30results about How to "Good sound quality" patented technology

A mobile phone and an acoustic box structure thereof are provided. The mobile phone includes a shell containing a printed circuit board (PCB) and a hidden antenna therein. The acoustic box structure is disposed between the PCB and the hidden antenna. The acoustic box structure includes a main body, a loudspeaker accommodated in the main body and a frame located between the PCB and the main body. Due to the design of the frame, a hermetic space is framed between the PCB and the main body, thereby preventing sound waves generated by the loudspeaker from leaking out via a gap between the main body and the PCB. Furthermore, the frame made of shockproof materials decreases the resonant transfer between the PCB and the loudspeaker. Consequently, the quality of the sound made by the mobile phone is improved.

A frame type for a current SBR frame is determined according to a type of end border of a previous frame, as well as presence of a transient in the current SBR frame. A start border is determined according to the end border of the previous SBR frame. For a FIXFIX frame, a low time-resolution setting is used. For a FIXVAR or a VARVAR frame, a search for intermediate borders is conducted in the region between the transient and maximum allowed end border location. The end border is also determined at this stage. If there is excess capacity for more borders, another search is conducted in the region between the transient and the start border. For a VARFIX frame, only one search needs to be conducted, in the whole region partitioned by a variable start border and a fixed end border. All of the above are accomplished with two Forward Search operations and one Backward Search operation. They employ the same principle, which is based on evaluating the signal variation of a time segment, but with minor variations to suit the scenarios in which they are applied.

In an embodiment, an electroacoustic transducer has a piezoelectric speaker 20, housing, support member 73, and elastically deformable adhesive layer 74. The piezoelectric speaker 20 has a vibration plate 11 with a periphery 111, and a piezoelectric element 12 joined to the vibration plate 11. The housing houses the piezoelectric speaker 20. The support member 73 is constituted by a part of the housing or by a separate member, and supports the periphery 111. The adhesive layer 74 is provided between the periphery 111 and support member 73. The electroacoustic transducer can offer excellent high-frequency characteristics.

The invention discloses an audio wireless transmission method. According to the technical scheme, an audio conversion device is used for converting a received Bluetooth audio signal into an infrared audio modulation signal, then the infrared audio modulation signal is sent to an infrared receiving acoustic device which is used for demodulating the received infrared modulation signal to generate an audio signal, and an audio amplifying circuit is used for driving an acoustic loudspeaker to produce sounds. The audio wireless transmission method and the acoustic device aim to overcome the defect of an existing wireless audio transmission technology, an application that the Bluetooth and the infrared audio transmission technology are combined is provided, Bluetooth audio playing of a standard main end sound source device can be supported, and the audio transmission method that a plurality of acoustic receiving end devices can simultaneously receive can also be achieved. The invention further provides the application that the Bluetooth and the infrared audio transmission technology are combined and an audio wireless transmission acoustic device which can support Bluetooth audio playing of the standard main end sound source device and also can achieve simultaneous receiving of the acoustic receiving end devices.

The invention discloses a digital sound console based on the cloud technology. The digital sound console comprises a digital sound console body, an intelligent terminal and a cloud server, wherein the digital sound console body, the intelligent terminal and the cloud server are successively connected via the network; the digital sound console body inputs, processes and outputs multipath audio frequency and outputs digital parameters which match the sound effect after processing and debugging by a DSP to the intelligent terminal; and the intelligent terminal stores and processes the digital parameters and outputs the digital parameters to the cloud server. A turn button and a pull bar used for adjusting the tone quality are digitalized, the internal of the digital sound console employs DSP sound effect processing, different sound effects as Reverb and Echo can be generated, signals of different channels can be superposed, the amplitude is limited, and after the tone quality adjustment is completed, the digital parameters that match the tone quality are transmitted to the intelligent terminal via the network and synchronized in the cloud server via the intelligent terminal; and the sound quality is higher, the production, test and maintenance costs are reduced, and the sound effect can be stored for a long term.

The invention relates to a buzzer drive circuit, comprising a power supply module and a control module which are electrically connected with each other, wherein the control module is connected with a buzzer H to drive the buzzer H, the control module is a conversion control module capable of converting direct current pulse to alternating current pulse, so that the drive voltages at the two ends of the buzzer H become alternating voltages with the same control frequencies and alternating directions, a buzzing piece of the buzzer H is further enabled to vibrate back and forth in two directions, and the buzzer is accordingly enabled to obtain greater volume; as the drive voltages of the buzzer are alternating voltages in alternating directions, the direct voltage offset problem in the prior art is avoided, and the buzzer is further enabled to obtain sound producing effects such as better sound quality, volume and the like.

The invention discloses a hypnotizing device, which comprises a body and a projector. The body comprises a shell and a sound box, the projector comprises a shell and the shell of the projector is hinged with the body of the hypnotizing device; the sound box comprises a high-tone loudspeaker, a low-tone loudspeaker and a sound box body which are arranged in the shell, and the low-tone loudspeaker is installed on the sound box body. The hypnotizing device has the advantages that the tone quality of the sound box is good, the projection direction of the projector can be adjusted and the hypnotizing effect of the hypnotizing device can be greatly improved by taking sound and light comprehensive hypnotizing measures.

An audio signal expansion and compression method for expanding and compressing an audio signal in a time domain, includes the steps of setting an initial value of a signal comparison length of a first comparison interval and a second comparison interval, used for detection of two similar waveforms in the audio signal, equal to or larger than a minimum waveform detection length, determining an interval length of the two similar waveforms while changing a shift amount of the first comparison interval and the second comparison interval so that the shift amount does not exceed the signal comparison length, and expanding or compressing the audio signal in the time domain on the basis of the interval length of the two similar waveforms.

The invention relates to a through type high-definition power amplifying circuit of a sound system, comprising a sound source, an amplification driving circuit, a follower circuit, a power circuit and a loudspeaker. The through type high-definition power amplifying circuit is characterized by also comprising a double-offset servo signal through circuit and a current mode circuit, wherein one path of the output end of the amplification driving circuit is connected with the follower circuit, and the other path thereof is connected with the double-offset servo signal through circuit; signals output by the double-offset servo signal through circuit are sent back to the amplification driving circuit; the input end of the current mode circuit is connected with the follower circuit,, and the output end thereof is connected with the amplification driving circuit. The invention has reasonable line, low manufacture cost and stable and reliable performance and can solve the phase distortion problem in the signal transmission process and the matching distortion problem of the power amplifier and the loudspeaker to make the tone quality, the tone colour, the rhythm and tone voice optimal.

The present invention comprises a combination of a bracelet and a Bluetooth wireless headphone. The Bluetooth headphone is stored inside the bracelet, and the bracelet can be worn on the wrist of the user. The Bluetooth headphone has two small earbuds with high sound quality speakers inside.

The invention relates to the technical field of a loudspeaker box vibration membrane. The loudspeaker box vibration membrane comprises a fixing shell. A through slot is opened on the fixing shell. The side wall of the through slot is bended to form a step. A diaphragm is overlapped on the step; the diaphragm comprises an edge and a vibration sheet. The edge comprises an inner transverse part, a bending part and an outer transverse part which are successively connected from the inside out; the outer transverse part is connected with the step; the vibration sheet is arranged on the inner transverse part; and a fixing ring is arranged on a step cover. According to the loudspeaker box vibration membrane, the diaphragm is overlapped on the step and then is fixed by the fixing ring. In this way, the diaphragm is stably connected with the fixing shell. Compared with the existing glue dispensing mode, the loudspeaker box vibration membrane has the advantages that the problem of low production efficiency resulting from long glue dispensing curing time, the problem of influencing resonance resulting from glue dispensing overflow, and the problem of ineffective diaphragm effect resulting from easy fall-off of dispensed glue can be avoided, moreover, through adjusting the weight of the vibration sheet, the resonance frequency is adjusted, therefore, better sound quality of the loudspeaker is obtained, and better visual enjoyment is provided for people.

A method for recording sound includes obtaining on ¿C site music or other external sound from microphone and converting it to be electric signal, amplifying obtained sound to generate digital audio signal, generating audio file according to digital audio signal and storing audio file. In the method microphone is applied to record on ¿C site music or other external sound for ensuring quality of music instrument playing back sound.

The invention provides an acoustic reinforcing material block with a layered pore channel structure as well as a manufacturing method and application thereof. The acoustic reinforcing material block with a layered pore channel structure is prepared by taking components including a porous material, a binder, a filler and water as raw materials and adopting a freezing orientation process and a freeze-drying process; and the interior of the acoustic reinforcing material block with the layered pore channel structure is of a layered structure and is provided with multi-stage pore channels. The acoustic reinforcing material block with the layered pore channel structure fills a loudspeaker resonant cavity of electronic equipment, and the volume of the loudspeaker resonant cavity can be virtually increased, so that the loudspeaker can achieve better sound quality under the condition of smaller volume, and has more excellent sound performance.

The invention discloses a civil air defense alarm system based on IP network broadcast, and belongs to the technical field of civil air defense alarm. The system comprises an alarm unified control center, an alarm terminal controller, an alarm terminal, an IP network broadcast server and a wireless network hotspot, wherein the alarm terminal is a lamp post type alarm; the alarm terminal controlleris connected with the IP network broadcast server and outputs audio to the IP network broadcast server. The IP network broadcast server is connected with the wireless network hotspot through a network and transmits audio data to the wireless network hotspot. The wireless network hot spot broadcasts audio data to an IP network sound post of the lamp post type alarm within the coverage of the wireless network hot spot through a wireless signal, the alarm terminal controller sends a control signal to an alarm unit of the lamp post type alarm in a wireless mode, and the alarm unit controls on-offof the IP network sound post according to the control signal. The audio of the alarm terminal is transmitted in a digital mode, the audio quality is guaranteed, distance limitation is avoided, infinite expansion can be achieved, deployment is convenient, and the alarm terminal is very practical.

The present invention relates to the technical field of sounds, especially to a sound capable of adjusting voice of a musical instrument. A magnet sleeves a center pole, the center pole is fixedly connected on a lower magnetic conductive piece, an upper magnetic conductive piece is arranged on the magnet, a vibration coil is arranged between the magnet and the center pole, the upper end of the upper magnetic conductive piece is fixedly connected with a connection piece, and a vibration plate is connected with the internal periphery of the connection piece through an elastic piece; the lower magnetic conductive piece is provided with a seal layer, the seal layer, the upper magnetic conductive piece, the center pole and the vibration plate form a sealed cavity; the seal layer is filled withgas, and the seal layer is fixedly connected with a cylinder; the cylinder is connected with a control module of the sound, the control module is connected with a music signal input module, a voice adjustment module and the vibration coil, and the music signal input module inputs music information. The sound is simple in device structure, good in adjustable voice and tone quality and wide in application prospect.

A loudspeaker includes a frame coupled to a magnetic circuit, a cone diaphragm coupled to an outer periphery of the frame, a voice coil coupled to the cone diaphragm, the voice coil having a portion placed in a magnetic gap of the magnetic circuit, a tubular port having an end coupled to the voice coil, and a diameter of another end of the tubular port is larger than a diameter of a connecting portion at which the end of the tubular port is coupled to the voice coil, and a dome covering an upper end of the tubular port. A center axis of the tubular port inclines at least by 5° with respect to a center axis of the voice coil.

The invention discloses an electric piano strength adjustable hammer keyboard, which comprises a key base, keyboard plastic pieces and hammer plastic pieces, wherein the key base is provided with a key positioning shaft area, a key extension area, a hammer area and a positioning area; a spring coil is arranged between each keyboard plastic piece and the key base; and the spring coil is arranged onthe keyboard plastic piece. The electric piano strength adjustable hammer keyboard has the advantages that the structure is simple, actions are flexible, through additionally arranging the spring coil between a black and white key plastic piece and the key base, the playing strength of the black and white key plastic piece can be controlled in the case of use, the playing hand feeling is changed,the existing black and white key double hit speed is enhanced to 12 to 15 times/s from 8 to 10 times/s, the black and white key double hit speed is improved, and a player can play a better sound quality.

The invention relates to a high-pitch loudspeaker. The high-pitch loudspeaker is characterized by comprising a support, a plug-in unit and a loudspeaker body. The support is fixed outside the loudspeaker body, the loudspeaker body is connected with the plug-in unit through a conductor wire, the conductor wire is welded with the loudspeaker body, and a circuit board is arranged in the loudspeaker body and connected with a diode. The high-pitch loudspeaker has the advantages that since the plug-in unit is mounted, the high-pitch loudspeaker is quite convenient to use and dismount and mount for a user, and is fine in tone quality effect and simple in structure.

The invention provides a Bluetooth noise reduction earphone in a complex noise environment. The earphone comprises an earphone body, the left side of the earphone body is connected with earplugs through sound outlet wire pipes. A display screen, a power switch and a frequency modulation key are sequentially arranged on the right side of the earphone body from top to bottom; a volume key is arranged on the rear side of the earphone body; the outer side of the sound outlet wire pipe is sleeved with a sound insulation sleeve located between the earplug and the earphone body. The sound insulationsleeve is a bowl-shaped silica gel material sleeve, an opening of the sound insulation sleeve faces the earplug side, two tragus plugs are fixedly installed on the sound outlet wire pipe in the circumferential direction and located between the sound insulation sleeve and the earplug, and a dust screen is installed at a sound outlet of the earplug. The Bluetooth headset solves the problems that noise in a complex noise environment cannot be completely isolated when an existing Bluetooth headset is used for noise reduction, the headset is easily affected by noise when used, the tone quality is poor, and the experience is poor.

The invention relates to a soundable LED lamp, comprising a lamp cup, a driving device disposed in the lamp cup, an illuminating assembly electrically connected with the driving device for illuminating, and a supporting seat connected to the lamp cup; the supporting seat is provided with a horn in electrically connected with the driving device for sounding, and the horn is located in a resonant cavity; and the illuminating assembly comprises a light board electrically connected to the driving device and lamp balls uniformly arranged on the light board, and the horn and the driving device are connected by a detachable plug. The invention solves the problem that existing LED lamps cannot have both sounding and illuminating function, and provides the acoustic lamp which is capable of both sounding and illuminating, is easy to assemble and has good sound quality.

The invention discloses a single-channel speech enhancement system based on speech spectrum compensation. The single-channel speech enhancement system comprises a pre-enhancement module, a speech spectrum compensation module and a joint training module, wherein the pre-enhancement module is used for removing a part of interference signals in a speech; the speech spectrum compensation module is connected with the pre-enhancement module and is used for acquiring a weight matrix of speech spectrum compensation and fusing a pre-enhanced speech spectrum and an originally input speech spectrum by using the weight matrix; and the joint training module is connected with the pre-enhancement module and the speech spectrum compensation module and is used for performing joint training and optimizing the pre-enhancement module and the speech spectrum compensation module. The single-channel speech enhancement system based on speech spectrum compensation has the advantages that enhanced speech can be kept to have high tone quality in a noisy background environment, and the speech is clear and understandable.

The invention discloses a novel loudspeaker and relates to the technical filed of acoustics. The novel loudspeaker is composed of a base (1), a switch (2), a prompting lamp (3), a first loudspeaker (4), a second loudspeaker (5), a third loudspeaker (6), a connecting component (7), a supply hub (8) and screw holes (9), wherein the upper end of the outer side of the base (1) is provided with the switch (2), the lower end of the outer side of the base (2) is provided with the prompting lamp (3), the first loudspeaker (4) is connected with the base (2) through the connecting component (7), the second loudspeaker (5) is connected with the first loudspeaker (4) through the connecting component (7), the third loudspeaker (6) is connected with the second loudspeaker (5) through the connecting component (7), the outside edge of the base (1) is provided with the supply hub (8), and the first loudspeaker (4), the second loudspeaker (5) and the third loudspeaker (6) are respectively provided with a plurality of screw holes (9). The novel loudspeaker can be carried around and is good in sound effect, simple in structure, and beautiful in appearance.

The invention discloses a rotary sound box. The rotary sound box comprises a base, a main shaft, a plurality of loudspeakers and a Bluetooth control module, wherein the main shaft is erected on the base; the loudspeakers are arranged on the main shaft; the height directions of the plurality of loudspeakers along the main shaft are different; the loudspeakers can rotate relative to the center line of the base to change the facing directions of the loudspeakers; and the Bluetooth control module transmits audio signals to the loudspeakers at different frequencies in a non-interfering way. Compared with the prior art, the rotary sound box has the advantages that the plurality of loudspeakers are distributed at different heights of the main shaft, and face different directions, so that the structure is relatively simple. During use, the factors of turn-on/off, volumes and the like of the loudspeakers are controlled independently through the Bluetooth control module, so that a relatively good sound quality effect is achieved, and the rotary sound box is suitable for various places. Bluetooth control is non-directional; the problem in control of signal directivity is solved; and operations are relatively convenient.

Provided is an LED solar ceramic sound box for executing conversion according to rhythms. The LED solar ceramic sound box comprises a jade box body, a horn unit, a chargeable battery, an LED lamp strip, a solar plate, and a sound control chip, wherein, the material of the jade box body is jadeite, nephrite, or color stone, a back plate on the back of the jade box body is a movable withdrawable jade plate, the solar plate is arranged at an upper surface of the jade box body and connected to the chargeable battery through a conductive line, and the LED lamp strip is fixed inside four sides of the jade box body . The solar jade sound box has the advantages that the box body made of jade is quite of culture characteristics, the special material of jade allows very nice sound quality effectiveness, there is the simple structure, saved energy and friendly environment, convenience of using and carrying, and also conversion of the LED lamp according to a music allows the sound box to look more attractive due to light transmission of jade.

This invention provides a preparation method for a musical instrument and its components including the following steps: 1, selecting mixing at least a kind of metal powder and a bonder to refine them to particles and the bonder is 7-61% in the volume percentage, 2, molding said particle state subject to molding to a blank, 3, removing the bonder in the blank, 4, sintering it and the blank is shrunk to a pre-molding one, 5, forging the molding object totally or partly to the final size and density.

The invention relates to a precision reed (100) for single-reed instruments such as the clarinet or saxophone, made of wood or an Arundo donax section, having a vibrating section (120) formed for sound generating by means of an air flow in the single-reed instrument, having a clamping section (110) formed for clamping the reed (100) to the mouthpiece (200) with a reed holder, the clamping section (110) having a support wall (104) for supporting the reed (100) on the mouthpiece (200) and a reed back (111) facing away from of the mouthpiece (200). In this case, the reed back (111) is formed for a fully flat contact with the reed holder.

The present invention relates to the field of the sound device, and provides a dual-horn resonance portable sound. The sound comprises housing with an inner cavity which is provide with a diaphragm configured to divide the inner cavity into a pronunciation cavity and a resonance cavity, wherein the pronunciation cavity is provided with two horns and a control circuit board electrically connected with the horns, and the side wall of the resonance cavity is connected with an installation portion. At work, the control circuit board is powered on to control the sound of the two horns in the pronunciation cavity, the sound wave vibration caused by the horns is transmitted to the diaphragm which is vibrated, and the vibration is transmitted to the resonance cavity, so that the resonance cavity makes a sound through resonance; the resonance cavity is fixed on other articles through the installation portion to allow other articles to make vibration sound, and therefore the dual-horn resonance portable sound employs horns which are sounding medium with good high frequency response, good timbre, and employs the sound wave vibration energy of the horns to allow the diaphragm, the resonance cavity, the installation part and other articles to make resonance sound so as to improve the low frequency, simplify the structure, reduce the cost and have good bass effect, high power supply transition efficiency and good timbre.

The invention provides a frequency division optimization processing audio chip and an earphone. The frequency division optimization processing audio chip comprises an audio processing circuit, a switching unit, a first filtering unit, a first type amplifier, a second filtering unit and a second type amplifier; the audio processing circuit carries out frequency division processing on audio signals, so that the switching unit can transmit the audio signals with different frequencies to the filtering units and the amplifiers with different characteristics for processing according to a frequency division processing result; therefore, excessive power consumption is avoided during processing of audio signals in a reproduction frequency range and frequency-divided low-frequency signals, and better tone quality can be achieved during processing of audio signals outside the reproduction frequency range and frequency-divided medium-high-frequency signals.

The invention discloses a sound production device and electronic equipment, the sound production device comprises a frame, an elastic support member, and a vibration system, a magnetic circuit system and a coil which are sequentially distributed along the vertical direction, the vibration system comprises a vibrating diaphragm and a voice coil, the edge of the vibrating diaphragm is fixed on the frame, and the edge of the voice coil is fixed on the elastic support member. After being electrified, the voice coil can interact with a magnetic field of the magnetic circuit system to generate a driving force in the vertical direction, so that the vibrating diaphragm vibrates to produce sound; at least part of the magnetic circuit system is supported by the elastic supporting piece to form an oscillator, and the elastic supporting piece has elastic deformation along a first horizontal direction; the vibrator comprises a plurality of central magnets and mass blocks, and the plurality of central magnets and mass blocks are alternately distributed; the coil is fixed relative to the frame, and the coil can interact with the magnetic field of the magnetic circuit system after being powered on to generate driving force in the first horizontal direction, so that the vibrator moves in the first horizontal direction.

The invention discloses a sound production device and electronic equipment, the sound production device comprises a frame, an elastic support member, and a vibration system, a magnetic circuit system and a coil which are sequentially distributed along the vertical direction, the vibration system comprises a vibrating diaphragm and a voice coil, the edge of the vibrating diaphragm is fixed on the frame, and the edge of the voice coil is fixed on the elastic support member. After being electrified, the voice coil can interact with a magnetic field of the magnetic circuit system to generate a driving force in the vertical direction, so that the vibrating diaphragm vibrates to produce sound; at least part of the magnetic circuit system is supported by the elastic supporting piece to form an oscillator, and the elastic supporting piece has elastic deformation along a first horizontal direction; the coil is fixed relative to the frame, and the coil can interact with the magnetic field of the magnetic circuit system after being powered on to generate driving force in the first horizontal direction, so that the vibrator moves in the first horizontal direction. According to the technical scheme, the sound production function of the loudspeaker and the function of the linear vibration motor can be achieved at the same time, and meanwhile the better tone quality effect can be achieved.