41results about How to "Avoid hearing damage" patented technology

The invention discloses a control method and an apparatus for audio output, which belong to the field of signal processing. The method comprises: detecting whether a headphone is in the output state of audio; and if yes, identifying the present output environment of audio; adjusting the volume of the audio output according to the identified present output environment of audio, determining the output time of audio, and closing the audio output after the predetermined audio output time is achieved. The control apparatus comprises: a state detecting module, a control module, an environment identifying module, and a volume adjusting module. The invention adjusts the volume and determines the predetermined audio output time according to the identified present output environment of audio, and closes the audio output after the predetermined audio output time is achieved, thus the audio output can be effectively controlled, further the problem of hearing damage caused by long time receiving of audio output or high volume voice is solved.

The invention provides a drift fault recognition method of hot-rolling strip steel based on sound signals. The method comprises the following steps of: preprocessing a signal by combining the features of a hot-rolling production line and adopting a resampling and framing technology, carrying out feature extraction on the signal by adopting a Mel frequency cepstrum technology and carrying out feature selection and recognition by adopting a principal component analysis method and a multivariate statistic process T2 control diagram so as to realize the diagnosis of drift faults of the hot-rolling strip steel. The invention has the advantages that the drift phenomenon can be judged accurately and rapidly on line by utilizing an acoustic detection method, the roller replacement time can be reasonably arranged, the roller consumption can be effectively reduced, the production cost can be controlled, and the quality defect prevention capacity and the production operability of the product can be improved.

A modular silencer includes an outer tube and a plurality of chamber separators suspended through a tensile force within a bore of the outer tube and defining chambers between each pair of chamber separators in the silencer. An outer edge of the chamber separators is spaced apart from an inner surface of the tube to allow gas equalization between the chambers. A plurality of tube portions separate the chamber separators from each other and from the proximal and distal ends of the silencer assembly. The tube portions define a continuous center tube suspended in tension within the outer tube and through which the projectile travels. The tube portions have can have angled openings through which gas discharge exits into the chambers. Rotatable sleeves can be disposed over the tube portions to further disrupt gas flow and dissipate heat and sound. A carbon fiber sleeve can be disposed over the outer tube to inhibit burn injuries from contacting the silencer.

A hearing dose management device has an input, an output 6B for feeding an acoustic transducer, and an attenuating device configured to provide a controlled attenuation between the input and the output. The attenuation is dependent on past levels of the output so as to manage a hearing dose delivered by an acoustic transducer.

The invention relates to a terminal volume adjustment processing method and a terminal. The method comprises the steps of receiving an audio playing request, wherein the audio playing request is used for making a request for playing a target audio; obtaining first volume and second volume according to the audio playing request, wherein the first volume is the current set volume of the terminal, and the second volume is the corresponding volume when the terminal plays the audio; and if the first volume is greater than the second volume, playing the target audio through utilization of the second volume, and linearly adjusting the playing volume of the target audio from the second volume to the first volume according to preset adjustment speed. According to the method, the playing volume of the target audio is transited smoothly, the discomfort or hearing damage resulting from emergent relatively high volume is prevented from being provided for a user, and the use experience of the user for the terminal is greatly improved.

The invention relates to a pipe barrel and bottom valve assembling machine with a video monitoring function. The pipe barrel and bottom valve assembling machine with the video monitoring function comprises a machine frame, a bottom valve storage device arranged on the machine frame and used for storing and discharging a to-be-assembled bottom valve, a pipe barrel storage device used for storing and discharging a to-be-assembled pipe barrel, a pipe barrel conveying device connected with the pipe barrel storage device, an assembling center used for assembling the to-be-assembled bottom valve discharged by the bottom valve storage device and the to-be-assembled pipe barrel discharged by the pipe barrel conveying device and conducting a pressure maintaining test, and a finished product discharging station connected with the assembling center. The assembling center comprises a bottom valve installation assembly connected with the bottom valve storage device and an assembling assembly connected with the pipe barrel conveying device. The to-be-assembled bottom valve located on the bottom valve installation assembly and the to-be-assembled pipe barrel located on the assembling assembly areassembled together. The pipe barrel and bottom valve assembling machine with the video monitoring function is reasonable in design, compact in structure and convenient to use.

The invention discloses a method for adaptively adjusting sound volume of a player based on user distance. The method comprises the following steps of: firstly, establishing a volume level-distance interval corresponding relation table, and then calculating the distance between a mobile phone/intelligent wearable equipment and an intelligent sound box in real time by utilizing signal intensity during communication; secondly, recording initial volume set by the user at an initial position and initial distance between the user at the initial position and the intelligent sound box; and inputtingthe initial distance into the volume level-distance interval corresponding relation table to obtain a volume level corresponding to the initial position of the user. Through comparing the initial volume set by the user at the initial position with a corresponding volume level in the table, a correction coefficient is determined, and the volume level is amplified and corrected, so that the volume level-distance interval corresponding relation table is automatically adjusted according to the volume preference of the user, therefore, the volume of the intelligent sound box is adaptively adjustedaccording to the distance between the user and the intelligent sound box, and the user can hear the sound with the same volume within a certain range away from the intelligent sound box. The method issimple in operation, convenient to use, saves energy and is environmentally friendly.

The invention discloses a sparking plug paper sleeve forming machine provided with an elastic glue injection box bottom plate and a video monitoring camera. The sparking plug paper sleeve forming machine comprises a machine frame, a feeding mechanism, an edge gluing mechanism, a rounding and edge drying mechanism and the video monitoring camera. The feeding mechanism comprises a feeding rail plate and a feeding rail plate sliding driving air cylinder. The edge gluing mechanism is arranged on a gluing base plate above the feeding rail plate. The rounding and edge drying mechanism comprises a support plate, a rounding core mold, a rounding positioning pressing plate, an edge clamping top plate and two rounding force applying assemblies arranged on the left side and the right side of a rounding mold. A feeding hole is formed in the support plate and connected with the discharging end of the feeding mechanism. A hot air cavity is formed in the edge clamping top plate. A plurality of hot air holes communicated with the hot air cavity are formed in a top plate body of the edge clamping top plate. The support plate is further provided with an air heater connected with a pipeline of the hot air cavity. The sparking plug paper sleeve forming machine has the advantages of being reasonable in structural design, high in machining efficiency, and good in product forming consistency.

The invention discloses a tubular corrugated paper sleeve forming machine with an elastic glue injection box bottom plate and a monitoring camera. The tubular corrugated paper sleeve forming machine comprises a machine frame, a hole forming mechanism, a cutting mechanism, a feed mechanism, an edge glue-coating mechanism, a rounding and edge drying mechanism and the monitoring camera. The feed mechanism comprises a feed rail plate and a feed rail plate sliding driving air cylinder. The edge glue-coating mechanism is arranged on a glue-coating base plate above the feed rail plate. The rounding and edge drying mechanism comprises a support plate, a rounding core mold, a rounding locating pressing plate, a side-clamping top plate and two rounding force application assemblies arranged on the left side and the right side of a rounding mold. The support plate is provided with a feed hole, and the feed hole is connected to the discharge end of the feed mechanism. A hot air cavity is formed in the side-clamping top plate, a plurality of hot air holes communicated with the hot air cavity are formed in a top plate body of the side-clamping top plate, and the support plate is further provided with an air heater connected to the hot air cavity through a pipeline. The tubular corrugated paper sleeve forming machine has the advantages that the structural design is reasonable, the machining efficiency is high, and the forming uniformity of products is good.

The invention belongs to the field of biological medicine, discloses application of PRMT5 as a drug target in hearing protection, and particularly discloses application of a PRMT5 inhibitor in preparation of drugs for preventing and/or treating hearing injury. As a hearing protection component, the PRMT5 inhibitor can effectively prevent hearing injury or effectively treat hearing injury. The invention also discloses a drug or kit containing the PRMT5 inhibitor for hearing protection. The invention provides a new idea for prevention and treatment of hearing injury, thereby having a broad clinical application prospect.

The invention provides an intelligent music playing device based on a sensor, which comprises a sound box and a playing device, the sound box and the playing device are connected through an electric wire, the front wall of the sound box is slidably connected with a first clamping piece and a second clamping piece, and the front wall of the sound box is also fixedly connected with a supporting plate; the playing device comprises a box body, a player and a clamping mechanism, a music playing cavity communicated with the outside of the box body is formed in the side wall of the box body, a first motor and a sound sensor are embedded in the top of the music playing cavity, the player is fixedly connected to the lower end of a first power output shaft on the first motor, a sound insulation layer is arranged on the side wall of the music playing cavity, and the clamping mechanism is arranged at the bottom of the box body. The volume can be prevented from being too large suddenly, and the mobile phone can be supported and stably fixed at different places of a desktop.

The invention discloses an audio recommendation method, a terminal and a computer readable storage medium, and the method comprises the steps: obtaining a sound energy parameter of a historical playing audio of the terminal, and judging whether the sound energy of the historical playing audio is higher than a preset sound energy level or not according to the sound energy parameter of the historical playing audio. And if yes, the terminal determines a candidate sound energy parameter according to the sound energy parameter of the historical playing audio, and then determines a target audio andperforms audio recommendation. The sound energy of the candidate recommended audio corresponding to the candidate sound energy parameter is lower than the preset sound energy level; therefore, when the terminal determines that the sound energy level of the historical playing audio exceeds the preset sound energy level; some audios with low sound energy can be recommended to the user; the embodiment of the invention also provides a terminal and a computer readable storage medium, the terminal considers the influence of the audio energy on the hearing of the user while carrying out audio recommendation, the hearing of the user is protected, and the user experience is improved.