The bearing plate is arranged on the back face of the flexible display panel and used for providing a certain supporting effect on the flexible display panel. The bearing plate is provided with a first fixing part, a first bending part, a first connecting part, a main bending part, a second connecting part, a second bending part and a second fixing part which are sequentially arranged in the first direction, and the first direction is parallel to the plate surface of the bearing plate; after the flexible screen is folded, the main bending part can be bent towards the folding direction, and the first bending part and the second bending part can be bent away from the folding direction, so that the folding form of the flexible screen can be effectively controlled; and according to the flexible screen provided by the embodiment of the invention, the folding state can be effectively controlled, so that the folding effect is improved.
Owner:HUAWEI TECH CO LTD

Modified spinel lithium manganate for secondary lithium ion battery and preparation method thereof

The invention is modification of spinel lithium manganate for secondary lithium ion batteries and its preparation method, and is characterized in that the spinel lithium manganate is orderly coated with a silica film and an outer carbon film, which forms a composite material with a spinel lithium manganate-silica-carbon three-layer core-shell structure. The coating is performed by a sol-gel method and a solid phase coating method respectively. The composite material with the three-layer core-shell structure has excellent rate capability, and has a 5C / 0.2C discharge capacity ratio of up to 86%. The normal-temperature and high-temperature cycle performance are greatly improved; the capacity retention rate for 100 cycles of normal-temperature 1C is up to 98%; the capacity retention rate for 100 cycles of 55 DEG C 1C is up to 94%, such as a modified spinel lithium manganate material coated with Li1.04Al0.05Mn1.95O4 body-5 wt% silica coating-5 wt% carbon coating. The problems of unstable cycle performance and poor rate capability of the spinel lithium manganate for secondary lithium ion batteries are effectively solved. The preparation method of the invention is simple and practical, low in cost, and is applicable to large-scale production.
Owner:WUXI LITAI ENERGY TECH

Composite brightness enhancement film and preparation method thereof

The invention relates to a film for optics, and especially relates to a composite brightness enhancement film and a preparation method thereof to solve the problem that a conventional brightness enhancement film can only gather light in a single direction. The composite brightness enhancement film comprises a first brightness enhancement layer and a second brightness enhancement layer. The first brightness enhancement layer comprises a first substrate, a first microstructure layer and a first back coating layer, wherein the first microstructure layer is arranged on the first substrate, and the first back coating layer is arranged under the first substrate. The second brightness enhancement layer comprises a second substrate, a second microstructure layer and a second back coating layer, wherein the second microstructure layer is arranged on the second substrate, and the second back coating layer is arranged under the second substrate. The first back coating layer is adhered to the second microstructure layer, so that the first brightness enhancement layer and the second brightness enhancement layer are compounded together. The composite brightness enhancement film exhibits a good brightness enhancement effect and a good shielding effect, and exhibits great peeling intensity and rigidness.
Owner:NINGBO CHANGYANG TECH

Double-station laser cutting workbench

InactiveCN106392345APossess self-displacement repair abilityGuaranteed flexibility and agilityLaser beam welding apparatusEngineeringLaser cutting
The invention discloses a double-station laser cutting workbench comprising a base, a working platform, a locating mechanism, a driving cylinder and a safety door mechanism; the bottom of one end of the working platform is fixedly provided with at least two slide blocks, the bottom of the other end of the working platform is provided with a V-shaped guide wheel, and a linear guide rail and a V-shaped guide rail are respectively fixed at two ends of the upper surface of the base; a central mounting seat is fixed at the outer side of the end, provided with the slide block, of the working platform, and the middle part of the driving cylinder is mounted in the central mounting seat; the locating mechanism further comprises a locating cylinder and a locating plate, and the front end of the working platform is fixedly provided with at least two regulating seats arranged in parallel; and the safety door mechanism further comprises an overhead door, a connecting stack and a lift cylinder, two ends of the working platform are provided with shielding plates connected with a safety door, and a viewing window is formed in the overhead door. According to the double-station laser cutting workbench, a way that the linear guide rail and the V-shaped guide rail are combined is adopted, and a power cylinder of the double-station laser cutting workbench adopts a way of connecting the center of the central mounting seat, so that the working platform has the self-compensation repair capacity in the reciprocating motion process, and the clamping phenomenon is avoided.
Owner:SUZHOU LEAD LASER TECH
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