455results about "Frequency/directions obtaining arrangements" patented technology

A method for synchronizing audio reproduction in collocated end devices is presented. Each of the devices auto-correlates using noise to determine a threshold prior to the antenna receiving an audio signal. When the devices receive a common audio signal, they provide audio outputs. Each device cross-correlates its audio output with the audio outputs of the other devices. The timing of the audio output of each device is then adjusted such that the audio outputs of all of the devices align temporally with the lagging or leading device.

Provided is a speaker, including: a diaphragm structure including first and second diaphragms, the first diaphragm is configured to push air to vibrate to generate initial sound wave, and a signal of which is modulated based on a signal within an audible sound frequency band; and a cover plate structure enclosing with the diaphragm structure to form sound-generating cavity, the cover plate structure has a sound outlet hole connecting the sound-generating cavity with outside, the initial sound wave in the sound-generating cavity is transmitted to the outside through the at least one sound outlet hole to form a sound signal, the second diaphragm and the cover plate structure generate an acoustic environmental impedance used to modulate the initial sound wave to change sound pressure of the sound signal. The speaker can modulate and output a sound signal covering the audible sound frequency band based on the acoustic environmental impedance.

The application discloses a sound box of a rotating shaft rotating type adjustable medium-high sound unit, and relates to the technical field of sound boxes.The sound box comprises a sound box body, strip-shaped sound boxes are installed on the two sides of the sound box body, a rotating shaft structure is connected to one end of the strip-shaped sound boxes, and the rotating shaft structure is connected with the upper end side wall of the sound box body.The rotating shaft structure can drive the strip-shaped sound boxes to flexibly adjust the sound emission position on the two sides of the sound box body, and a pull rod is inserted into the sound box body.The sound box is adjusted by the cooperation of the sound box body, the strip-shaped sound boxes and the rotating shaft structure, the medium-high sound emission direction is adjusted by using the physical structure, the point source sound emission is changed into bilateral distributed sound emission, the horizontal sound field coverage is greatly widened, the sound emission angle can be flexibly adjusted according to the position of the audience and the size of the scene, the clear sound quality and the stable sound field positioning can be kept in the whole area.

An electronic device according to an embodiment of this document includes: a first housing; a second housing coupled to the first housing and movable relative to the first housing; a speaker disposed in the first housing and outputting an audio signal; a flexible display disposed at least partially in the first and second housings, wherein the size of an area visually exposed by the front surface of the electronic device can be expanded according to movement of the second housing; a first conduit formed in the first housing such that the audio signal is output to the outside of the first housing; a second conduit formed at a position corresponding to the first conduit when the movement distance of the second housing is within a first range, and formed in the second housing such that the audio signal is output to the outside of the electronic device via the first conduit; a third conduit connected to the first conduit when the movement distance of the second housing is within a second range, and formed in the second housing such that the audio signal is output to the outside of the electronic device; and a processor operatively connected to the speaker and the flexible display, wherein the processor can sense the movement distance of the second housing relative to the first housing and correct the characteristics of the audio signal generated by the speaker based on the sensed movement distance. According to the various embodiments described herein, the shape of the conduit for sound emission from an audio module such as a loudspeaker changes in response to changes in the shape of the electronic device, thus providing the user with optimal acoustic service through a structure that adapts to changes in shape.

A phase plug for a compression driver includes a body having an entrance side with a front surface and an exit side with a back surface, the body disposed about a central axis. A plurality of channels are formed through the body from the entrance side to the exit side, each of the plurality of channels having an annular configuration with an entrance at the front surface, an exit at the back surface, and a path length between the entrance and the exit. The plurality of channels have unequal path lengths such that a sound signal propagating through the plurality of channels forms a convex wavefront at the exit side of the phase plug.

Acoustic output device, characterized in that it comprises: a housing in which an inner chamber is formed; a support structure that allows the housing to be held in a position on the ear without blocking the external ear canal; a first loudspeaker which is accommodated in the inner chamber, the first loudspeaker comprising a first magnet and a first diaphragm which are spaced apart from each other in a direction of vibration of the first diaphragm; and a second loudspeaker which is incorporated in the inner cannon, the second loudspeaker comprising a second magnet and a second diaphragm spaced apart from each other in a direction of vibration of the second diaphragm; wherein the first magnet and the second magnet are spaced apart from each other in the direction of oscillation of the first membrane, and wherein the first magnet and the second magnet have the same magnetic poles which are arranged opposite each other.

The invention relates to a method and an apparatus for improving the intelligibility of a group of persons engaged in conversation, each person in the group being able at times to be a speaker and at times to be a listener. The persons are situated at two or more positions P. For this purpose, a system (1) is used comprising: two or more directional microphones M which are directed towards the positions P; two or more directional loudspeakers L which are likewise directed towards the positions P; and a digital signal processor DSP which is capable of processing and forwarding acoustic signals in real time. Each microphone M continuously receives acoustic signals Ai and forwards them to the DSP. The DSP identifies, in real time, a speech signal Si1 from each acoustic signal Ai and generates therefrom a processed speech signal aSi1. The DSP transmits the processed speech signal aSi1 to one or more other loudspeakers L. The DSP detects later-arriving speech signals Si2, Si3 having the same characteristics as reflections of the speech signal Si1, and generates therefrom, in real time, processed reflected signals aSi2, aSi3, which the DSP transmits to another loudspeaker L within a predetermined time window (4) having a duration of at most 40 ms.

A method for audio processing performed by an electronic device is provided. The method includes detecting at least one of a first voice activity near a first device and a second voice activity near a second device using a voice recognition module associated with the first device, comparing the first voice activity and the second voice activity to determine whether the first voice activity and the second voice activity exceed a predetermined threshold, and outputting the at least one of the first voice activity or the second voice activity through the second device in response to determining that the first voice activity and the second voice activity exceed the predetermined threshold.

The application relates to a loudspeaker amplitude modulation method and system for acoustic impedance tube testing, wherein the method comprises the following steps: acquiring an excitation signal (a logarithmic sweep signal) of a loudspeaker arranged at one end of an acoustic impedance tube, and establishing a time-frequency correspondence relationship of the excitation signal; playing the logarithmic sweep signal with a standard amplitude through the loudspeaker and collecting a sound pressure response (a time-domain response signal) of the loudspeaker on the acoustic impedance tube; determining gain compensation parameters of corresponding frequency bands according to the amplitude deviation of each preset frequency band in the amplitude envelope of the time-domain response signal, and constructing an amplitude modulation coefficient according to the gain compensation parameters; converting the time-domain response signal into a frequency-domain signal by combining the time-frequency correspondence relationship of the logarithmic sweep signal, adjusting the amplitude distribution of the frequency-domain signal through the amplitude modulation coefficient, and applying the adjustment result to the loudspeaker for acoustic impedance tube testing. The application can effectively modulate the amplitude of the excitation signal emitted by the loudspeaker.

The invention relates to a loudspeaker arrangement (1) for stereophonic reproduction of acoustic signals, comprising a front loudspeaker unit (3) with a front radiation axis (4) that can be directed towards a target listening area, a left loudspeaker unit (6) with a left radiation axis (7) oriented in a horizontal projection plane transverse to the front radiation axis, and a right loudspeaker unit (9) with a right radiation axis (10) oriented in the horizontal projection plane transverse to the front radiation axis, wherein the front loudspeaker unit (3) and the left loudspeaker unit (6) are connected in series in a left audio channel (L) of the loudspeaker arrangement (1), and the front loudspeaker unit (3) and the right loudspeaker unit (9) are connected in series in a right audio channel (R) of the loudspeaker arrangement (1).To provide a novel and compact loudspeaker arrangement (1), it has a rear loudspeaker unit (16) with a rear radiation axis (17) directed away from the target area, wherein the rear loudspeaker unit (16) and the left loudspeaker unit (6) are connected in series in the left audio channel (L) of the loudspeaker arrangement (1), and the rear loudspeaker unit (16) and the right loudspeaker unit (9) are connected in series in the right audio channel (R) of the loudspeaker arrangement (1), and wherein the left loudspeaker unit (6), the right loudspeaker unit (9) and the rear loudspeaker unit (16) are connected with the same polarity, and the front loudspeaker unit (3) is connected with opposite polarity to the left loudspeaker unit (6), the right loudspeaker unit (9) and the rear loudspeaker unit (16).

The present invention stably suppresses sound leakage in a backward direction even when no sound absorbing material is used. A first speaker unit is located in an enclosure formed by using a prescribed material, and a second speaker unit is located above the first speaker unit. The first speaker unit radiates a first sound toward the front side of the enclosure. The second speaker unit radiates a second sound toward the front side. The enclosure is provided with: a first sound hole part that emits a third sound which is 180 degrees out of phase with the first sound and emitted toward the back surface side due to emission of the first sound; and a second sound hole part for emitting a fourth sound which is 180 degrees out of phase with the second sound and emitted toward the back surface side due to emission of the second sound. The first sound hole part is provided on at least one of the front surface, the lower surface, and the side surface. The second sound hole is provided on at least one of the front surface, the upper surface, and the side surface.

This application provides a voice controller and a voice control system. The voice controller includes: a speaker assembly having at least two sound outlets; and a controller housing housing the speaker assembly, including at least two sound outlets corresponding to the at least two sound outlets, the at least two sound outlets being disposed on different side walls of the controller housing. By distributing sound outlets on different side walls of the voice controller, even if one side of the voice controller's sound outlet is blocked, announcements can still be made through the sound outlets on other sides, thus ensuring the voice controller's announcement effect and improving the user experience.

This application relates to a conference screen processing method, device, storage medium, and system. It involves acquiring multiple audio data streams using a data acquisition device, determining the sound source location information based on the first audio data stream where the human voice energy exceeds a first threshold, acquiring the image corresponding to the sound source location information, identifying the speaker in the image whose human voice energy meets preset conditions, and obtaining the facial deflection angle between a preset position representing the speaker's face and the data acquisition device. The speaker's image and facial deflection angle are then sent to a data processing device. The data processing device can display the image of the speaker with the smallest facial deflection angle using a display device. This eliminates the need for the data processing device to expend significant computing resources for image recognition, reducing its computational resource consumption and improving the efficiency of displaying the speaker's face at the conference.

To provide a speaker assembly with superior acoustic performance. [Solution] The speaker assembly 3 includes a housing assembly, a bone conduction speaker 40, and an air conduction speaker 50. The housing assembly includes a main housing 31 for forming a housing space 300 with one end open. The bone conduction speaker includes a core housing 41 and a transducer device. The core housing is rotatably supported by the main housing and a portion of it is located within the housing space. The core housing is provided with a mounting space 410, the volume of which is smaller than the volume of the housing space. The transducer device is installed within the mounting space. The core housing is provided with a sound guide hole 4106 that communicates with the mounting space.

The invention relates to a hearing device (1) comprising a loudspeaker (6) with a loudspeaker diaphragm (24) for generating acoustic signals, a drive acting on the loudspeaker diaphragm (24), and a loudspeaker housing in which the drive and the loudspeaker diaphragm (24) are received; a housing (2) enclosing an interior space; and a loudspeaker box (12) arranged in the interior space, in which the loudspeaker (6) is fluid-tightly sealed from the interior space, and which has a sound outlet opening (22) coupled to a sound conductor (18, 20) leading from the housing (2). The loudspeaker (6) is arranged in the loudspeaker box (12) without a sound channel element arranged within the loudspeaker box (12) that couples the loudspeaker (6) to the sound outlet opening (22).

To provide a new structure that solves the phenomenon of "abnormal noise generation" at high input levels in a speaker device equipped with a passive radiator in a single housing, and to provide an associated improvement in acoustic performance related to the structure.SOLUTION: A passive radiator is horizontally installed in a housing 5 of a speaker device 10 having a speaker unit 6, and a phase-inverting bass reflex duct 1 is formed at the center of a diaphragm 2 of the passive radiator so as to be aligned with a vertical central axis of the diaphragm.SELECTED DRAWING: Figure 3

An ear tip assembly structure includes a housing, a sound guide tube, and an elastic support. The sound guide tube is disposed inside the housing and extends out of the housing. The elastic support is disposed inside the sound guide tube and includes a snap fastener and an elastic arm. The elastic arm is connected to the snap fastener and is bent in a horizontal direction. The snap fastener extends out of the sound guide tube to engage with an ear tip.

Systems and techniques are provided for processing audio data. For example, a process can include determining audio context information corresponding to a multi-band bone conduction microphone (BCM), wherein the audio context information is indicative of at least one of noise information or voice information. A process can include generating a control signal indicative of a resonance configuration for one or more resonators of a plurality of resonators included in the multi-band BCM, wherein the resonance configuration is based on the audio context information and corresponds to one or more frequency response adjustments. A process can include transmitting the control signal to the multi-band BCM, wherein the control signal is configured to cause the multi-band BCM to generate a BCM output signal using the resonance configuration.

The disclosure relates to the technical field of sound-electricity conversion, and discloses a speaker assembly, a seat, and an electronic device, which can realize directional sound emission of audio and has a simple structure. The speaker assembly includes a mounting body, a plurality of dipole speaker units, and a control unit. The plurality of dipole speaker units are disposed inside the mounting body and are configured to form a dipole sound source to achieve directional sound emission. The control unit is electrically connected with each dipole speaker unit of the plurality of dipole speaker units and configured to control at least one control parameter for the dipole speaker unit of the plurality of dipole speaker units to adjust a sound field of the dipole speaker unit in a preset region.

The present disclosure provides a bone conduction speaker, comprising: a vibration assembly, the vibration assembly including a vibration element and a vibration housing, the vibration element being used to convert an electrical signal into a mechanical vibration, the vibration housing being used to contact with a face of a user and to transmit the mechanical vibration to the user in a bone conduction manner to produce a sound; and a resonance assembly including a first elastic element and a mass element, the mass element being connected to the vibration assembly by the first elastic element, wherein the vibration assembly causes the resonance assembly to vibrate, the vibration of the resonance assembly weakening a vibration amplitude of the vibration housing.

A system and method for removing unwanted vibrational noise is provided. The system can detect, by one or more microphones of the system, at least one audio signal that includes audio content output from at least one speaker and audio data from one or more other sources or caused by the one or more other sources. The other audio data can include determined undesired vibrational noise that causes distortion of the at least one audio signal. The system can determine, by at least one sensor of the system, a subset of the other audio data based in part on determining at least one motion of a user of the system or motion of one or more other users. The system can remove or reduce the undesired vibrational noise from the at least one audio signal to enable output of sound associated with the modification of the at least one audio signal.

The utility model discloses a kind of cash collection broadcast sound boxes, including main body, PCB board is arranged in the main body, loudspeaker, light-emitting diode and battery, the detachable support seat of main body bottom is provided with;The main body includes mutually connected front shell and rear shell;The front shell front part is equipped with the first groove body recessed inward, the second groove body recessed in the first groove body bottom and the third groove body recessed in the second groove body bottom;The first groove body is fixed with transparent plate, the sidewall of the second groove body is jointly constituted with the transparent plate and the insertion slot structure that can be inserted by sheet object from upper opening;The third groove body is fixed with electronic display screen;The rear shell bottom is provided with the assembly structure connected with the support seat.The utility model provides a kind of cash collection broadcast equipment with screen multiple protection, emergency two-dimensional code switching, quick disassembly and maintenance and humanized layout, to improve the reliability and convenience used by merchant.

The application discloses sound-absorbing material, sound-emitting device and electronic equipment. The sound-absorbing material comprises: a plurality of graphene powders, each of which comprises a plurality of layer structures arranged in a stack, the number of the layer structures is in a range of 2 to 100 layers, each of the layer structures comprises a plurality of hexagonal rings formed by six carbon atoms, and a defect hole formed by more than six carbon atoms is formed on the layer structure, and the average pore size of the defect hole is in a range of 0.5 nm to 10 nm; wherein the hexagonal rings form micropores for air flow, and the defect hole and the gap between the layer structures form micropores and / or mesopores for air flow; and an adhesive used for bonding the plurality of graphene powders to form the sound-absorbing material. The sound-absorbing material can improve the resonance frequency of an acoustic device.

To improve the sense of direction in audio for 3D content. [Solution] The speaker arrangement structure according to the present invention is a speaker arrangement structure that arranges speakers around a user, and comprises a first speaker group and a second speaker group. The first speaker group is arranged at the vertices of a regular polyhedron located on a sphere centered on the user's head. The second speaker group is arranged on the sphere at equal intervals from adjacent vertices of the regular polyhedron on which the first speaker group is arranged.

An ultrasonic transducer includes a diaphragm, one or more frame bodies extending in a longitudinal direction and bonded to the diaphragm, and one or more ultrasonic vibrators attached to the respective one or more frame bodies and facing the diaphragm with a space in between. The diaphragm is structured to resonate and vibrate in a direction orthogonal to the diaphragm in a phase opposite to a phase of the one or more ultrasonic vibrators. A dimension in the longitudinal direction inside the one or more frame bodies is larger than a dimension in a lateral direction orthogonal to the longitudinal direction inside the one or more frame bodies. One or more cavities cause an external space on an opposite side from the one or more frame bodies with respect to the diaphragm and an internal space inside the one or more frame bodies to communicate with each other.