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822 results about "Pickup" patented technology

A pickup is a transducer that captures or senses mechanical vibrations produced by musical instruments, particularly stringed instruments such as the electric guitar, and converts these to an electrical signal that is amplified using an instrument amplifier to produce musical sounds through a loudspeaker in a speaker enclosure. The signal from a pickup can also be recorded directly.

Ear terminal with microphone for voice pickup

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.
Owner:HONEYWELL HEARING TECH

Remote audio device management system

An audio device management system (ADMS) manages remote audio devices via user selections in video links. The system enhances audio acquisition quality by receiving and processing human suggestions, forming customized two-way audio links according to user requests, and learning audio pickup strategies and camera management strategies from user operations. The ADMS control interface for a remote user provides a multi-window GUI that provides an overview window and selection display window. The ADMS provides users with more flexibility to enhance audio signals according to their needs and makes it more convenient to form customized two-way audio links without requiring users to remember a list of phone numbers. The ADMS also automatically manages available microphones for audio pickup based on microphone sound quality and the system's past experience when users monitor a structured audio environment without explicitly expressing their attentions in the video window.
Owner:FUJIFILM BUSINESS INNOVATION CORP

Constrain-free, imperceptible sleep disorder measuring device and its method

The invention discloses a sleepy obstacle measuring device and method of limitless and non-awareness, which is characterized by the following: setting the pickup and microprocessor in the pillow; placing the microphone on two sides of pillow toward the detector mouth and nose to receive the sound in the phonetic interface of microprocessor; transmitting the magnified sound signal through microphone to the microprocessor; proceeding sound signal filter and intelligent judgment of limitless and non-awareness sleepy obstacle measurement; judging the sleep respiratory and sleep respiratory hesitation symptom; sending the judgment result to the specialist through interface to treat and improve the sleepy obstacle.
Owner:ZHEJIANG UNIV OF TECH

Signal processing method for enhancing target voice signal pickup in sound environment

The invention relates to a signal processing method for enhancing target voice signal pickup in a sound environment. The method includes the steps that (1), parameters of an ESN are acquired through experiments, and a corresponding sound source model is established; (2), the model is used for two occasions, namely, when output of the model is certain expected target voice signals and input of the model is a mixture of sound environment reflected sound signals of a target voice source and the target voice signals, the model can be used for echo cancellation of field amplified sound; when the output of the model is the expected target voice signals and the input of the model is a mixture of sound environment reflected sound signals of another specific voice source and the target voice signals, the model can be used for echo cancellation of voice communication between two specific persons; (3), when the model is used by a target voice person in the actual sound environment and the pickup position changes, reflected signals of sound source signals pointed by training can be suppressed as well, and then corresponding enhanced target voice signals are output. By the adoption of the signal processing method, the influence of the change of the pickup position on quality of the voice signals is overcome.
Owner:FUQING BRANCH OF FUJIAN NORMAL UNIV

Echo attenuating method and device

The present invention relates to an echo reduction method implemented with a multi-sensor sound pickup device (8) forming an antenna (10), and a sound playback device (13). The method consists in subjecting the output signals ym(t) from the sensors (11m) to complex weights w(f), said weights w(f) being calculated by maximizing the directivity factor Fd(f) under constraints at low frequencies and in the near field. The invention also provides an echo reduction apparatus (6). The apparatus comprises: a multi-sensor sound pickup device (8) forming an antenna (10); means for calculating a first constraint; and means for calculating a second constraint.
Owner:FRANCE TELECOM SA

Synchronous mutual-assistance classroom teaching system

PendingCN107945592AEnable real-time interactionRealize "face-to-face" interactive question answeringTelevision system detailsColor television detailsPickupBroadcasting
The invention provides a synchronous mutual-assistance classroom teaching system comprisi a main classroom unit and two remote classroom units. The main classroom unit arranged in a high-quality recoding and broadcasting teaching room has an interactive terminal. The two remote classroom units are provided with normalized recording and broadcasting systems and are equipped with interactive terminals, high-definition cameras, pickup units, audio processors, all-in-one units, and loudspeakers and the like. The omnidirectional pickup units pick up sounds in all directions and the collected soundsare processed by the audio processors in a high-quality manner. A cloud recoding and broadcasting platform carried out operation by means of network school connection. With interactive teaching and paired assistance, good-quality resource sharing is realized and an objective of education balancing is achieved. Therefore, the children in low-quality schools can share the high-quality education resources. During the process of interactive teaching, main teachers and assisted teachers prepare lessons jointly and teaching reflection and teaching evaluation are carried out, so that the professional development of teachers is realized and the collection of high-quality education resources is realized.
Owner:杨斌

Noise sensing bobbin-coil assembly for amplified stringed musical instrument pickups

A noise sensing bobbin-coil assembly for use in conjunction with a musical instrument pickup is disclosed. In particular, the bobbin of the bobbin-coil assembly is adapted to resist induced eddy currents thereby allowing a fewer number of coils to be used which in turn reduces undesirable interaction with the musical instrument pickup.
Owner:KINMAN CHRISTOPHER IAN

Automatic switching system and method for realizing active noise cancellation and sound-outside-earphone pickup

The invention provides an automatic switching system for realizing active noise cancellation and sound-outside-earphone pickup. The automatic switching system comprises a feedforward microphone, a first AD converter, a first low-delay filter, a feedforward filter, a sound-outside-earphone pickup filter and a voice activity detecting unit, wherein the feedforward microphone is arranged on the outerside of an earphone, and is used for acquiring ambient sounds outside the earphone; the first AD converter, the first low-delay filter and the feedforward filter are sequentially connected with the feedforward microphone; the sound-outside-earphone pickup filter is connected with the first low-delay filter, and is used for picking up sounds outside the earphone; and the voice activity detecting unit is used for detecting acquired ambient sound signals, and transmitting a switching command to control the switching of the feedforward filter and the sound-outside-earphone pickup filter. The automatic switching system automatically detects the external ambient sounds, switches active noise cancellation and sound-outside-earphone pickup according to the external ambient sounds, can adapt to different scenes effectively, and enhances the user experience.
Owner:BESTECHNIC SHANGHAI CO LTD

Adaptive noise reduction method based on audio feature extraction

The invention is suitable for the field of noise reduction and provides an adaptive noise reduction method based on audio feature extraction. The method comprises the following steps: A, collecting sound through a pickup; B, carrying out segmented analysis and processing of the collected sound according to a frequency range; C, comparing the processed sound with a preset frequency range and determining whether the sound is within the preset range, going on to execute the next step if the sound is within the preset range, otherwise, carrying out denoising processing; D, determining whether the sound within the preset frequency range is bigger than a preset value a of a physical sample, executing the next step if the sound is bigger than the preset value a, or determining that the sound is sound of human talk if the sound is smaller than the preset value a; E, determining whether the sound within the preset frequency range is bigger than an acoustic feature preset value b, executing the next step if the sound is bigger than the preset value b, or determining that the sound is sound of human talk if the sound is smaller than the preset value b; and F, determining whether the sound within the preset frequency range is bigger than a semantic feature preset value c, determining that the kept sound is sound of music if the sound is bigger than the preset value c, or determining that the sound is sound of human talk if the sound is smaller than the preset value c.
Owner:SHENZHEN HANGSHENG ELECTRONICS

Cloud language ability evaluation system and wearable recording terminal

The invention discloses a cloud language ability evaluation system, and belongs to the field of language evaluation. The cloud language ability evaluation system comprises a wearable recording terminal provided with a microphone array, an intelligent voice processing module and a language ability evaluation module, and the microphone array generates an audio vector file; the intelligent voice processing module firstly performs front-end signal optimization processing on the audio vector file, and then extracts multi-dimensional identification data from the audio vector file subjected to the front-end signal optimization processing by using a voice analysis algorithm corresponding to each sub-module; and the language ability evaluation module analyzes and counts the multi-dimensional identification data, and outputs a comprehensive evaluation result of the target speaker for visual display. According to the cloud language ability evaluation system provided by the invention, positioning and accurate pickup are carried out based on the microphone array, the intelligent, objective and automatic ability of the evaluation system is greatly enhanced, and the technical barrier of the existing domestic and overseas language evaluation systems is effectively broken through.
Owner:DUKE KUNSHAN UNIVERSITY

MVDR target sound source directional pickup method for microphone array

ActiveCN111044973AHigh precisionDoes not increase the amount of computationPosition fixationSound sourcesPickup
The invention relates to the field of acoustic signal processing, and aims to provide an MVDR target sound source directional pickup method for a microphone array. The method is small in calculation amount, high in positioning precision and capable of achieving directional collection of multiple target sound sources. The method comprises the steps of 1, acquiring all sound source signals in a preset sound intensity level range to obtain a sound source signal observation matrix; 2, carrying out filtering, framing and the like on the sound source observation matrix, and calculating a short-timespectrum; 3, determining the approximate orientation of a target sound source corresponding to the peak value position with the minimum delay on a cross-correlation curve by using a TDOA method; 4, determining the accurate position of the target sound source by using an MVDR method in the approximate orientation range of the target sound source; 5, directionally acquiring signals of the target sound source according to the accurate position of the target sound source; and 6, when there are two or more target sound sources, repeating the steps 3-5 at other peak positions of the original cross-correlation curve until directional pickup of all target sound sources is completed. According to the invention, the actual requirement of signal collection of multiple target sound sources is solved.
Owner:SHANDONG UNIV

Pickup method and device based on double microphones and computer equipment

The invention provides a pickup method and device based on double microphones, computer equipment and a computer readable storage medium, and the method comprises the steps: receiving a sound signal through the double microphones, converting the sound signal into a double-channel frequency domain signal, and carrying out fixed beam forming of double-channel frequency domain data, thereby generating a first single-channel frequency domain signal; performing noise reduction on the first single-channel frequency domain signal according to a preset algorithm to obtain a second single-channel frequency domain signal; and finally, converting the second single-channel frequency domain signal into a time domain, generating a final audio signal, and completing the whole pickup process of the doublemicrophones. In the process of realizing sound pickup, the whole sound pickup process can be completed only by the double microphones, so that the hardware production cost is effectively reduced. Inthe noise reduction process, the preset algorithm calculates the voice existence probability and updates the noise spectrum by using the double-microphone coherence function, so that the robustness tofar-field reverberation and noise is greatly improved under the condition that the calculated amount is small, and the pickup effect is effectively improved.
Owner:深圳市友杰智新科技有限公司
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