18results about How to "Improve sound performance" patented technology

The invention introduces an unlimited multi-terminal connection Bluetooth audio system based on a broadcast technology, and aims to break through the limitation of a traditional Bluetooth audio system on the equipment connection number and tone quality transmission. By utilizing the technology, the system supports seamless connection with an infinite number of playing terminals, the application range is greatly expanded, and the connection flexibility is improved. The LC3 audio decoding technology integrated in the system significantly improves the quality and efficiency of audio transmission, and ensures excellent auditory experience. Besides, the equipped digital power amplifier and the Bluetooth main control chip allow a user to flexibly process and optimize audio output of each channel through an advanced frequency division control technology, and support independent or combined sound channel output setting. The design of the system not only adapts to household and commercial environments, but also can be widely applied to scenes such as public speech and multi-room music playing, the functionality and operation convenience of the audio system are greatly improved, and the new possibility of the Bluetooth audio technology in multiple scenes is developed.

A full-range diaphragm with a three-fold loop and dual voice coils includes a diaphragm body and an inner voice coil, an outer voice coil, an inner support frame, and an outer support frame disposed on the inner side of the diaphragm body. The inner support frame, inner voice coil, outer voice coil, and outer support frame are arranged sequentially from the inside to the outside on the inner side of the diaphragm body. The diaphragm body includes an inner loop, a middle loop, and an outer loop arranged sequentially from the inside to the outside, with the cross-sectional dimensions of the inner loop, middle loop, and outer loop increasing sequentially. This invention, by setting a three-fold loop structure from the inside to the outside, and with the height of the three loops gradually increasing from the inside to the outside, combined with the support stiffness of the inner and outer sides of the diaphragm body, enables the three loops to not only achieve precise frequency band coverage when vibrating independently, but also to achieve full-range coordination during vibration. It has strong practicality and significant potential for widespread application.

The utility model discloses a riding earphone with a noise reduction function. The riding earphone comprises a first shell, a microphone, a first circuit board, a noise reduction sponge, a loudspeaker, an ear hanging sleeve, a second shell and a first battery, a sound receiving cavity is formed in the side wall of the first shell, the microphone is arranged in the sound receiving cavity, and the sound receiving cavity is filled with the noise reduction sponge so as to cover the microphone; the first battery is arranged in the second shell, and the first battery is connected with the first circuit board through a connecting wire; and the ear hanging sleeve is coated on the connecting wire. According to the utility model, the microphone can collect sound information sent by a user, and the noise reduction sponge is filled in the sound receiving cavity and covers the microphone, so that the noise reduction sponge can absorb and isolate external environment noise, thereby reducing the introduction of interference sound such as wind noise, effectively improving the definition and accuracy of the sound collected by the microphone, and improving the user experience. And the user can be ensured to clearly communicate in the riding state.

The present invention relates to a vehicle window comprising: – a glass sheet (4) or a glass assembly; – a plastic material component (5) partially covering the glass sheet or glass assembly; – at least one fixing system for fixing an audio exciter mounted on the glass sheet or glass assembly, the fixing system comprising a base and an attachment portion (3), the base of the fixing system being connected to the plastic material component (5); and – at least one audio exciter fixed to the attachment portion (3) of the fixing system. The invention also relates to a method for manufacturing such a window.

The invention provides a support assembly, a vehicle glass assembly and a vehicle, and relates to the technical field of automobile spare parts, the support assembly comprises a support body and a sound production module, the support body comprises a substrate, a fixed seat arranged back to vehicle glass and a bonding surface arranged facing the vehicle glass, the fixed seat is arranged on the substrate and is provided with a first connecting part, and the bonding surface is provided with a second connecting part; the sound production module is connected to the first connecting part. The sound production module can be integrated to the support body, space resources near the windshield are fully utilized, occupation of other areas in the automobile is avoided, the sound effect is improved, it is ensured that the original functions of the support body and the automobile driving sight are not affected, and the driving safety of the automobile is improved. The space utilization efficiency of the support body is improved, and the layout and performance of the vehicle-mounted sound system are optimized.

The invention relates to the technical field of loudspeakers, in particular to a miniature loudspeaker support of a split structure. According to the miniature loudspeaker support, the upper support, the lower support and the damper assembly are sequentially aligned and matched, so that the assembly process is simplified, and the production efficiency is improved. And the middle ring of the damper assembly is accurately aligned with the plane of the lower bracket, so that the assembly is more convenient. According to the split structure design, the damper assembly is not easy to loosen in the long-term use process, the service life of the loudspeaker support is prolonged, and the maintenance cost is reduced. Through the integrated design of the damper assembly, sound distortion caused by multi-component assembly is reduced, and the sound quality performance of the loudspeaker is improved. The damper assembly can be assembled at a time, and compared with a traditional design that a plurality of dampers need to be assembled respectively, the efficiency of a production line is greatly improved, and the production cost is reduced.

The invention particularly relates to a preparation method of a piezoelectric MEMS intelligent loudspeaker. The preparation method comprises the following steps: preliminarily calculating the vibration frequency of a film by using a theoretical formula of the vibration frequency of the film according to a target frequency range; carrying out analogue simulation by using finite element analysis software, and predicting the resonant frequency of each vibrating diaphragm to determine each layer of material; selecting a piezoelectric material; selecting a substrate material; sputtering a first electrode material on the substrate, and etching to form a required electrode pattern; depositing a piezoelectric layer material to ensure uniform thickness; sputtering a second electrode material on the piezoelectric layer, and etching to form a required electrode pattern; testing the actual performance frequency of the loudspeaker; adjusting the thickness or the shape of the piezoelectric layer according to a test result; adjusting the thickness or the shape of the piezoelectric layer by adopting a dynamic algorithm; re-depositing the piezoelectric layer and adjusting the piezoelectric layer; and the resonant frequencies of all the vibrating diaphragms are within the target range.

The utility model discloses a combination type sound equipment, which is characterized by the following technical scheme: a shell is provided, a rotating shaft is rotatably connected in the shell, a threaded rod is rotatably connected in the rotating shaft, a fixed ring is fixedly connected to the top of the threaded rod, a ratchet wheel is arranged on the upper end of the fixed ring, a knob is fixedly connected to the upper end of the threaded rod, a linkage column is threadedly connected to the bottom of the threaded rod, a brake ring is fixedly connected to the lower end of the linkage column, a first quick-connection module is fixedly connected to the outer side of the rotating shaft at the right end of the shell, a clamping block is fixedly connected to the right end of the first quick-connection module, a stop block is slidably connected in the shell, and a return spring is fixedly connected in the stop block. Through the design cooperation of the rotating shaft and the first quick-connection module, one group of the same sound equipment can be conveniently spliced, the flexibility and adaptability of sound field construction are improved, and meanwhile, the user is allowed to quickly adjust the sound equipment layout according to the site form and acoustic requirements.

The invention relates to a moving coil and flat plate combined earphone. A moving coil loudspeaker is used as a bass unit, and a flat plate loudspeaker is used as a mid-high pitch unit; the axial directions of the flat loudspeaker and the moving coil loudspeaker are arranged to be not the same straight line, and preferably, the axial directions of the flat loudspeaker and the moving coil loudspeaker are vertical, so that acoustic interference between the two driving units is effectively reduced, and the sound definition and the positioning accuracy are improved. By installing the sound absorbing material in the shell, resonance and distortion caused by internal sound wave reflection are remarkably reduced, and the overall sound quality is improved. The arrangement of the active frequency divider and the frequency division regulator ensures the smooth transition between the flat horn and the moving coil horn, and realizes accurate frequency division. The open-type moving coil loudspeaker not only improves the low-frequency response, but also improves the overall comfort level. According to the invention, excellent sound performance and comfortable wearing experience are realized, and the earphone is suitable for application scenes of music making, monitoring, high-quality audio appreciation and the like.

The utility model discloses a lightweight double-diaphragm wireless interconnection sound box, which can ensure that audio streams can be efficiently and stably transmitted in a complex environment through a wireless communication unit, delay and lagging are reduced, user experience is improved, an audio processing unit accurately restores high and low frequency components of audio signals, tone quality is optimized, and sound quality is improved. And the main control unit generates a double-diaphragm driving control signal according to the decoded audio signal, realizes dynamic frequency division driving and enhances the tone quality layering sense by accurately controlling the vibration of the high-frequency and low-frequency diaphragms, and is also responsible for dynamically adjusting the output voltage of the power supply unit, optimizing the energy consumption and prolonging the endurance time according to the load demand. The double-diaphragm driving unit adopts a high-frequency and low-frequency diaphragm separation design, interference is avoided, high-fidelity audio restoration is realized, and the power supply unit outputs stable voltage to a double-diaphragm load according to an instruction of the main control unit, so that stable performance of the sound box is ensured.

The present invention is applicable to the technical field of audio power amplifiers, and provides a class D audio power amplifier and a signal compression method. The class D audio power amplifier includes: a controllable limiter, a class D amplifier, a first filter, a second filter, and a logic control module. In the present application, when an abnormal signal appears in the filtered signal, the logic control module compresses the filtered signal to reduce the amplitude of the abnormal signal in the filtered signal, that is, the compression processing of the abnormal signal effectively reduces the compression and distortion phenomenon of the class D audio power amplifier when processing low-frequency signals, improves the sound quality performance of the audio amplifier, and the audio power amplifier device is smaller in size and lighter in weight, which is easy to carry and install. In addition, the circuit structure of the present application has high energy conversion efficiency, which can effectively reduce the energy consumption of the power amplifier device and reduce the waste of electric energy, while reducing heat generation, reducing heat dissipation requirements, and improving the stability and life of the equipment.

This utility model relates to the technical field of headphone decorative parts, and discloses a snap-on replaceable headphone decorative part, including an elastic ear hook, a front cavity of the speaker, a rear cavity of the speaker, and a decorative part. The front cavity and the rear cavity of the speaker are connected to form the headphone body. The decorative part is connected to the front cavity or the rear cavity of the speaker via a detachable snap-on structure. The detachable snap-on structure includes a snap plate disposed on the inner side of the decorative part and a snap groove formed on the outer wall of the front cavity or the rear cavity of the speaker. The snap plate and the snap groove are engaged. The rear cavity of the speaker has a vent hole, and the front end of the front cavity of the speaker has a sound outlet hole. The elastic ear hook is disposed on the outer side of the rear cavity of the speaker. In this utility model, the elastic metal snap plate on the inner side of the decorative part engages with the L-shaped snap groove on the outer wall of the front cavity or the rear cavity of the speaker to form a detachable snap-on structure, realizing the quick replacement of the decorative part, meeting the user's personalized needs for the appearance of the headphone, and solving the problem that existing decorative parts cannot be removed and replaced.

The invention relates to a virtual bass enhancement method, which comprises the following steps: preprocessing an input audio signal, the preprocessing comprising sampling rate conversion, de-noising processing and volume standardization; extracting low-frequency components in the input audio signal through a low-pass filter; performing time domain analysis on the extracted low-frequency components, and generating odd harmonics and even harmonics of the low-frequency components by using a harmonic generation algorithm; performing low-frequency component identification on the preprocessed audio signal by using a support vector machine model so as to distinguish a low-frequency part needing to be enhanced; extracting a high-frequency component in the input audio signal through a high-pass filter; and carrying out superposition synthesis on the generated harmonic signal, the identified low-frequency component and the extracted high-frequency component according to a preset proportion to obtain an enhanced low-frequency audio output signal. The method can solve the problems that multiple virtual bass algorithms exist in the market, but most of the virtual bass algorithms are high in processing complexity, poor in bass reduction effect or high in cost.

The utility model discloses a kind of coil loudspeakers. The loudspeaker is sequentially sleeved and concentrically arranged from inside to outside by dome tweeter, annular midrange loudspeaker, annular woofer, and three-way unit;Among them, the tweeter adopts dome diaphragm, the midrange loudspeaker adopts first annular diaphragm, and the woofer adopts second annular diaphragm;The three-way unit is used for dividing audio signal into high-frequency band, mid-frequency band and low-frequency band, and inputting into corresponding loudspeaker respectively. The utility model adopts three loudspeaker units of high-frequency, mid-frequency and low-frequency, and is concentrically sleeved from inside to outside. The tweeter unit selects dome diaphragm, and directivity is accurate and high-frequency extension performance is superior. The midrange unit is equipped with annular diaphragm, effectively suppresses segmented vibration, and ensures the intelligibility and purity of mid-frequency tone color. The woofer unit also adopts annular diaphragm, which can maximize the effective radiation area in limited space.

The invention provides a cross-platform conversation and recording method and device, and relates to the technical field of multi-platform recording. The method comprises the following steps: acquiring a current call scene of a user in response to a call operation request of a contact on a first terminal device; automatically switching the call recording to a second terminal device corresponding to the current call scene according to the current call scene; obtaining first audio data corresponding to the second terminal equipment, and performing preprocessing operation on the first audio data to obtain preprocessed second audio data; and sending the second audio data to a preset storage device through a serial port protocol, so that the user can carry out call recording. According to the method and the device, the problems that the user needs to manually switch the output source and the input source when using different audio devices, the office burden of the user can be increased, in addition, a large number of voice communication users have recording requirements for conferences or conversations, and multi-terminal device conversations or conference recording cannot be effectively carried out in time are solved.

This utility model relates to a fully enclosed loudspeaker structure, comprising: a frame, the top of which is a closed conical structure; a set of wire connection terminals are provided on the side wall of the conical structure, the wire connection terminals being connected to external electronic wires; a magnetic circuit, located on the outer side of the top of the frame; a voice coil, embedded in the inner side of the frame, the voice coil wire being welded and fixed to the wire connection terminals, the magnetic field generated by the voice coil after being energized cooperating with the magnetic circuit; a spider, located on the outer side of the voice coil, used to support the voice coil and provide tension; a diaphragm, located on the inner side of the frame and connected to the voice coil, the diaphragm vibrating due to the electromagnetic action of the voice coil; vent holes on the diaphragm; and a waterproof and breathable membrane attached to the vent holes of the diaphragm. The closed conical structure of the frame top of this utility model, by providing vent holes on the diaphragm and attaching a waterproof and breathable membrane, effectively avoids the limitation of conventional loudspeakers being unable to waterproof due to air leakage, and solves the problem of internal air pressure imbalance in customer structures.

The invention relates to the field of loudspeakers, in particular to an inductance type loudspeaker and audio equipment, which comprises a loudspeaker bracket, drum paper, a dustproof cap, a voice coil, a damper, a wiring terminal, a lead and a magnetic field driving device. Wherein the cone paper is attached to the loudspeaker support, the magnetic field driving device is assembled at the bottom of the loudspeaker support, the damper is fixed on the inner side of the loudspeaker support, the upper portion of the voice coil is fixedly connected with the cone paper and the damper, the magnetic field driving device comprises an inductance device, a washer and an iron body, the washer and the inductance device are assembled with the iron body, and the damper is fixed on the inner side of the loudspeaker support. Therefore, the magnetic field drive of the loudspeaker is formed. And a winding part at the lower part of the voice coil is arranged in a magnetic field driving gap of the magnetic field driver. According to the inductance type loudspeaker, the inductance device is used for generating magnetic field force instead of a magnet which a traditional electrodynamic loudspeaker depends on, so that the problem that the traditional loudspeaker depends on the magnet can be solved, and the requirement for the magnet is reduced.

The present invention relates to a method, device and storage medium for intelligently improving the sound quality of a Bluetooth speaker, and relates to the field of data processing technology, including: obtaining the layout space of the inverted hole and the layout space of the reinforcing rib, generating multiple first speaker design schemes, and adjusting to obtain multiple second speaker design schemes; performing low-frequency response analysis, vibration analysis and inverted hole airflow disturbance analysis of the Bluetooth speaker, obtaining multiple first sound quality fitness and multiple second sound quality fitness, configuring multiple scheme cross-update probabilities, configuring reinforcing rib update probabilities according to the results of the inverted hole airflow disturbance analysis, performing random selection cross-update, and obtaining multiple third speaker design schemes; continuing to perform iterative optimization, obtaining the optimal speaker design scheme, and performing sound quality improvement design and manufacturing on the Bluetooth speaker. The present invention achieves the technical effect of improving the low-frequency performance of the Bluetooth speaker, reducing the impact of vibration and eliminating airflow noise, and improving the sound quality performance of the speaker as a whole.