363 results about "French horn" patented technology

A bottle unit (30) of a liquid atomizing apparatus is provided with: a bottle section (31) reserving a chemical liquid (L); a horn oscillating member (40) to whose a distal end the liquid (L) in the bottle section (31) is fed; and a mesh member (1) having a number of fine pores (2), and mounted to an end surface of the distal end (41) of the horn oscillating member (40) in contact therewith. The bottle section (31) is constituted of a large capacity section (B) and a small capacity section (b) in communication with the large capacity section (B) through an opening (32), and opposing to the distal end (41) of the horn oscillating member (40). The small capacity section (b) is formed such that the liquid (L′) therein is in contact with a point in the proximity of the contact section between the distal end (41) of the horn oscillating member (40) and the mesh member (1). With such a construction adopted, there can be provided a liquid atomizing apparatus that is obtained at a low cost with not only increased reliability but enhanced durability, and whose operations such as maintenance can be performed with simplicity and convenience without a necessity for a special liquid feed means.

This invention relates to one digital product test method, which adopts digital product and loads with test program software standard audio files and comprises the following steps: the product displaying the standard audio files and sending the sound to the microphone through sound isolation environment; then generating audio files on horn sound; the product uses audio comparison program to compare the audio file and standard frequency files; according to the comparison audio frequency test parameters comparing the audio frequency test parameters and standard parameters to output results. This invention also discloses one special device.

A warning device (610) includes a horn A (630) for generating a first warning having a sound volume satisfying the legal standard and a horn B (632) for generating a second warning having a sound volume not greater than the first horn or a type different from the first horn.

The invention discloses a natural environment recognition method based on time-frequency domain statistical feature extraction. The method comprises the steps of (1) collecting various types of natural environmental sounds such as the sound of an engine, a car horn and wind noise, and establishing a sound sample library, (2) carrying out window framing processing on a sound sample signal, (3) extracting the statistical features of all frame signal in a time domain, (4) marking the type of a sound source to which feature vectors belong, and establishing a sample feature library, (5) training a feature vector by using a support vector machine, and establishing a training model, (6) extracting the feature vectors of a target sound, (7) carrying out matching classification on the feature vectors of the target sound by using the support vector machine, and (8) providing an recognition result. According to the method, the disadvantages of traditional sound LPCC and MFCC feature extraction methods in the aspect of time and frequency combination are made up, and the type to which various types of sounds belong can be judged.

Provided is a horn switching device in which mutual positioning of contacts is easy and in which fitting to an airbag device is easy. The horn switching device 70 is installed between a frame 60 mounted on a module cover 40 and a retainer extension part 16. Contacts 82, 102 are both installed on the module cover 40 side. Until the module cover 40 is pushed, an inner wall 122 is interposed between the contacts 82, 102, and the contacts 82, 102 are separated from each other. If the module cover 40 is pushed, the contacts 82, 102 also move downward, and the contact 102 is pushed inward by a gradient 123a, and the contacts 82, 102 are contacted with each other. By this, the horn sounds.

The related sound box, which can automatic tune sound effect as the environmental varies, comprises: a distance parameter input device to collect and obtain the distance between box and reference, a processor to calculate the action command for adjusting horn angle and control the next controller for rotating to the specified angle, a horn angular controller, and a rotatable horn assembly. This invention introduces much convenience to sound box application.

The invention relates to the technical field of sounds, in particular to a sound noise control circuit. A sound source is output to a horn after being processed by a power amplifier; the power amplifier is provided with a mute pin; the sound source is prohibited from being input to the power amplifier by starting the mute pin or the sound source is allowed to be input to the power amplifier by releasing the mute pin; a signal feedback control circuit is arranged between the mute pin and the power amplifier; and the mute pin is controlled to be started and released according to the information output by the power amplifier. The invention controls the starting and the releasing of the mute pin by monitoring the output voltage of the power amplifier as a feedback signal, and thereby, the sound POP noise is controlled; the information output by the power amplifier can be automatically detected; when the power amplifier can be operated according to the information; the power on and power off control balance point of the power amplifier is automatically found; and a comparatively simple control scheme according with the balance point is designed. The invention has simple operation, fewer parameter modification and wide fitness, can be used for different products and has stabler and more effective effect on controlling the POP noise.

The invention relates to a broadband ventilation and sound insulation window unit structure and application thereof. The broadband ventilation and sound insulation window unit structure includes an inner spiral blade (1), a hollow tube (2) and a thin-walled shell (3); the outer wall of the hollow tube (2) is fixedly connected with the inner spiral blade (1); the thin-walled shell (3) is arranged at the outer edge of the inner spiral blade (1) in a covering manner; the inner spiral blade (1) includes a fixed spiral layer (5) and horn-shaped spiral layers (4), wherein the fixed spiral layer (5)is arranged around the center of the outer wall of the hollow tube (2), and the horn-shaped spiral layers (4) are mounted on two sides of the fixed spiral layer (5); a spiral blade of the fixed spirallayer (5) is a blade with a fixed pitch; and a spiral blade of each horn-shaped spiral layer (4) is a spiral blade with a gradient change in pitch. Compared with the prior art, the broadband ventilation and sound insulation window unit structure has the advantages that the sound insulation effect is improved, the application range is wide, and the like.

The invention discloses a horn manufacturing system and belongs to the field of horn manufacturing. The horn manufacturing system comprises an annular conveying channel. A first feeding swinging plate device for frame body feeding, a first assembly device for turn line ring assembly, a second assembly for slice assembly and a second feeding swinging plate device for magnetic block feeding and assembly are arranged in sequence along the conveying channel,, accordingly, the assembly process of a horn is completed, automatic assembly of the horn is realized, the production efficiency and the product quality are improved, and the cost is reduced.

An object of the present invention is to provide an arcing horn system having a highly efficient dynamic current shutoff property including a dynamic current shutoff capability, for example, enough for the short circuit fault and other object thereof is to provide an arcing horn system capable of repeatedly maintaining the good dynamic current shutoff capability.

In an arcing horn system, an insulative tube 21 for surrounding a front end side of an arcing horn 11, 12 is provided and an air vent 21a communicating from a front end portion of the arcing horn 11, 12 to a front end surface of the insulative tube 21 is formed on the insulative tube 21, so that the arc jet is blown off from the air vent 21a upon the flashover in accordance with the thunder stroke. The insulative tube 21 is made of a polyamide resin. A cap 30 for covering the front end side of the insulative tube 21 is disposed so as to prevent the intrusion of the rain water into the air vent 21a.

The invention relates to a trumpet mute. The trumpet mute comprises an inserting part (1) which is inserted into the horn mouth of the trumpet and used for partially blocking the discharge of the air flow in the horn mouth, and further comprises an adjusting rod (2) and a locking part. One end of the adjusting rod (2) is provided with the inserting part (1), and the other end of the adjusting rod (2) is provided with a flow deflector (4); the surface of the flow deflector (4) guides the air flow blown out from the inserting part (1) to change the running path of the air flow; and the relative distance between the inserting part (1) and the flow deflector (4) on the adjusting rod (2) is adjustable; and the locking part is used for locking and locating the inserting part (1) and/or the flow deflector (4) of which the position on the adjusting rod (2) is adjustable. The trumpet mute provided by the invention not only can be universal in the mutes in various models, but also can greatly regulate different sound effects, thereby enriching the playing effects of the trumpet.

The invention discloses a horn with an acoustic cavity, relates to the technical field of electronic products and solves the problems that through the unique cavity structure design, a first 180-degree cavity and a second 180-degree cavity form a 360-degree space, the 360-degree space infinitely extends outwards from a central point to generate a 360-degree spatial sound sense, and a 3D stereoscopic space is really realized, so that a music source is clear, strong and definite in each phase position direction, and through the unique material and structure of two damping membranes, the noise and the reflection sound which are generated by a second vibrating diaphragm are eliminated to realize a noise reduction effect. The main technical scheme of the invention is as follows: the horn comprises a shell, a vibrating diaphragm component and a magnetic circuit driving component, wherein the shell comprises a first cavity, a second cavity and a third cavity, wherein the first cavity, the second cavity and the third cavity are connected in sequence; a vibrating diaphragm component comprises a first vibrating diaphragm arranged in a first cavity, a second vibrating diaphragm arranged in a second cavity and a third vibrating diaphragm arranged in a third cavity; and a magnetic circuit driving component is arranged in the second cavity and comprises a magnetic conducting plate, a magnet and a T iron. The horn is mainly used for the electronic products.

The invention relates to an MEMS ultrasonic transducer technology, and in particular to an MEMS piezoelectric ultrasonic transducer with a horn structure. The transducer comprises an MEMS piezoelectric ultrasonic transducer and a horn-shaped silicon structure, wherein the horn-shaped silicon structure is bonded on the upper surface or the lower surface of the MEMS piezoelectric ultrasonic transducer. A cavity in the horn-shaped silicon structure forms at least one sound wave guide pipe. Each sound wave guide pipe comprises at least two steps. Each step comprises a step sound pipe. The sectional area of each step sound pipe is gradually increased to form a horn-shaped cavity. Each horn-shaped cavity can amplify sound waves generated by the MEMS piezoelectric ultrasonic transducer. In addition, sound waves generated by the back of the MEMS piezoelectric ultrasonic transducer can be conducted to the top of the MEMS piezoelectric ultrasonic transducer and are overlapped with sound waves generated by the top of the MEMS piezoelectric ultrasonic transducer for transmission, so that the intensity of the sound waves generated by the ultrasonic transducer is further improved. According to the device, the intensity of the sound waves generated by the MEMS ultrasonic transducer can be enhanced, and the energy conversion efficiency of the MEMS piezoelectric ultrasonic transducer is improved.

A Helmholz resonator loudspeaker having a capsule shape with substantial improvements over the existing art, including an improved way of mounting a driver on a tubular section, by having a gradual and continuous curved surface to connect the front of the driver to the tubular section without abrupt changes in geometry, thus creating an inverted horn; an improved way of mounting a resonator tube through one or both of the capsule ends to allow for optimum placement and reduction of curvature in the resonator tube; and ways to make a physical connection between two bass drivers mounted on opposing longitudinal sides of a tubular section in order to cancel out reaction forces.

The invention discloses a dual-drive sounding structure, a dual-function earphone and a control method of the dual-drive sounding structure. A double-drive type sound production structure comprises avibrator structure used for bone conduction sound and a horn structure used for air conduction sound. The loudspeaker further comprises a magnetic conductive connecting piece arranged between the oscillator structure and the horn structure. The magnetic conductive connecting piece is provided with an oscillator side cavity used for embedding the oscillator structure and a horn side cavity used forembedding the horn structure. According to the loudspeaker, the magnetic conductive connecting piece is adopted, and the oscillator structure and the loudspeaker structure are combined together to form an integral structure, so that the loudspeaker is simple in structure and has the sense of wholeness. Besides, the oscillator structure and the horn structure are arranged back to back, and when the loudspeaker is used, audios are output in opposite directions and do not interfere with each other. In addition, the vibrator inner cover and the horn shell form the connecting groove, so that the installation is easy, and the maintenance is convenient. According to the dual-function earphone, the sound guide hole is formed in the side edge, close to the earhole, of the horn shell, so that a sound path of horn playing can be converted to face the earhole, and the horn can be played into the earhole more easily.

A kind of multi-functional mobile trolley speaker, comprising a speaker body, a speaker and a control panel are arranged outside the speaker body, and a speaker control system is provided inside the speaker body; the speaker control system includes a power module, a signal input module, Signal DSP processing module, MCU controller, wireless entertainment module and power amplifier; Said signal DSP processing module comprises ADC analog-to-digital converter, DSP digital signal processor and DAC digital-to-analog converter connected successively, said signal DSP processing module Connect the signal input module, MCU controller and power amplifier respectively. The present invention provides a multi-functional mobile trolley speaker, with a DSP digital signal processor as the core, having various functions such as instrument guitar input, karaoke, Bluetooth/U disk/TF card playback, smartphone and tablet APP control, etc. It is easy to use, has novel and diverse functions, is more entertaining than existing mobile speakers in the market, and fully meets the needs of users for multifunctional and high-performance mobile speaker devices.

The invention discloses a wall structure, and relates to the field of building partition walls. The wall structure comprises a keel framework and sound insulation wall units installed on the two sidesof the keel framework, the keel framework comprises a plurality of vertical keels, each vertical keel comprises a bottom plate and side plates arranged on the two sides of the bottom plate, and eachbottom plate comprises a groove-shaped plate with a groove shape and connecting plates arranged on the two sides of the groove-shaped plate; a groove opening of the groove-shaped plate faces one sideof the side plate, the two sides of the groove-shaped plate are connected with the two side plates through the two connecting plates correspondingly, and the cross sections of the two connecting plates are arranged to be in a horn shape with the opening facing one side of the side plates; and each sound insulation wall unit comprises a first wallboard connected with the vertical keel, a vibrationreduction keel with one side connected with the vertical keel through the first wallboard and a second wallboard connected with the other side of the vibration reduction keel, and the two ends of thevibration reduction keel are free ends. The invention provides the wall body structure which not only guarantees the strength of a wall body, but also can improve the sound insulation performance of the wall body.