33results about How to "Effective pickup" patented technology

The invention provides an earphone call noise reduction method and an earphone. In one embodiment, the method comprises the steps of receiving a plurality of first speech signals outside a human ear by at least one external microphone; receiving a second voice signal in the human ear through an inner ear microphone; converting the plurality of first voice signals and the second voice signal into afrequency domain; performing beam forming on the plurality of first voice signals to obtain a third voice signal; performing echo cancellation processing and spectrum continuation processing on the second voice signal to obtain a fourth voice signal; and calculating the signal-to-noise ratio of each frequency point in the third voice signal, performing weighting processing on the third voice signal and the fourth voice signal through the signal-to-noise ratio to obtain a fifth voice signal, and converting the fifth voice signal into a time domain and outputting the fifth voice signal. Under the complex acoustic scenes of low signal-to-noise ratio, more speaker interference and the like, the voice of a wearer can be effectively picked up, and other noises can be suppressed.

The invention discloses a cellphone motor vibration testing method, and the method comprises the steps: starting a cellphone motor and enabling the motor to start to work; picking up a motor vibration signal through a cellphone microphone, and converting the motor vibration signal into an electric signal; carrying out the spectral analysis of the electric signal collected by the microphone through an FFT algorithm, comparing the information of electric signal with a normal motor spectral information, and judging whether a test motor is working normally or not. Because the microphone of the cellphone is employed as a signal collection tool and the microphone and the vibration motor are disposed in a cavity of the cellphone, the method can pick up the motor vibration signal more effectively, greatly improves the anti-interference capability, carries out the spectral analysis of the data through the FFT algorithm, analyzes and judges the quality of the vibration function of the motor through analyzing and quantifying the specific indexes of the motor vibration: main frequency point, main frequency amplitude and noise amplitude, is more accurate and reliable in testing result, greatly simplifies the needed clamping tool and equipment, and reduces the testing cost.

The invention relates to a mechanical badminton ball picking trolley which comprises a body. Front wheel components are mounted at the front end of the body, the trolley travels through the front wheel components, the front wheel components are connected with a brush roller component through a transmission structure, the brush roller component is mounted on the body and connected with a conveying component through a transmission structure, the conveying component is obliquely mounted on the body, and a ball storage basket is mounted at the tail end of the conveying component. According to the trolley, labor intensity can be reduced, and badminton ball picking efficiency is improved.

The embodiment of the invention provides a voice signal enhancement processing method and an earphone. The method comprises the following steps of: acquiring a first voice signal and a second voice signal, wherein the first voice signal and the second voice signal are voice signals acquired based on a first position and a second position respectively, and the first position and the second positionare taken as an outside-ear voice signal acquisition point and an inside-ear voice signal acquisition point respectively; at least performing echo cancellation processing on the second voice signal to obtain a third voice signal; and fusing the third voice signal and the first voice signal to obtain a fourth voice signal, and outputting the fourth voice signal. The earphone comprises a first microphone, a second microphone and an audio processor. Through adoption of the voice signal enhancement processing method and the earphone, the voice of a wearer can be effectively picked up and other noises can be suppressed in complex acoustic scenes such as low signal-to-noise ratio and multi-speaker interference. Moreover, the earphone is small in size, is lighter, and is lower in production andmanufacturing costs.

The present invention relates to the technical field of sensors and more particularly relates to a fault traveling wave signal coupling sensor for an online fault ranging device. The sensor includes ahousing, a wire winding framework, a coil, a signal board, a PG head, and a signal line. The wire winding framework is arranged in the housing, the coil is wound on the wire winding framework, the signal board is fixed in the housing, the coil is electrically connected to the signal board, a mounting hole is formed in the housing, the PG head is connected to the mounting hole, the signal line passes through the PG head to connect the signal board, and the signal line is fixed to the housing through the PG head. The fault traveling wave signal coupling sensor for the online fault ranging device provided by the invention has good market application value for ensuring the effectiveness of the online fault positioning device and improving the power supply reliability of a power grid.

Provided is an electronic device (100). The electronic device (100) includes a housing (301), a microphone (114), and a PCB (302), wherein the microphone (114) is sealed by a silicone sleeve and disposed on the PCB (302); the silicone sleeve is provided with a sound guiding hole (303), and the sound guiding hole (303) aligns to a sound pickup hole in the housing (203) to form a sound guiding channel; the housing is also provided with a USB jack (201) or a headphone jack (202), the USB jack (201) or the headphone jack (202) and the sound pickup hole (203) are on the same side of the housing (301); and a sound guiding groove (305) is further formed in the housing(301), and one end of the sound guiding groove (305) is communicated to the sound pickup hole (203), and the other end of the soundguiding groove (305) is communicated to the USB jack (201) or the headphone jack (202), so that when the microphone (114) picks up the sound, if the sound pickup hole (203) is blocked and cannot pickup the sound, the USB jack (201) and the sound guiding groove (305) in the housing (301) are communicated, and then the microphone (114) passes through the sound guiding groove (305) by means of theUSB jack (201), and then can normally pick up the sound through the sound guiding hole (303) in the silicone sleeve, thus ensuring the calling quality of the user, and also improving the calling experience of the user.

The invention relates to a friction block production device and a friction block production method. The friction block production device comprises a mixing mechanism, a pressing and forming mechanismand a pressing and sintering mechanism, wherein the mixing mechanism mixes and stirs materials to form a mixed material; the pressing and forming mechanism comprises a pre-pressing mechanism and a primary pressing mechanism;, the pre-pressing mechanism pre-presses the mixed material, the primary pressing mechanism re-presses the pre-pressed mixed material and the pressure of the pre-pressing mechanism is smaller than a pressure value of the primary pressing mechanism; and the pressing and sintering mechanism pressurizes and sinters the pressed and formed mixed material. The friction block production device solves the problem that the compact density of a friction block is low and the friction block even has cracks as the compact will expands elastically to increase the volume as a result of release of elastic stress after an existing friction block is pressed.

The invention provides an African drum and a sound pickup device thereof. The sound pickup device comprises a supporting component installed inside a drum body and a piezoelectric acoustic sensor mounted on the supporting component; the piezoelectric acoustic sensor includes a piezoelectric guide sheet and a PCB; the piezoelectric guide sheet and an audio output port are electrically connected with the PCB; and the piezoelectric guide sheet is spaced apart from a drum head by a predetermined distance. According to the sound pickup device of the African drum of the invention, the piezoelectricacoustic sensor is directly assembled inside the drum body of the African drum, and therefore, the original timbre of the African drum will not be affected, and the timbre of the African drum in different ranges can be effectively picked up, and troubles brought about by a condition that a user arranges a microphone during drum playing to realize sound pick up and amplification can be avoided, theoutput of high-fidelity sound quality can be ensured, the user can easily and effectively amplify the sound of the drum to adapt to the performance of different occasions, the improvement of performance can be benefitted, and good user experience can be ensured.

The invention relates to the field of sound guiding device accessories, and discloses a sound guiding device complete set accessory, which comprises a sound guiding head, a sound guiding needle and afixing frame, and is characterized in that the sound guiding head comprises a cover cap, a connecting pipe and a connecting head, the right end of the cover cap is in left-hand threaded connection with the interior of the left end of the connecting pipe, and the left end of the connecting head is fixedly connected with the right end of the connecting pipe. The sound guide device is a complete accessory. An earphone pickup head of the pickup is fixed between the cover cap and the connecting pipe; the sound guide head is hermetically connected with the earphone wire; reducing debris intrusion, affecting tone quality effects, the sound guide tube can be closer to a position needing sound pickup; the pickup effect of the pickup can be enhanced; when the sound guide needle is used, the sound guide sleeve on the new sound guide needle needs to be directly connected with the sound guide head, the sound guide head does not need to be replaced, the application range of the device is wide, the fixing rod can fix and limit the sound guide sleeve and the sound guide tube, the sound guide sleeve and the sound guide tube are more convenient to place, and the sound guide needle is more convenientto store when not used.

The disclosed a cleaning article which includes a working surface made from first ends of a plurality of channels and a capturing surface. The channels are formed from multiple strands of a skip-slit sheet, which in an initial state extend in a first direction and together define a plane. The multiple strands are attached to each other at bridging regions. At least some of the strands are spread from the initial state and separated from each other between the bridging regions to provide the plurality of channels, and at least some of the strands that are separated from each other are twisted out of the plane. A cleaning tool including the cleaning article, a method of making the cleaning tool, and a stack of skip-slit spunbond nonwoven sheets are also disclosed.

The invention discloses a single reinforcement spiral spring piece and particularly relates to the field of geophones. The single reinforcement spiral spring piece is applied to a hanging system of a geophone and characterized by comprising process reinforcement in an Archimedes helix shape and arranged between an inner circular ring and an outer circular ring. The process reinforcement rotates from outside to inside with the rotation angle being 689-738 degrees, and the width of the process reinforcement is decreased from 0.854 mm-0.884 mm to 0.756 mm-0.786 mm from outside to inside. According to the single reinforcement spiral spring piece, the data collecting requirement of high-resolution exploration is met, the natural frequency of the geophone is reduced, seismic exploration deep-layer and low-frequency effective information is effectively picked up, and the fidelity of seismic wave data collecting is improved. By means of the single reinforcement spiral spring piece, the natural frequency of the geophone can reach 1 Hz, and accordingly field usage is more convenient.