10results about How to "Reduce environmental noise" patented technology

The invention provides an eyeshade capable of pressing acupuncture points to promote sleep. The eyeshade comprises an eyeshade body and an eyeshade head band assembly. The eyeshade comprises an eyeshade body, a middle U-shaped convex block and a top convex block, the eyeshade body is used for shading the eyes and is positioned through the middle U-shaped convex block of the eyeshade and the concave position of the nose bridge, at the moment, the top convex block of the eyeshade is just pressed on the Yintang acupoint, and the two sides of the eyeshade are each provided with two side holes connected with the eyeshade head band assembly; the eyeshade head band assembly comprises an eyeshade head band, earplugs and silica gel round head protruding blocks, the eyeshade head band assembly and the eyeshade are connected in a bonding mode through hook-and-loop fasteners, the eyeshade head band and the ears are positioned through two ear openings, and the earplugs are arranged according to the distance between the sleeping acupoint and the ears. The vacant positions where the silica gel round head protruding blocks on the two sides of the eyeshade head band are located are adjusted to be aligned with the peaceful acupoint to press the peaceful acupoint, the earplugs are used for reducing noise of ears, and at least one mouth-shaped notch is formed in the eyeshade head band and the head body of a user to achieve the limiting effect.

The invention provides a method for eliminating audio noise based on an SOX library, an audio playing terminal and a storage medium. The method comprises a noise reduction model file generation step and an audio noise reduction step. The method has the beneficial effects that more process improvements on intelligent hardware are not needed, the environmental noise of an equipment end is greatly reduced by depending on the performance of a mobile phone, the hardware process cost is saved, and the experience of a real-time audio call process is improved.

This invention discloses an audio enhancement system and method for underground broadcasting systems, relating to the field of audio enhancement technology. The system acquires noise signals and original audio signals from a mine roadway, processes them through standardization, encodes and transmits them, and then decodes them to obtain a standardized noise signal. The standardized noise signal undergoes frequency band amplitude shaping and time delay compensation, followed by a phase inversion operation to generate a reverse noise signal. Based on the original audio signal and a roadway sound reflection model, the reverberation component within the roadway is predicted. After phase inversion, a reverse reverberation signal is generated, and a reverberation gating coefficient is introduced for weighted control to obtain the actual reverse reverberation signal. The original audio signal, the reverse noise signal, and the actual reverse reverberation signal are then superimposed to obtain the final audio signal. Utilizing the principle of destructive interference, the system effectively reduces the impact of environmental noise and reverberation.

The utility model provides a sound-absorbing crystal wood board convenient to install, which comprises a plurality of composite sound-absorbing boards, the whole composite sound-absorbing boards are arranged in a rectangular shape, two ends of each surface of each composite sound-absorbing board are respectively provided with an installing groove, and a connecting mechanism is clamped in each installing groove. During use, after the edges of the two composite acoustic panels are aligned, the I-shaped connecting blocks can be embedded into the inverted-T-shaped mounting grooves, the limiting springs are compressed under the extrusion of the inner walls of the mounting grooves by utilizing the guide of the inclined planes of the right-angled trapezoidal clamping blocks, and when the connecting blocks are inserted into the clamping grooves, the clamping blocks reach the clamping grooves, the clamping blocks can be clamped into the clamping grooves; each surface of the composite acoustic panel is provided with a mounting groove and a connecting mechanism, multi-direction extension splicing is supported, the mounting flexibility is improved, during dismounting, the push block with the anti-skid groove is pushed to drive the clamping block to be separated from the clamping groove, the connecting block can be taken out, quick dismounting is realized, and the use convenience is remarkably improved.

The utility model belongs to the technical field of audio equipment, and particularly relates to a microphone wind screen for a voice acquisition device, which comprises a fixed part, a movable part is arranged on the side surface of the fixed part, and the outside of the fixed part is fixedly connected with an inclined strut assembly; the inclined strut assembly comprises an inclined plate, one end of the inclined plate is connected with the fixing piece, the other end of the inclined plate is fixedly connected with a transverse plate, the transverse plate is rotationally connected with a mounting plate, the side face of the mounting plate is connected with a wind shielding piece in an inserted connection mode, the wind shielding piece is arranged to be in a horn shape, and the open end of the wind shielding piece is sleeved with a protective net. By the adoption of the design that the movable piece and the fixed piece are combined with the inclined strut assembly, high universality and flexibility are provided; the structure not only allows the windproof screen to be rapidly installed on microphone supports of different models and sizes, but also can adapt to various recording environments by adjusting the included angle between the installation plate and the inclined strut assembly.

The present invention relates to the technical field of light alloy manufacturing, and in particular to a processing mold and processing method for a thin-walled part with an annular groove on the end face; the processing mold comprises: a milling processing mold for processing the inner wall of the side of the thin-walled part and a lathe processing mold for processing the thin-walled end face with an annular groove; the milling processing mold is provided with a protective plate surrounding the side surface in a circumferential direction on the side of the thin-walled part; the lathe processing mold is provided with an external support structure for pressing the outside of the central annular end face of the thin-walled part and an internal support structure for supporting the inside of the central annular end face of the thin-walled part, and the external support structure and the internal support structure are used to keep the thin-walled part stable when processing the annular groove. The processing mold solves the deformation and vibration of the second end face during lathe processing and the side vibration during milling processing, and realizes high-precision and stable processing of the side wall and end face of magnesium alloy thin-walled parts.

A wearable two-way communication audio device includes: a first microphone providing a first microphone signal; a second microphone that provides a second microphone signal; and one or more processors. The one or more processors are configured to estimate an ambient noise level using the second microphone signal and adjust the equalization filter based on the estimated ambient noise level. The first microphone signal and the second microphone signal may be processed via a first beamformer to provide a first beamformed signal, and the first beamformed signal may be filtered with an equalization filter to provide a noise estimation signal. The one or more processors may also use the noise estimation signal to generate a voice output signal for transmission to a remote recipient.

The invention discloses an audio processing method and a charging box, the audio processing method is applied to the charging box, the charging box is in Bluetooth connection with a Bluetooth earphone and a terminal device, and the audio processing method comprises the following steps: acquiring voice data transmitted by the Bluetooth earphone; acquiring environment sound data picked up by a microphone on the charging box; performing noise reduction processing based on the voice data and the environment sound data to obtain noise-reduced audio information; and transmitting the noise reduction audio information to the terminal equipment. The voice data transmitted by the Bluetooth headset and the environmental sound data picked up by the charging box are acquired, and noise reduction processing is performed based on the voice data and the environmental sound data, so that the problem of unclear human voice caused by noise in Bluetooth communication is solved.

The utility model discloses an explanation emitter and a wireless explanation device. The explanation emitter comprises a housing, a control mainboard, a moving-coil microphone, a microphone protection net, a transceiver, a transmit-receive antenna and a battery. The shell is provided with a head part and a tail part which are away from each other; an accommodating cavity is formed in the shell; at least part of the surface of the shell forms a handle part; the control mainboard is arranged in the accommodating cavity; the moving-coil microphone is arranged at the head part of the shell and is electrically connected with the control mainboard; the microphone protective net cover is arranged at the periphery of the moving-coil microphone and is connected with the shell; the transceiver is arranged in the accommodating cavity and is electrically connected with the control mainboard; the transmitting-receiving antenna is arranged in the accommodating cavity and is far away from the area where the handle part is located, and the transmitting-receiving antenna is further electrically connected with the control mainboard; the battery is arranged in the accommodating cavity and is electrically connected with the control mainboard; by adopting the moving-coil microphone, the sound of an explainer can be picked up at a short distance, a large amount of picked environmental noise is reduced, and the voice definition and intelligibility are improved.

The invention relates to a vehicle control method and device, a vehicle and a storage medium. The environment data of the environment where the vehicle is located can be obtained; if it is determined that a target object exists in a first preset area corresponding to the vehicle according to the environment data, the motion state of the target object is determined according to the environment data; and according to the motion state, the vehicle is controlled to conduct starting warning according to a preset warning strategy.