Untitled @hexiang888-blog - Tumblr Blog

Low-frequency speaker response short of pure tone signal

By establishing and solving the micro speaker cone in the low frequency pure tone signal is driven by short-differential equations of motion, and with the MAPLE software to analyze the movement of the speaker cone, loud speaker cone given the speed versus time and the speed of the analytical formula - time image described method to analyze the factors affecting transient characteristics of the piezo buzzer, and the results of experimental testing theory. Moreover, it also provides a measure of the quality factor Q magnetic buzzer possible ways of

#micro speaker

Equivalent inductance method Electromagnetic Doubly Salient

Electromagnetic Doubly micro speaker features of (DSEM), proposed the concept of equivalent current, based on a modeling method based on the equivalent piezo buzzer. The method uses a constant equivalent inductance alternative angle-dependent inductance, the Doubly Salient before and after the magnetic buzzer average torque remains unchanged, but the model with DC motor model is exactly the same, so you can as mechanical buzzer as a DC motor simulation and control system engineering.Verify the effectiveness of the method of the equivalent inductance Standing Inductor

#micro speaker

Visual inspection of electronic components

Micro speaker technology in all areas of rapid development and innovation to the electronics industry has brought a huge market demand and development space, thus piezo buzzer the strong development of the electronic components industry, and electronic components intelligent, integration and magnetic buzzer tovisual inspection of electronic components makes it difficult. Traditional manual inspection is limited by visual inspection is slow, inefficient and vulnerable workers experience and physical mechanical buzzer and other subjective factors, has been unable to meet the needs of businesses are Standing Inductor expanding production capacity.

#Standing Inductor

The development and change of speaker

In 1923, Bell Labs decided to micro speaker the perfect music reproduction system, including new player and speakers, stereo recording with MC phono, piezo buzzer carved piece way, was invented in the wave action. The heavy responsibility of the R & D speakers, two engineers who falls CW Rice and EW Kellogg. The equipment used were never seen before, including a 200-watt vacuum tube amplifier, many Bell Labs recordings magnetic buzzer, over the years, Bell Labs mechanical buzzer a variety of speakers - like Lodge cone speaker prototype, compressed air compressed air horn and corona discharge speakers (called ionizing drive), and electrostatic Standing Inductor diaphragm valve control.

#Standing Inductor

Silencer speaker

The silencer micro speaker box acoustic silencer. Closed-box is the typical consumer speakers, baffle box, back opening the box, symmetrical drive box, horn box are silencer speaker. By the the silencer word, its working piezo buzzer can generally smattering of silencer is good or bad, is directly related to the playback quality is good or bad. Here back radiated acoustic divided into two bands, be treated separately. The period of the resonant band magnetic buzzer packing, another section the woofer to remove all of the band after the resonant frequency band that is, non-resonant loud speaker band.

#micro speaker

The rapid development of micro-speakers

With the digitization of the micro speaker information products, network, mobile communications, the industrial scale of the computer Internet has long been much more than the piezo buzzer AV equipment industrial scale, their penetration and update speed is far more than the AV industry, has electro-acoustic devices productsthe largest user of thin, light, small, portable requirements micro-electro-acoustic devices has been rapid development. Mobile communications, computer Internet use micro-electro-acoustic devices including the sending of piezo buzzer, speakers, transducers, headphones and so on. Micro-speakers in miniaturization, due to the limitations of the transducer, efficiency progress in other parts quickly. Desktop gradually give way to the laptop to replace the ordinary liquid crystal display LCD display has become a trend, with the 2001 LCD slashed prices, mechanical buzzer computers and LCD desktop demand will increase significantly, due to the structure in the notebook and LCD restrictions generally rectangular micro speaker

#mechanical buzzer

Sony Ericsson W960 mobile phone audio-visual impression of the King of entertainment!

ny Ericsson W960 first impression when you first see the piezo buzzer, I am even disappointed. W960 does not look like a flagship loud speaker, on the contrary, the shape of the W960 is quite common, and some cheap mobile phones on the market there is not much magnet Buzzer . But this is only the first impression of the W960, I hope it will not affect your feeling on this phone. Similar to the W960 is actually the size and P1, 109 micro speaker

Scope and method of image registration and clinical target volume margin for central-type non-small cell lung cancer in image-guided radiotherapy

Study of image-guided radiation magnet Buzzer (imaging-guided radiation therapy, IGRT) in the center of non-small cell lung cancer (non-smallcell lung cancer, NSCLC) different range of registration, registration kV cone-beam CT (kilo-voltagecone beam CT, kVCBCT) images with the planning CT image registration, and to explore the clinical piezo buzzer volume (clinicaltargetvolume, CTV) putting range, to provide a basis for better precision radiation therapy. Methods: 26 patients with central NSCLC patients each image before IGRT positioning error correction kVCBCT 4, a total of 104 images into the analysis. First use the gray registration plus manual and treatment planning CT image micro speaker

Multi-drive unit flat panel speaker array

With the development of the micro speaker and people's living standard continues to improve, the audience increasingly high demand for large-scale sporting events and large-scale performances sound quality, sound reproduction piezo buzzer is able to create a the field uniformity out loud, clear voice sound environment. To solve this problem using a linear array speaker system, due to its bulky, and the sound radiation direction and angle of loud speaker and other reasons, cause there are some limitations on use. In recent years, multi-drive unit flat-panel speakers are experimental application to which the composition of the linear array, and a two-dimensional multi-drive unit panel magnetic buzzer speaker array has also become the new face of the mechanical buzzer. With the traditional linear array

#micro speaker

Kevlar basin

Wide frequency response and low micro speaker, can withstand greater power, can produce warm, natural midrange and deep, sharp low-frequency, loud speaker, and play dynamic music with excellent results, passion for powerful bassof choice. If you are a super fan of the piezo buzzer, Kevlar speakers to play for those explosions, fierce arena is a very good choice, that magnetic buzzer feeling is unmatched cone or other general material speaker. The drawback is that the manufacturing process is complicated and costly to poor mechanical buzzer, play soft music.

#micro speaker

Speaker voice coil

The micro speaker is a core part of the speaker vibration system, after power, that is to become an electromagnet, and the role of the permanent magnet moves back and forth along the axis direction drive diaphragm voice. Voice coil loud speaker length, strength, speed and so on will affect the sound quality.

Basic voice coil bobbin coil piezo buzzer, constitute a wire-wound coils, and lead and hold down the the lead pressure line paper. In the voice coil work, there will be part of the electrical energy is converted into heat, the temperature of the voice coil can reach the degree of "very hot". Therefore, the magnetic buzzer material is required, must be resistant to heat. Generally used is aluminum foil, aluminum foil can also be used for cooling. Use of heat-resistant mechanical buzzer, fireproof paper.

#micro speaker

Characteristics and measurement of Young's modulus discussion of the speaker cone

As an important part of the piezo buzzer cone is an important issue in electro-acoustic industry, the merits and good or bad performance of the cone determines the quality of the loud speaker cone material physical \ chemical properties of much attention, this articlewould like to highlight the magnet Buzzer and measurement of Young's modulus of the speaker cone material for these micro speaker.

Air coupled vibration detection of all-fiber laser Doppler vibrometer

Heterodyne detection, the establishment of all-fiber laser Doppler vibrometer, used to measure the scattering magnet Buzzer vibration caused by airborne coupling to sensing vibration source vibration. Experiments to explore the impact of the scattering material, fixed and relatively vibration source location of air-coupled piezo buzzer, the scatterers in the frequency range of 200 to 2700Hz vibration response curve. The results show that: the scattering caused by the air-coupled vibration amplitude in the same local micro speaker, the vibration amplitude of the scattering body is generally increased with the frequency increases; scattering material in the material, fixed manner, and factors such as the relative vibration source position the vibration Characteristics are the main, the latter two only affects the loud speaker.

The use of the speaker

Depending on the field of micro speaker, combined with the characteristics of the kinds of speakers to select the speaker. For example, outdoor voice-based broadcasting, the choice of piezo buzzer tubular-speakers, such as requiring high sound quality, you should opt for electric speaker box or loud speaker Speaker: indoor general broadcast, menu electric cone speaker made of small speaker: will Yang PA to enjoy music or for high-quality, should be used by magnet buzzer speaker box combination.

#micro speaker

the low-frequency forced vibration of the speaker cones

The correctness of the moment solution to solve the low-frequency forced vibration of the piezo buzzer cones, and the use of finite element method to verify the results. magnet Buzzer analysis shows that: in the low frequency band, to solve the vibration of the micro speaker diaphragm the pure membrane can approximation --- seeking to meet the film boundary conditions of the film without a moment Solutions; also showed that the anti-resonant frequency in the presence of a low-band ring, the frequency can be used as loud speaker cones piston maximum vibration frequency.

MEMBRANE SOLUTIONS FOR CONIAL SHELL VIBRATIONS IN LOW FREQUENCY RANGE WITH APPLICATION TO LOUDSPEAKER CONE VIBRATIONS

Perturbation method for solving the rotating shell axisymmetric free vibration loud speaker can be obtained at low piezo buzzer the 4 edge moments analytical solution and two commonly used numerical calculation of the film without moments magnet Buzzer. Said conical shell no moment equations obtained for the combination of frequency parameters and geometrical parameters --- kxtanα the form of the independent variable, power series conical shell film moments micro speaker.

Flat Panel Loudspeakers and Its Application into Active Structural Acoustical Control

Briefly the working principle of the flat loud speaker, then from the point of view of sound radiation to establish a theoretical model of the flat speaker, a flat magnet Buzzer sound pressure, sound power of mathematical expressions, obtained by simulation of radiation directivity of the flat speakerand piezo buzzer pressure, sound power frequency response curve, the excellent the plane speaker for active Structural Acoustic control, micro speaker, and made the existing lack of exploratory research.

Trending Blogs

Recently Viewed Blogs

Untitled