34results about How to "Soft voice" patented technology

A video communication device includes a video communication device body; a camera fitted to the video communication device body to record images of an object; at least one detection unit fitted to the video communication device body to detect the object according to a predetermined condition; and a camera rotation angle adjuster fitted to the video communication device body to adjust a rotation angle of the camera according to detection data from the detection unit so that the camera automatically tracks a position of the object when the object moves. The moving object can be located through a detection unit, such as a voice sensor, a codec, a color sensor and an IR sensor, and be automatically tracked by suitable adjustment of the rotation angle of a camera. A wide angular field is ensured and video telephony quality is improved.

The invention discloses a voice prompt and alarm system based on a vehicle-mounted sound system. An automobile reversing radar sends detection signals to an automobile instrument, the instrument sends alarm signals to a sound device through a CAN, and the sound device carries out alarming through loudspeakers. On the premise of not changing a current electronic frame and not increasing cost, an entertainment system in an automobile is used for carrying out relevant voice alarming, the vehicle-mounted sound system has the better loudspeaker effect and is provided with DSP sound processing software with the wider adjustable range, a driver is prompted, and meanwhile sounds are softer, more sweet-sounding and more beautiful. The loudspeakers at different positions carry out alarming to achieve different alarming functions, and a user can easily judge which function module breaks down and gives alarming/promoting sounds. Meanwhile, the probability that the driver frequently lowers the head to cause accidents can be reduced.

The invention discloses a pure rolling contact structure with low noise and low abrasion loss for a rail transit wheel and a guiding rail. The pure rolling contact structure comprises column-shaped wheels (7) and rolling guiding components (6), wherein, the outer round surfaces of the column-shaped wheels (7) are in contact with the upper surface of the guiding rail; the rolling guiding components (6) are assembled on a bracket (17) fixedly connected with a vehicle chassis and/or a wheel shaft; and the rolling guiding components (6) are in rolling contact with the inner side surfaces of the guiding rail. In the invention, the sliding contact between the wheels and the guiding rail is changed into the rolling contact, so that the structure is safer, and beneficial to overcome the defects such as high noise, high abrasion and the like in the existing contact manners.

A stick type drum stick is disclosed which includes drum stick design featuring a hole drilled longitudinally in the playing striking end. The primary purpose is to accommodate a rod. The rod is inserted and glued into the hole of the tip. The rod can be cut to a desired length to suit its flex and resilient nature. Suitable material for the rod include nylon or delrin, PVC, ABS, polypropylene or polycarbonate. The result of combining these materials in this format produces a filter tip drum stick.

The invention discloses an automobile instrument shell and a backlight module. The backlight module comprises an anti-surge circuit, a buzzer drive circuit, a comprehensive data display circuit, a backlight adjustable circuit, an expansion indication lamp drive circuit, an anti-static device and a CPU. The output end of the anti-surge circuit is connected with the power input end of the CPU, the power input end of the buzzer drive circuit, the power input end of the comprehensive data display circuit, the power input end of the backlight adjustable circuit and the power input end of the expansion indication lamp drive circuit. The signal output end of the comprehensive data display circuit is connected with the signal input end of the backlight adjustable circuit, the buzzer signal output end of the comprehensive data display circuit is connected with the signal input end of the buzzer drive circuit, the indication lamp signal output end of the comprehensive data display circuit is connected with the signal input end of the expansion indication lamp drive circuit, and the signal output end of the expansion indication lamp drive circuit is connected with the signal input end of the backlight adjustable circuit.

The present invention discloses a curved sound player having a projection display function. The curved sound player having the projection display function comprises a curved display and a projection device, and also comprises a film speaker attached onto the curved display, wherein the film speaker comprises at least one sounding film, at least one conductive film, at least one insulating layer, and at least two conductive terminals; the at least one conductive film is coated on the at least one sounding film; the at least one conductive film is made from a nano-wire material; the at least one insulating layer is attached onto the at least one conductive film; the at least one insulating layer and/or a tone quality improving layer comprise(s) a plurality of groups of micro machining structures; the at least two conductive terminals are attached onto the at least one conductive film and are connected with a speaker driving circuit. According to the present invention, the film speaker and the curved projection display are combined, and the film speaker is attached onto the surface of the curved projection display; as the film speaker is transparent, the content displayed by the curved projection display is not influenced, and the display can play sound simultaneously while displaying videos or images, and therefore, the practicability of the display is enhanced, and the intelligence is relatively high.

The invention relates to an earphone comprising a housing and a speaker disposed at the inner rear of the housing. A housing inner cavity in front of the speaker forms a front cavity. A first partition is disposed in the front cavity and provided with one to a plurality of sound holes, each which is covered with a diaphragm; the diaphragm on at least one sound hole is a gapped half diaphragm. The front cavity is also provided with an inner second partition close to the sound outlet end of the front cavity. The second partition is provided with a plurality of through holes in spaced circles and close to the perioral edge of the second partition. The front peripheral edge of the second partition is provided with a circular stop edge, and a plurality of unit partitions are fixed on the inner ring wall of the circular stop edge at intervals. The unit partitions divide space between the second partition and the front end wall of the front cavity into a plurality of unit cavities on the periphery and a central cavity communicated with every unit cavity. The front end wall of the front cavity is provided with a sound outlet communicated with the central cavity. The earphone is simple in structure, ingenious in design and capable of producing ideal sound effect, and has low damage to human ears.

Disclosed is an apparatus for extending a bandwidth of a sound signal. The apparatus includes a database that stores predetermined training information as a result of at least one of Gaussian mixture model (GMM) training and hidden Markov model (HMM) training; a modified discrete cosine transform (MDCT) transformer that transforms a first band signal through MDCT, a feature extractor that extracts a feature parameter of the first band signal from an MDCT coefficient output from the MDCT transformer; an extender that provides an extended MDCT coefficient for a second band signal based on the MDCT coefficient of the first band signal output from the MDCT transformer, a subband energy estimator that estimates subband energy of the second band signal with reference to information stored in the database based on the feature parameter.

The invention relates to the technical field of loudspeakers, and especially relates to a moving coil piezoelectric compound loudspeaker. The moving coil piezoelectric compound loudspeaker comprises a shell and a supporting plate; the shell is provided with a sound outlet; the supporting plate is arranged at the inside of the shell; the supporting plate separates the shell into a moving coil cavity and a piezoelectric cavity; the moving coil cavity is communicated with the sound outlet; the inside of the moving coil cavity is provided with a moving coil unit; the inside of the piezoelectric cavity is provided with a piezoelectric vibrator; the supporting plate is provided with a sound guide hole; and the piezoelectric cavity is communicated with the moving coil cavity through the sound guide hole. According to the moving coil piezoelectric compound loudspeaker provided by the invention, the piezoelectric vibrator is added on the basis of an original moving-coil loudspeaker, and the piezoelectric vibrator compensates the sound effect and sound quality of the moving-coil loudspeaker at high frequency, so that the moving coil unit and the piezoelectric vibrator vibrate and produce a sound simultaneously to form a resonance, so as to widen the frequency response range and improve listening experience of users.

The invention discloses a rear-arranged main silencer which comprises a cylinder, an air inlet pipe, an air outlet pipe, a front end cover and a rear end cover. A first partition plate and a second partition plate are sequentially arranged on the inner edge of the cylinder in the longitudinal direction of the cylinder and sequentially divide the cylinder into a first cavity, a second cavity and a third cavity. The outlet end of the air inlet pipe extends into the third cavity from the front end cover of the cylinder. The air inlet end of the air outlet pipe is communicated with the second cavity. The portion, located in the second cavity, of the air inlet pipe is provided with an air hole. The second partition plate is provided with an air hole so that the second cavity and the third cavity can be communicated. The first partition plate is provided with a middle pipe so that the second cavity and the first cavity can be communicated. On the premise of not increasing the volume for exhausting and silencing, second-order noise of an exhaust port can be effectively lowered.

The invention discloses a vibration plate and a sound production device. The vibration plate comprises at least one composite fiber layer and at least one foaming body material layer, the at least one composite fiber layer and the at least one foaming body material layer are arranged in a stacked mode, and composite fibers in the composite fiber layer comprise carbon fibers. According to the technical scheme, the modulus of the vibration plate can be improved, and the frequency response range of the vibration plate is widened.

The invention discloses a gasoline exhaust silencer. The silencer comprises a casing as well as a front outer baffle and a back outer baffle which are located at the front end and the back end of the casing to seal the casing; four inner baffles are arranged inside the casing; an inner cavity of the casing is divided by each inner baffle into five chambers; at least 60 air holes are formed in each inner baffle; an air inlet is formed in the middle of the casing; the outer layer of the air inlet in the middle of the casing is sleeved with a reinforcing plate outer layer; air outlet inner pipes are inserted in two ends of the casing; at least 250 air holes are formed in the middle of each air outlet inner pipe; and sound absorbing layers are arranged on outer walls of the air holes in the middles of the air outlet inner pipes. The silencer is reasonable in structure, has the relatively good silencing effect at the temperature and under the pressure of a working air flow in the required frequency range, the sound is reduced by 1-2 db at the rated rotating speed, and the power loss is reduced by 0.3%.

The invention discloses a parameter adjustment method, an intelligent terminal and a storage medium. The method comprises the following steps: acquiring a running moment of the intelligent terminal in real time; determining a corresponding parameter adjustment rule in a preset parameter adjustment list according to the operation moment; and adjusting the parameters of the intelligent terminal according to the parameter adjustment rule. Parameters can be automatically adjusted according to different times, and the trouble of manually adjusting the parameters by a user is reduced.

The invention relates to a loudspeaker with a better sound effect. The loudspeaker is characterized by comprising a loudspeaker main body and a flexible elastic vibrating diaphragm which is arranged on the outer edge of a horn opening of the louderspeaker. The flexible elastic vibrating diaphragm is additionally arranged, so that on the one hand, the vibrating diaphragm can reduce the vibration of the loudspeaker main body, on the other hand, the vibration of the vibrating diaphragm can enhance a bass effect and improves the curve between the alto voice and the high pitch, and then the loudspeaker makes a soft sound.