126results about "Multiple transducers" patented technology

Disclosed herein is a multifunction lighting and audio apparatus. The apparatus includes a color-music file storage for storing color-music files; an output control unit for controlling the color-music data stored in the color-music file storage so as to separate the color-music data into music signals and color signals, and for producing the separated music signals and color signals; a lighting unit for producing color-lighting based on a color-lighting control signal inputted through the output control unit; an audio unit for producing music based on a music control signal inputted through the output control unit; and an operating unit for operating the above components respectively. It is possible to embody the optimal lighting and audio in which the music and lighting match each other, and to simplify an overall system structure, and decrease the system structure costs without requiring the conventional music parameter detection unit, etc.

The present embodiment relates to a double-faced display device generating sound by directly vibrating a display panel and includes: a first display panel and a second display panel disposed at the front and rear surface thereof, respectively; a single sound generating actuator connected to the first display panel and the second display panel to simultaneously vibrate the first display panel and the second display panel and thus generate sound; and a support part configured to support the sound generating actuator, the first display panel, and the second display panel. The present embodiment does not require a separate speaker and thus can achieve a thin or slim display device, and can improve the localization or the quality of sound output in opposite directions in the double-faced display device.

An acoustic system has an acoustic sensor and a processing circuit. The acoustic sensor includes a base, a microphone having a microphone diaphragm supported by the base, and a hot-wire anemometer having a set of hot-wire extending members supported by the base. The set of hot-wire extending members defines a plane which is substantially parallel to the microphone diaphragm. The processing circuit receives a sound and wind pressure signal from the microphone and a wind velocity signal from the hot-wire anemometer, and provides an output signal based on the sound and wind pressure signal from the microphone and the wind velocity signal from the hot-wire anemometer (e.g., accurate sound with wind noise removed). The configuration of the hot-wire extending members defining a plane which is substantially parallel to the microphone diaphragm can be easily implemented in a MEMS device making the configuration suitable for miniaturized applications.

A coaxial speaker assembly (10) with reduced sound distortion, sound time delay, and polar response distortion. The coaxial speaker assembly (10) includes a high-frequency speaker system (16) mounted coaxially with and fitting within a lower-frequency speaker system (14). A baffle (50) is secured to a diaphragm (48) of the high-frequency speaker system (16). A step-down ledge (52) is circumferentially positioned adjacent to the baffle (50) and extends outwardly therefrom. A portion of the sound waves emanating from the high-frequency diaphragm (48) are reflected off the step-down ledge (52).

Provided is a sound output apparatus that is used by being worn in the vicinity of the ear of a listener and is capable of outputting sound over a wide frequency band.The sound output apparatus includes: a first sound generation unit configured to generate a low frequency band; a sound guiding unit with a hollow structure, having one end coupled to the first sound generation unit, and the other end as a sound emission unit including an open end; and a second sound generation unit that is disposed at a place closer to the sound emission unit than the first sound generation unit and generates a high frequency band. It is preferable that the sound guiding unit have a joint unit that takes in the sound from the second sound generation unit and a section from the joint unit to the sound emission unit have a low impedance.

The invention provides an acoustic actuator, including an acoustic stress wave generator and an actuation material operatively positioned relative to the acoustic stress wave generator for delivery of acoustic stress waves from the generator to the actuation material.

The invention discloses a loudspeaker comprising a frame and a magnet, wherein the magnet is integrally arranged on the frame and positioned in the frame, a vibrating diaphragm and a voice coil are connected and arranged on the frame, the vibrating diaphragm comprises an arch top and a folding ring, a first piezoelectric body is attached to the surface layer of the arch top, and the vibrating diaphragm and the first piezoelectric body are driven by a drive circuit to jointly form coaxial concurrent loudspeaking effect. The invention also discloses an electronic device. After being used, the loudspeaker overcomes the defect that the traditional moving-coil type loudspeaker is easy to generate partition vibration at high frequency and realizes broadband playback, and otherwise, because the piezoelectric body has the advantages of small volume, no magnetic field interference and low power consumption, the invention is very suitable for a mobile telephone or other portable electronic devices.

A vibratory apparatus including a lever arm apparatus including a living hinge, wherein the vibratory apparatus is configured such that at least a portion of the lever arm moves about the living hinge when the vibratory apparatus is generating vibrations.

An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.

This invention relates to acoustic drivers with stationary and moving coils. Time varying signals are applied to the moving and stationary coils to control the movement of a diaphragm, which produces audible sound. The time varying signals correspond to an input audio signal such that the sound corresponds to the input audio signal. Some of the described embodiments include multiple moving coils, multiple stationary coils or both. Some embodiments include feedback for adjusting one or more of the signals based on a characteristic of the acoustic driver. Various compensation and other features of the invention are also described in relation to various embodiments.

The invention discloses a speaker device, which comprises a vibration system, a magnetic circuit system and an auxiliary system for accommodating and fixing the magnetic circuit system and the vibration system. The vibration system comprises a centring disk. The centring disk comprises a first fixing portion, a second fixing portion disposed in the first fixing portion, and a connecting arm connecting the first fixing portion and the second fixing portion. The center position of the second fixing portion is provided with a piezoelectric patch, the centring disk is provided with a first bonding pad corresponding to the piezoelectric patch, and the piezoelectric patch is connected electrically with the first bonding pad. The second fixing portion is provided with an antenna circuit. According to the invention, a signal produced by the piezoelectric patch can effectively improve the medium-high frequency effects of the speaker device and the acoustic performance of the speaker device; the antenna circuit combines an antenna device with the speaker device integrally; and the speaker device has the advantages of excellent acoustic performance, high integrated design and multiple functions.

The present invention relates to a compact and robust hybrid receiver comprising a moving coil type receiver and one or more moving armature type receivers, wherein the moving coil type receiver and the moving armature type receiver, at least partly, share a common magnetic circuit.

The present disclosure provides a sound output apparatus including a first sound output unit, a second sound output unit spaced a predetermined distance from the first sound output unit, at least one opening defined in the second sound output unit, and a housing for accommodating at least one of the first and second sound output units. Here, the housing has an external diameter that is 100% to 130% of a diameter of the second sound output unit.

A device has a laser unit, which includes: a top-side p-type DBR region; which is on top of and in direct touch with an active region; which is on top of and in direct touch with a bottom-side n-type Distributed Bragg Reflector (DBR) region; which is on top of a n-type substrate. The laser unit further includes a voltage measurement anode touching or being in proximity to a top surface of the active region; and a voltage measurement cathode touching or being in proximity to a bottom surface of the active region. The voltage between the voltage measurement anode and the voltage measurement cathode is directly measured; and is utilized for determining characteristics of a laser self-mix signal of the laser unit, without having or using a monitor photo-diode.

The invention discloses a micro-sound detection analysis device and an array audio signal processing method based on the same, belongs to the field of micro-sound detection, and solves problems that a conventional capacitive-type micro-sound detector is higher in lower limit of the sound intensity detection, and the recognition and positioning of a sound source detected by the micro-sound detector cannot be carries out at the same time based on a conventional audio signal processing method. The device employs a micro-sound sensing unit based on a graphene film to sense sound pressure. The method comprises the steps: separating noise signal in an audio signal, extracting the audio feature information and sound source position information in the audio signal, comparing the audio signal comprising the audio feature information and sound source position information with a plurality of target sound sources stored in the signal storage unit, judging whether there is a matched target source or not, and carrying the positioning of the sound source according to the sound source position information. The device is suitable for the micro-sound detection and the recognition and positioning of the detected sound source.

The invention discloses a real-time voice signal receiving device based on a self-mixing interference measuring method. The real-time voice signal receiving device is characterized by being provided with a cylindrical casing, a sound film and a semiconductor laser, wherein a closed cavity is formed inside the cylindrical casing; the cylindrical casing is fixedly connected with a measured object; the sound film is positioned on the cross section of the closed cavity of the cylindrical casing and is supported on a positioned step connected with the inner side wall of the cylindrical casing at the periphery; the semiconductor laser is fixedly arranged at the position coaxial with the sound film in the closed cavity of the cylindrical casing by a rigid bracket; the semiconductor laser is used for transmitting an optical signal to the sound film and receiving a feedback optical signal from the sound film; a photoelectric detector is used as a photoelectric signal conversion unit; and a signal processing unit is used for receiving an output signal of the photoelectric detector and outputting a sound detection signal. According to the real-time voice signal receiving device disclosed by the invention, the sound signal is sensed by using the self-mixing effect of the semiconductor laser, electromagnetic interference is avoided and an outside sound signal can be received at high sensitivity and high precision and in wide range.

A hybrid actuator (100A) includes a magnetostrictive actuator (110) having a magnetostrictive element (111), and a moving-coil actuator (130) including a movable portion (132) having an outer periphery to which voice coils (131a), (131b) are attached. The actuator (110) is fixed to the movable portion (132) of the actuator (130) so that the direction of displacement output of a drive rod (113) becomes the same as the displacement direction of this movable portion. Since the actuator (110) is fixed to the movable portion (132) of the actuator (130), together with a displacement output in response to a high-frequency-range audio signal, which is obtained by the actuator (110), a displacement output in response to a low-frequency-range audio signal, which is obtained by the actuator (130), is also obtained at a tip of the drive rod (113). By abutting the tip of the drive rod (113) against an acoustic diaphragm, a wide band audio output can be obtained.

To obtain a composite type microphone, the microphone preventing an increase in size and weight and thereby improving the freedom for installation and handling while keeping the phases of signals output from respective microphone units the same. A composite type microphone that incorporates microphone units of different electroacoustic conversion methods into a common microphone body is provided. Here, in a front acoustic terminal portion of a first microphone unit based on one electroacoustic conversion method, a second microphone unit based on another electroacoustic conversion method is disposed, and in the front acoustic terminal portion of the first microphone unit, an air that vibrates in the same phase with that of a vibrating plate of the first microphone unit exists, and within the air that vibrates in the same phase with that of the vibrating plate of the first microphone unit, the second microphone unit is disposed.

The invention discloses an electroacoustic conversion device, comprising a vibration system and a magnetic circuit system with a magnetic gap. The vibration system comprises a vibration membrane, a voice coil combined below the vibration membrane and suspended in the magnetic gap, a piezoelectric plate combined at one side of the vibration membrane, a first frequency dividing circuit connected with the voice coil, and a second frequency dividing circuit connected with the piezoelectric plate. The first frequency dividing circuit performs frequency dividing on an external input first path sound signal so as to obtain a low frequency signal and outputs the low frequency signal to the voice coil. The second frequency dividing circuit performs frequency dividing on an external input second path sound signal so as to obtain a high frequency signal to drive the piezoelectric plate. The electroacoustic conversion device has both a moving coil sounding structure and a piezoelectric sounding structure, and has two frequency dividing circuits; when a high frequency signal is input, the piezoelectric plate drives the vibration membrane to vibrate to give out sound; when a low frequency signal is input, the voice coil, under the action of a magnetic field, drives the vibration membrane to vibrate to give out sound, so that a super wideband electroacoustic conversion device with good performance is realized.

A laser-based device or sensor includes: a first laser transmitter having a first self-mix carrier frequency; a second laser transmitter having a second, different, self-mix carrier frequency; a first monitor photodiode to receive a first optical signal from the first laser transmitter, and to output a first electric signal; a second monitor photodiode to receive a first optical signal from the second laser transmitter, and to output a second electric signal; an electric connection to connect together the first electric signal and the second electric signal, forming a combined electric signal; a single laser receiver to receive the combined electric signal and to generate from it a spectrum that corresponds to both (i) optical feedback of the first laser transmitter, and (ii) optical feedback of the second laser transmitter. Alternatively, a single monitor photodiode is used, receiving optical signals from multiple laser transmitters, and outputting a single electric signal to a single laser receiver.

A vibratory apparatus including a lever arm apparatus including a living hinge, wherein the vibratory apparatus is configured such that at least a portion of the lever arm moves about the living hinge when the vibratory apparatus is generating vibrations.

The present invention discloses a hybrid electrostatic headphone module, with the hybrid electrostatic headphone module disposed in the interior of a left and a right ear cup of a stereo headphones. The hybrid electrostatic headphone module is assembled as a single unit from a traditional moving coil type headphone unit and an electret headphone unit (E-STAT), which are respectively responsible for medium-low frequency bands and medium-high frequency bands. A frequency divider assembled from a frequency division capacitance and a drive transformer divides a complete signal into medium-high frequency and medium-low frequency bands, which are then respectively supplied to high and low frequency sound speakers for output therefrom.

The invention provides a piezoelectric type and capacitive type combined MEMS microphone. The MEMS microphone comprises a base with a back cavity and a capacitor system arranged on the base. The capacitor system comprises a backboard and a vibrating diaphragm. The back plate and the vibrating diaphragm are oppositely arranged at an interval to form a first sound cavity; a piezoelectric diaphragm structure is also arranged between the capacitor system and the base; a second sound cavity is formed between the capacitance system and the piezoelectric diaphragm structure; the second vocal cavity is at least communicated with the first vocal cavity or the back cavity, and the piezoelectric type and capacitive type combined MEMS microphone can output two groups of electric signals, including a group of electric signals output by a capacitive system and a group of electric signals output by a piezoelectric diaphragm structure, so that the sensitivity of the microphone can be improved.