829 results about "Pickup" patented technology

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.

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.

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.

A musical instrument for use with an acoustic amplifier and an electric guitar amplifier for selectively providing the amplified sounds of an acoustic guitar, an electric guitar or both concurrently and in desired synchronization. The instrument includes an acoustic pickup and an electric pickup. The acoustic pickup is mounted adjacent the bridge of the guitar and provides a first output signal to an acoustic amplifier. The electric pickup is mounted in an insert in the sound hole of the guitar and provides a second output signal to an electric guitar amplifier. A pair of foot operated controllers are electrically coupled to the pickups for individually varying the strength of the output signals. If desired, a third controller is electrically coupled to one of the pickups to vary the synchronization of the signals.

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.

An electromagnetic pickup for a musical instrument, has two coils (2, 3) with pole pieces (4-8, 9-13) in their core regions and a connection that connects the two coils together, out of phase, in series or in parallel, so that they cancel each others extraneous noise and hum. To accomplish a noise-free pickup with the clarity and dynamics of a single coil pickup, and a uniform output level throughout its longitudinal axis, the coils are partly overlapping each other, the pole pieces in the core region of the first coil are partly overlapping with the pole pieces in the core region of the second coil, and the coils (2, 3) with the pole pieces (6-8, 1-13) induce the same voltage in the overlapping area (14) as the voltage induced by the coils and the pole pieces in their core regions outside the overlapping area (14).

Signals are received from audio pickup channels that contain signals from multiple sound sources. The audio pickup channels may include one or more microphones and one or more accelerometers. Signals representative of multiple sound sources are generated using a blind source separation algorithm. It is then determined which of those signals is deemed to be a voice signal and which is deemed to be a noise signal. The output noise signal may be scaled to match a level of the output voice signal, and a clean speech signal is generated based on the output voice signal and the scaled noise signal. Other aspects are described.

An electromagnetic pickup adapted to be secured to a stringed musical instrument, such as a guitar or bass or the like, of the type having a plurality of magnetic strings of ferromagnetic composition such as steel tensioned to provide musical notes under mechanical stimulation such as picking is disclosed. The electromagnetic pickup comprises at least one magnetized core having a length and a width. An electrically conductive material is wound into at least one coil around the magnetized core, and a ferromagnetic material such as iron, nickel, cobalt or alloys thereof is positioned on at least one side of the length and internally of at least a portion of the electrically conductive material. The electromagnetic pickup is mounted proximate the strings in such a manner that magnetic field of the pickup extends to the strings for the purpose of generating an output electrical signal analogous to the musical notes.

Musical instrument pickups comprising a plurality of coil-wire wrappings, each coil-wire wrapping having a particular geometric cross-section. Related embodiments exhibiting noise cancellation features are also disclosed.

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.

The invention discloses a distributed microphone pickup system and method in a complex scene, and the method comprises the steps: carrying out the array layout of a plurality of microphones through adistributed structure, and picking up the voice information in an application scene; the picked voice signals are processed through audio algorithms such as noise reduction, echo cancellation and reverberation removal, so that the pickup effect is improved, and smooth and clean voice signals can be obtained; and finally, outputting the processed voice signal to control the equipment to execute corresponding operation.

An electric-acoustic stringed instrument has a removable, adjustable and acoustic artwork top with a decorative bridge and tailpiece; a mounting system for electric string vibration pickups that allows five degrees of freedom in placement and orientation of each pickup anyplace between the neck and bridge; a pickup switching system that provides K*(K−1) / 2 series-connected and K*(K−1) / 2 parallel-connected humbucking circuits for K matched single-coil pickups; and an on-board preamplifier and distortion circuit, running for over 100 hours on two AA cells, that provides control over second- and third-harmonic distortion. The switched pickups, and up to M=12 switched tone capacitors provide up to M*K*(K−1) tonal options, plus a linear combination of linear, near second-harmonic and near-third harmonic signals, preamp settings, and possible additional vibration sensors in or on the acoustic top.

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.

Improved pickups for stringed instruments, such as guitars, ukuleles, banjos and the like. The pickup system includes a housing with a transducer element and a first magnetic means, and a distinct second magnetic means that cooperates with the first magnetic means to grasp a part of the instrument there between and thereby releasably mount the pickup on the instrument. Thus the pickup system can be easily mounted, removed or moved to other locations on the stringed instrument to produce the most desirable effect.

The invention discloses a noise imaging detection device and a noise imaging detection calculation method for a transformer substation. The noise imaging detection device consists of a microphone sound pick-up array, an audio preprocessing module, a multipath audio acquisition card, a digital signal processing control module, a short-term energy spectrum estimating unit, a sound mixing unit, a client, a display, an input keyboard and an acousto-optic alarm. According to the detection calculation method, the accurate time when a noise source reaches a sound pick-up is acquired by establishing a three-dimensional sound pick-up distribution model, and fault noise can be positioned rapidly and accurately via audio preprocessing, sound mixing processing, short-term energy spectrum estimation and application of three-dimensional spatial time difference positioning algorithm program calculation, so that technical support is provided for a high-voltage transformer substation to timely control the equipment running situation in an unattended machine room, and theoretical basis is provided for the accurate judgment of equipment fault points.

A method and apparatus for tracking a listener's head position for virtual stereo acoustics. The method of tracking the head position of a listener includes: obtaining face images of the listener using two image pickup units; tracking the skin color of an image, thereby obtaining the two-dimensional (2D) coordinate value of the listener's position; and obtaining the distance between the image pickup units and the listener using triangulation.

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.

An electromagnetic field pickup (10) for a musical instrument including an electromagnetic signal generator (12), an electromagnetic field transducer (18), a mixer (28), the electromagnetic signal generator (12), the electromagnetic field transducer (18) and the mixer (28) are respectively connected in series, the electromagnetic signal generator (12) is also connected directly to the mixer (28), so constructed and arranged that when power is supplied to the electromagnetic field pickup (10) an audio electrical signal of substantially same pitch, intonation and sustain as a vibrating element (22) of the instrument is generated.

The magnetic pickup response measurement and presentation system quickly measures frequency responses of magnetic pickups under various loading conditions, and the data is presented graphically and aurally to the user to aid user comparison and selection of magnetic pickups for use in musical instruments.

An electromagnetic pickup adapted for use with a multistringed musical instrument having strings formed of a ferromagnetic material having a first wire coil wound in a first direction in an elongated oval shape wherein the first coil has a geometrical dimension along its elongated axis which exceeds the distance between the first and second strings wherein the first coil includes an opening which extends through the interior thereof, a second wire coil wound in a first direction in an elongated oval shape wherein the second coil has a geometrical dimension along its elongated axis which exceeds the distance between the third and fourth strings wherein the second coil includes an opening which extends through the interior thereof, a third wire coil wound in a first direction in an elongated oval shape wherein the third coil has a geometrical dimension along its elongated axis which exceeds the distance between the fifth and sixth strings wherein the third coil includes an opening which extends through the interior thereof, a fourth wire coil wound in a first direction in an elongated oval shape wherein the fourth coil has a geometrical dimension along its elongated axis which exceeds the distance between the first and sixth strings wherein the first coil includes an opening which extends through the interior thereof, and wherein said first, second and third coil are positioned in a side-by-side arrangement and wherein said fourth coil encompasses said first, second and third coil, a permanent magnet assembly which is positioned in the openings of said coils with one pole positioned in a magnetic coupling relationship with the strings of the multistringed instrument and with the other pole positioned so as to be remote from the string and a circuit for electrically connecting the first coil, the second coil, the third coil and the fourth coil wherein the coil assembly applies a magnetic field across the strings which is intercepted by the vibrating strings to produce an electrical signal is shown.

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.

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.

Method, apparatus, and computer-readable media to manage undesired sound sources in microphone pickup / focus zones preferably mitigates one or more of the undesired sound source(s) in a space having a plurality of microphones and at least one desired sound source. Preferably, at least one microphone input receives plural microphone input signals from the plurality of microphones in the space. Preferably, the least one processor is coupled to the at least one microphone input and receives the plural microphone input signals. Preferably, the at least one processor determines plural micro-zones in the space. Preferably, the at least one processor determines a threshold sound field level for each micro-zone based on received plural microphone input signals that correspond to the one or more undesired sound source(s). Preferably, the at least one processor recognizes a desired sound source when received plural microphone input signals exceed one or more threshold sound field level.

The invention discloses a detection method and device for tunnel lining concrete void. In the method, first, a sound wave reflection fundamental frequency is determined on a lining concrete module, then detection points and a sound wave frequency transmit-receive pickup device are arranged on a surface of a lining concrete to be detected, Monitoring of a reflection wave after a sound wave signal goes through the lining concrete is carried out, and if the frequency changes, hollowing is formed. a sound wave reflection signal is recorded by a sound wave frequency emitting and receiving instrument, processing and analysis of change of the sound wave fundamental frequency of the detection point are carried out by a computer, and the following condition of the lining concrete at the detection point is calculated according to the change of the sound wave fundamental frequency. The method is advantaged by convenient usage, high precision and low cost.

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.

The Advanced Pickup Switch is a lever-style switch that will allow any guitarist, with a minimal amount of technical skill, to alter the pickup wiring configuration of their electric guitar for altering the tonal choices available without the need to manually hard-wire each connection. The tonal alterations are effected via rotationally and axially displaceable multi-layer printed circuit board (PCB) discs that contain pre-determined tracings for specific pickup coil configurations. These are attached to the outboard sides of the switch with a single screw, thereby allowing for complex wiring alterations with the use of a screwdriver alone. The lateral movement of the switch and corresponding axial displacement of the PCB's allows for the expansion of the number of combinations without the use of a secondary switch. A robust two-pronged resilient detent arm cooperates with gearage for providing a switch with the tactile feedback that is familiar and comfortable to guitarists worldwide.

An electric-acoustic stringed instrument has a removable, adjustable and acoustic artwork top with a decorative bridge and tailpiece; a mounting system for electric string vibration pickups that allows five degrees of freedom in placement and orientation of each pickup anyplace between the neck and bridge; a pickup switching system that provides K*(K−1) / 2 series-connected and K*(K−1) / 2 parallel-connected humbucking circuits for K matched single-coil pickups; and an on-board preamplifier and distortion circuit, running for over 100 hours on two AA cells, that provides control over second-and third-harmonic distortion. The switched pickups, and up to M=12 switched tone capacitors provide up to M*K*(K−1) tonal options, plus a linear combination of linear, near second-harmonic and near-third harmonic signals, preamp settings, and possible additional vibration sensors in or on the acoustic top.