32results about How to "Ease of noise reduction" patented technology

The invention discloses a method and a device for conducting noise reduction on speech signals. The method comprises the steps of obtaining speech signals generated by a mobile terminal in a specified time period when the mobile terminal conducts speech communication; judging whether obtained speech signals only contain background noises or not; if obtained speech signals only contain background noises, updating a background noise library according to obtained speech signals; and if obtained speech signals do not only contain background noises, selecting background noises to be subjected to noise reduction from all background noises stored in the background noise library, and conducting noise reduction on obtained speech signals according to selected background noises. By the aid of the technical scheme, the problems that the speech communication quality of users is affected due to the fact that the good noise reduction effect can not be achieved when the mobile terminal in the prior art conducts noise reduction on speech signals according to background noises stored in advance can be solved.

Embodiments of the present disclosure disclose an audio noise reduction transmission method, device, electronic equipment, and computer-readable medium. A specific implementation of the method includes: acquiring the audio signal collected by the speech collection device; performing time-domain conversion processing on the above-mentioned audio signal to generate a time-domain waveform; performing spectrum conversion processing on the above-mentioned time-domain waveform to obtain an audio frequency spectrum; The audio spectrum is subjected to spectral feature extraction processing to generate spectral feature information; the above spectral feature information is input to a pre-trained audio extraction network to obtain a spectrum extraction result; the above spectral extraction result is subjected to noise reduction processing to obtain a noise-reduced audio signal. This embodiment implements noise reduction processing on audio, improves the noise suppression effect, and thus improves the audio transmission efficiency of the earphone.

The invention discloses a short-wave spectrum sensing method and a short-wave spectrum sensing system. An RF (radio-frequency) front-end unit dynamically adjusts the center frequency of a narrow-band electric tuning filter for multi-band short-waves at an RF analog front-end, and the Q value of a tuned loop is improved through an effective impedance matching network, thereby controlling the bandwidth of a filter to be fixed at a communication channel bandwidth or slightly greater than the communication channel bandwidth; after carrying out sampling on a signal, an analog-to-digital conversion module converts an analog short-wave signal in a pass band into a digital short-wave signal, and a digital signal processing unit realizes the sensing on the power spectrum of a received signal by using an energy detection algorithm. The method and system disclosed by the invention have the characteristics that the frequency band covering of short-waves is comprehensive, no image interference is introduced, and the method and the system are easy to implement.

The invention provides a high-precision chip mounting head capable of flight identification. The chip mounting head comprises a chip mounting head support, chip mounting shafts mounted in the chip mounting head support, a direction-Z elevation mechanism, a direction-R turning mechanism and a vacuum module group; the chip mounting head is characterized in that an integrated control assembly is mounted in the back side of the upper portion of the chip mounting head support, the vacuum module group is mounted in the front side of the upper portion of the support, a direction-R stepping motor which drives the direction-R turning mechanism and a CCD camera collecting images are mounted in the middle of the front side of the support, direction-Z driving motors are mounted in the back side of the support, and the directions of output shafts of the direction-Z driving motors are vertical to the axis-Z; and a flight camera device is mounted in the lower portion of the back side of the chip mounting head support, and comprises a light source assembly below a nozzle, a camera assembly, a camera support provided with the light source assembly and the camera assembly and a driving mechanism which enables the camera support to move along the axis-X, and an acute angle is formed between the direction of a lens of the camera assembly and the vertical direction in the XY plane. The chip mounting head is minimized and low-cost, and stable, accurate, rapid and high-precision chip mounting is realized.

The invention provides a high-precision low-weight chip mounting head. The chip mounting head comprises a chip mounting head support, chip mounting shafts mounted in the chip mounting head support, a direction-Z elevation mechanism, a direction-R turning mechanism and a vacuum module group, an integrated control assembly is mounted in the back side of the upper portion of the chip mounting head support, the vacuum module group is mounted in the front side of the upper portion of the support, a direction-R stepping motor which drives the direction-R turning mechanism and a CCD camera collecting images are mounted in the middle of the front side of the support, two vertical rows of direction-Z driving motors are mounted in the back side of the support, and the directions of output shafts of the direction-Z driving motors are vertical to the axis-Z; and a conflux packaging plate is mounted in the upper portion of a support of the vacuum module group, an air pressure detecting integrated module is mounted in the outer side surface of the conflux packaging plate, the bottom of the support of the vacuum module group is connected with a vacuum commutation plate, the upper side of the vacuum commutation plate is provided with vacuum outlets, the side surface of the vacuum commutation plate is provided with straight vacuum tubes connected to the vacuum outlets correspondingly, each straight vacuum tube is connected with one filtering assembly, and the filtering assemblies are connected with the corresponding straight vacuum tubes on the conflux packaging plate.

The invention discloses intelligent wearing equipment with the function of recognizing characteristic human voice and a using method of the equipment, and relates to the related field of wearing equipment. The equipment and the using method solve the problems in the prior art that the voiceprint recognition speed is low, the precision of recognizing the characteristic human voice is not high enough, and safety precautions on storage data are insufficient. Watchband connecting pieces are arranged at the upper and lower ends of a shell, a fixation cavity is formed in one end of each watchband connecting piece, a watchband is arranged at one end of each fixation cavity, and a fixation rod is arranged at one side of the upper end of each watchband connecting piece; a watch face is arranged inthe middle of the shell, anticollision angles are arranged at the corners of the shell, a horn is arranged at one side of the front end face of the shell, a subsidiary digital MIC is arranged at the upper end of the front end face of the shell, and a main digital MIC is arranged at the lower end of the front end face of the shell.

The invention provides a mounting head control system. The mounting head control system consists of a mounting head controller, an industrial mainboard, a Mark point camera, a Z axis moving module, a flight camera, a pneumatic module, an R axis motion module and an inductor module. The mounting head control system is characterized in that the Mark point camera, the Z axis moving module and the flight camera are connected to the industrial mainboard; the mounting head controller is connected to the pneumatic module, the R axis motion module and the inductor module; and the mounting head controller is connected to the industrial mainboard. The mounting head control system and method use a modularization idea and use a mounting head controller to be connected to the industrial mainboard, independently take charge for data processing of the pneumatic module, the R axis motion module and the inductor module, realize material absorbing and discharging of a mounting shaft, and member rotation in an R direction; the inductor is in charge of data collection of the pneumatic module and the R axis motion module and is in communication with the industrial mainboard through a CAN bus, which makes the whole system faster and more efficient. The mounting head control system and method effectively improve a material absorbing speed, reduce vacuum detection fluctuation and provide convenience to noise reduction processing of a detection signal of a simulation pressure sensor.