182results about How to "Hearing protection" patented technology

An ear terminal includes a sealing section arranged for use in the ear meatus of a human, with an inner microphone having a sound inlet for being directed into the meatus and an electronic unit including filtering elements coupled to the inner microphone for filtering the signal from the inner microphone, the filtering elements being programmable to transform the signals based on the sounds received in the ear by the inner microphone into sounds having essentially the characteristics of spoken sounds of the wearer of the ear terminal.

Ear protecting device with a sealing section for acoustically sealing the meatus of a human, includes a sound generator with a sound outlet for being directed toward the user meatus; an inner microphone with a sound inlet from the meatus, arranged for measuring the resulting sound field in the meatus; connected to an electronics unit including a sound analyser coupled to the inner microphone, for analyzing sound characteristics of the resulting sound field in the meatus, producing analyzed sound characteristics; storing part in the electronics unit for storing measured predetermined sound characteristics of a properly functioning ear protecting device; a comparing part in the electronics unit for comparing the inner microphone analyzed sound characteristics with the stored measured predetermined sound characteristics; indicating part coupled to the comparing part for being activated if the analyzed sound characteristics differ significantly from the predetermined sound characteristics.

The invention provides a volume adjusting method comprising the following steps of: A. determining the set difference value of the volume of an audio signal output by an audio playing device and the detected volume of environmental background noise during setting; B. detecting the volume of the current environmental background noise and the frequency of the audio signal; C. adjusting the current volume of the audio playing device for outputting the audio signal according to the summation of the detected volume of the current environmental background noise and the set difference value ; D. determining each grain value for adjusting each frequency of the audio signal when the adjusted volume is judged to exceed the preset volume range; and E. adjusting the frequency of the audio frequency playing device for outputting the audio signal according to the determined grain value. The algorithm is simpler and can be used for adjusting the volume more quickly. The invention also provides a volume adjusting device, which can be used for adjusting the volume more quickly.

The invention discloses mobile communication equipment and a volume control method thereof. The mobile communication equipment comprises a volume setting module, a volume control module and an earphone management module, wherein the volume setting module is connected with the volume control module and is used for setting the volume of different audio types in an earphone mode to be a first group of volume, and setting the volume of different audio types in a non-earphone mode to be a second group of volume; the earphone management module is connected with the volume control module and is used for detecting the earphone mode or the non-earphone mode; the volume control module is used for setting the volume of an application program to be the first group of volume in the earphone mode when the earphone mode is detected, and setting the volume of the application program to be the second group of volume in the non-earphone mode when the non-earphone mode is detected. By adopting the method, an optimum sound effect can be realized under different situations when an earphone is used or a loudspeaker is used, and hearing can be protected.

The present invention discloses an automatic adjusting method for output volume of media player. The method comprises the following steps: 1) the output volume control module of the media player is opened; 2) the default valve of the standard output volume is set and saved; 3) the output volume control module measures the actual primary volume output value of the multimedia file; adjusts the output value to the default value and then output the default value; 4) the output volume of the player is adjusted based on the actual output volume. With the technical proposal, the output volume is constant by utilizing the media player no matter the frequency of the primary media file is recorded in whatever volume; the output of the frequency is more humanization and more adapt to the habit of consumer. The output volume remains constant under the unstable frequency output condition of the primary media file to increase the sound experience, so as to protect the audition of the consumers and to prevent the earphone from being damaged in time.

The provided protection method for people ears comprises: monitoring the transient pressure of sound signal from earphone and the sum pressure in a period, comparing the sum with a safe threshold stored in a master controller, and feeding result back to the master controller. This invention is simple and low cost, and can provide well protection effect on ears.

The invention discloses a headset communication method under a strong-noise environment and a headset. The method comprises: using earplugs to reduce medium and high frequency noises entering an ear canal, using an external connection cavity in parallel connection with the ear canal to divert medium and low frequency noises; using an internal microphone to pick up the sound in the ear canal and an environmental noise signal entering the ear canal, using an external microphone to pick up the environmental noise signal, and taking the external microphone signal as reference signals to eliminate the noise element in the internal microphone signal and remain the voice element to obtain transmitting terminal signals of the headset; using sound dynamic compression technology to cut down and compensate the signals picked up by the external microphone in terms of sound pressure level such that the sound pressure range is compressed to a range acceptable by human ears and the signals picked up by the external microphone and the receiving terminal signal received by the headset are broadcast together through a receiver of the headset. By means of the technical scheme of the present invention, the functions of protecting hearing, enhancing voice and monitoring a three-dimensional environment can be achieved comprehensively under strong-noise environments.

The invention provides a caller forwarding device of mobile phone based on bluetooth and comprises a bluetooth communication module, a caller management module and a fixed telephone terminal interface which are successively connected to form a caller diverting line. The bluetooth communication module is used for communicating with the mobile phone. When the mobile phone receives a caller data, the bluetooth communication module forwards the caller data to the caller management module. The fixed telephone terminal interface is used for connecting the fixed telephone terminal. The caller management module is used for extracting caller information from the original caller data, forwards the caller information to the fixed telephone terminal and provides ringing signals to the fixed telephone terminal. After the fixed telephone terminal is got through, the caller management module receives a communication signal from the bluetooth communication module and forwards the communication signal to the fixed telephone terminal. The caller forwarding device of mobile phone can be used for conveniently transferring a mobile phone to a fixed telephone and the mobile phone does not need bringing along with people, thus protecting the auditory acuity of users.

The invention relates to a system for automatically interacting the voice media display terminal and the user, and a relative method, wherein it comprises an automatic sensor which can sense the sensor and its displacement, a user position parameter calculator for calculating the distance between human position and the voice media player, and a voice media play controller for controlling the voice media player and adjusting its volume. The invention can realize the interaction via automatically sensing the position of user and adjusting the play terminal.

The invention discloses an automatic volume control device for a communication receiving terminal of a mobile telephone, comprising a watch receiver and an ambient noise collecting module, a volume control stopwatch module and a watch receiver automatic volume control module which are used for regulating the volume, wherein, the ambient noise collecting module is used for inputting the collected ambient noise decibels into the volume control stopwatch module; the volume control stopwatch module is used for finding out the output volume amplified gain value corresponding to the input ambient noise decibels in a stopwatch, therefore, the watch receiver automatic volume control module can automatically regulate the mobile telephone receiving terminal volume to the watch receiver according to the amplified gain value.

An ultra thin ear plug enables sound protection to be conveniently carried inside a wallet. The ear plug is made of a slow-recovery thin foam strip. The user rolls the strip into a cylinder, compresses the cylinder and inserts the compressed foam cylinder into the ear canal. The foam strip can incorporate a pressure sensitive adhesive on one surface so that the ear plug retains the cylindrical shape after being rolled up. Tapered ends can assist sealing by minimizing the existence of an air gap at the center of the cylinder and on the ear canal. A flexible envelope about 0.008 inch thick and of credit card dimensions can provide packaging for two or more ear plugs and can provide a large surface area for promotional advertising. Total thickness of the packaged ear plugs can be thinner than 0.050 inch or the thickness of a credit card.

The invention discloses an audio / video output control method and equipment, belonging to the field of signal processing. The method comprises the following steps of: when audio / video output exists, beginning to timing; when the timing reaches a first time interval, reducing the volume of the audio / video output according to a first volume adjustment unit; and judging whether the volume of the audio / video output is less than or equal to a closed value, and closing the audio / video output if the volume of the audio / video output is less than or equal to the closed value. The equipment comprises a timing module, a volume adjusting module, a first judging module and a stop module. According to the invention, when the timing reaches the first time interval, the volume of the audio / video output is automatically reduced according to the first volume adjustment unit, and when the final volume is less than or equal to the closed value, the audio / video output is automatically closed, therefore the effects of reducing unnecessary electric quantity consumption, protecting hearing of users and improving user experience are achieved.

The invention relates to a noise reduction system used for reducing noise generated by a medical imaging device in a scanning room. The noise reduction system emits a noise reduction signal corresponding to a noise signal to a target region according to the detected noise signal in order to reduce or eliminate noise generated by the medical imaging device in the target region. The noise reductionsystem carries out noise reduction on noise in the target region in real time, i.e., carries out directional noise reduction on noise in the scanning room, noise reduction is targeted and easy to implement, the noise reduction effect is relatively good, and the personnel noise protection effect is relatively good.

The invention discloses a volume self-adaption control method and a volume self-adaption control system. The volume self-adaption control method includes that when a user performs volume adjustment on home entertainment equipment, volume data of a mobile feedback terminal in a current location are acquired through the mobile feedback terminal, and a home entertainment management center learns the acquired volume data to acquire the best volume at different periods and stores the best volume in a data storage module; when the user switches on the home entertainment equipment or switches information sources, the home entertainment management center control the mobile feedback terminal to acquire the volume data in the current location and acquire the best volume at the current period from the data storage module; the volume of the home entertainment equipment is adjusted to enable the acquired volume data to reach the best volume at the current period.

The method includes steps: receiving digital sound signal from a source of sound signal; sampling the digital sound signal to obtain multiple amplitude values; calculating an acoustic energy value within a prearranged time period by using multiple amplitude values as a parameter; when the acoustic energy value reaches to a prearranged energy value, generating a hearing protection signal; automatic adjusting downwards current gain value or generating visual or aural caution signal in order to respond the hearing protection signal. The invention also discloses hearing protection system, and sound output device. When acoustic energy value reaches to the value user can endure, the protection system adjusts downwards the current gain value or generates visual or aural caution signal automatically in order to protect hearing ability of user.

Device for protecting the hearing from loud MRT soundsDevice for protecting the hearing from loud MRT sounds, with a protective sound generating device linked to the MRT electronics for generating a protective sound rising slowly in amplitude, increasing the impedance in the middle ear immediately before the onset of the loud MRT sound.

The invention discloses a loudspeaker, which comprises a shell assembly, a diaphragm assembly and an upper cover. The upper cover is arranged above the diaphragm assembly; the upper cover and the diaphragm assembly are fixedly arranged inside an upper edge step of the shell; and the shell assembly comprises an upper edge step of the shell, a magnet yoke, a magnet, a magnetic conducting plate and an elastic structure which connects the upper edge step of the shell and the magnet yoke into a whole, wherein the magnet yoke has a groove structure; the magnet is arranged inside the groove; and the magnetic conducting plate is arranged above the magnet. The diaphragm assembly comprises an elastic sheet, a vibrating diaphragm and a coil, wherein the vibrating diaphragm is connected with an annular structure of the elastic sheet; and the coil is arranged at a curved surface junction of the vibrating diaphragm and is arranged inside the magnet yoke. Due to the arrangement of the elastic structure, the loudspeaker has the bone conduction characteristic, fulfills the aims of protecting the hearing of a user and producing perfect sound, and also has the advantages of simple and convenient manufacturing technology, high compatibility with conventional products, and easy replacement.

The invention provides a noise eliminating method based on intelligent home furnishing and a system thereof. The method comprises the following steps: (1) collecting all audio information in a residential environment, (2) classifying the collected audio information according to the frequency and displaying the information to a user, (3) receiving a shielding command of the user and setting a type selected by the user as audio needed to be shielded, and (4) generating an audio signal whose phase is opposite to that of the audio which is needed to be shielded and playing the audio signal to neutralize environmental noise. According to the method and the system, a user selection function is added on the basis of active noise reduction, thus the shielding of natural sound and alarm sound can be prevented, and the healthy life of people can be ensured to a certain extent.

The invention relates to an SDI digital switching system with functions of video effect switch and mute switch. The system comprises a main board, a back board and a control panel. An FPGA processing and image storage unit of the main board adopts a high-speed image storage chip and a high-speed large-capacity FGPA chip so that the switching system has the frame synchronizing function and ensures the stability of signals during effect switch; and video signals are subjected to effect switch and mute switch of various formats such as fade-in fade-out and the like, the prior direct switching mode is improved, the impact brought by images and sound before and after switching the signals is effectively avoided, and the vision and the audition of a user are protected. The back board part is provided with an analog video preview output interface and an analog audio preview terminal, so the user can watch and listen to the played signal contents to be switched in advance, and the reliability and safety of play are improved.

The invention can automatically tunes the volume of playing sound signal to meet a volume weaken condition and includes the follow steps: when the signal meets the sound volume weaken condition, after tuning down the sound volume, the media signals are played again; when the signal doesn't meet the volume weaken condition, the current signal is directly played; deciding if the played signal meets the condition of continuing play; if yes, then returning to the initial state of the program, and then deciding if the signal still meets the sound volume weaken condition.

The invention discloses a bathroom anti-skid ceramic tile equally-dividing cutting device, comprising a base, a dual-axle motor, a cutting wheel, a left clamping jaw and a right clamping jaw. Connecting shafts are connected to output shafts on both ends of the dual-axle motor through shaft couplings. A wire winding wheel is fixedly mounted on each connecting shaft. The wire winding wheels are wound with pull wires. A lifting plate is connected with the other ends of the pull wires. A first screw rod is provided with a threaded sliding block in a threaded mode. The threaded sliding block is further arranged on the first screw rod in a sliding mode. A motor frame is fixedly arranged on the lower side of the threaded sliding block through bolts. A cutting motor is fixedly arranged on the rearside of the motor frame. An output shaft of the cutting motor is provided with the cutting wheel in an interference fit mode. Moving up and down of the lifting plate is realized, so that the cuttingwheel on the cutting motor is driven indirectly to go down and anti-skid ceramic tiles are subjected to equally-dividing cutting, and equally-dividing cutting of the anti-skid ceramic tiles with different thicknesses is achieved.

The present invention discloses a method for inducing brain wave synchronization. Said method includes the following steps: (1), according to the set EEG frequency required for induction making left-right sound channel short-sound reciprocally-stimulated period and working frequency, the reciprocal working frequency is 5-40H2; (2), separating the inputted audio signal into main and auxiliary sound channels; (3), utilizing defined reciprocal working frequency to control main and auxiliary sound channels and respectively alternatively switch them into left ad right sound channels, and alternatively playing the audio signal modulated by step 2. Said invention also provides a device for implementing said method, said device includes the components of sound channel separation circuit, switching circuit and playing controller, etc.

A setting method and device for actual volume of a television comprises a collecting element of actual volume of a television and a memory device. The memory device is used for memorizing preset maximum of actual volume of television and memorizing a correspondent relation table of actual volume and actual acoustic pressure level. The invention includes the following procedures that: a. user presses on the volume-increasing button, thus obtaining needed volume value; b. the television transforms received volume into acoustic volume levels; c. with comparison between the acoustic pressure level and the system-preset volume maximum, if the acoustic pressure level is bigger than the preset volume maximum, operation requesting volume increase will not work, or, d. writing the volume into memory device; e. implementing sound output processing; f. volume is displayed on the television screen. The invention and device can not only enable users know the sound of television and the actual sound pressure, but also protect the hearing of user and surrounding environment by limiting over high sound pressure.

The invention discloses an acoustic signal processing system for a mobile portable device and a processing method thereof. The system adopts a microphone on the existing mobile portable device to collect acoustic signals on the periphery of the existing mobile device and adopts an operational unit to compute various acoustic property indexes in a present environment, displays various analysis results and patterns through a display, and gives suggestions for users according to analysis results. If the mobile portable device is provided with a communication network, the system can also transmitthe analysis results and the azimuth position of the mobile portable device to a server, and the server can predict and draw an acoustic distribution diagram in a larger zone through data fed back from all users and a geographic information system, and feed back summarized results to all the users, thereby realizing real-time monitoring, analysis and early warning on noise in a large zone.

The invention relates to an audio generation method, an audio playing method, an audio receiving method, an audio generation device, an audio playing device, an audio receiving device and an audio transmission system. The receiving method comprises the steps of: generating an identification code uniquely corresponding to an audio stream to be coded; according to the duration corresponding to the audio stream, generating continuous time coding sequences; combining the identification code, the time coding sequences and a corresponding lead code, so that a corresponding data packet is formed; coding the formed data packet, so that an audio sequence is obtained; modulating the audio sequence corresponding to the audio stream obtained by coding, and generating a corresponding audio file; and sending the generated audio file to the corresponding audio playing device. By adoption of the scheme, the transmission speed of the audio stream can be increased while the identification success rate is compatible.

The automatic gain control (AGC) device includes an input port and an output port, a multiway switch, an attenuator circuit, and an A / D converter. AGC can adjust outputted audio volume automatically in order to protect audition of user from harm. The invention also discloses audio process device containing AGC device, and earphone containing AGC device.

The invention relates to a method for playing an audio file. The method for playing the audio file comprises the steps that the audio file is scanned so that a volume gain value can be obtained and the gain value can be written in the audio file; the gain value stored in the audio file is read; the volume output when the audio file is played is adjusted according to the gain value; the audio file is output. According to the method for playing the audio file, the audio file is scanned, so that the volume gain value of the audio file is obtained, the volume output when following different audio files are played is unified, impact, caused by volume change generated when different audio files are switched, on a user is reduced, and the hearing of the user is protected. In addition, the invention further provides a device for playing the audio file.