Category: Speakers

Flat-Panel Loudspeakers

A flat-panel loudspeaker involves both a panel and an inertia exciter. Their structural vibration and acoustic radiation are quite unique. These devices have flexural resonance and the panel tends to vibrate randomly. Simulation tools are essential for flat-panel loudspeakers since they help with the integration process. It’s worth mentioning that the finite element analysis, the…
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Heil Air-Motion Speakers

Air-motion speakers are often confused with ribbon loudspeakers, but they are rather different. A ribbon loudspeaker emits a sound when the whole diaphragm moves forward and backwards in a consistent way. Within this process, the plates never change their angles. On the other hand, the air-motion transformer shifts its diaphragm in a very different way.…
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Transparent Ionic Conduction Speaker

A transparent ionic conduction speaker involves the latest technology. It’s been only a few years since this speaker became available to the public. A couple of Harvard University researchers developed an application of ionic conductivity by designing a clear artificial muscle that is capable of producing sounds spanning the complete audible spectrum.  The transparent ionic…
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Plasma Arc Speakers

Plasma speakers, also known as ionophores, are a type of loudspeaker which modifies air pressure with a high-energy electrical plasma. When connected to the output of an audio amp, the plasma speakers change the size of the electric arc, the plasma glow discharge, or the corona discharge. Eventually, they operate as a massless radiating element.…
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Thermoacoustic Speakers

Thermoacoustic speakers are devices that produce sound waves from temperature fluctuations. These devices are good at heating up and cooling down conducting materials. Thermoacoustic speakers do not rely on vibrations to produce sounds, so they only need a simple structure in order to generate sound. These devices create good quality sound in all directions, so…
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Nanotube Speakers

Carbon nanotubes, also known as CNTs, are tubes that are made of carbon and measured in nanometers. The most common carbon nanotubes are the single-wall carbon nanotubes (SWCNTs) with diameters that in the range of a nanometer. There are also multi-wall carbon nanotubes (MWCNTs) which are made of nested single-wall nanotubes. Double and triple-wall carbon…
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Rotary Speaker

The rotary speaker, also known as the Leslie speaker, was created and manufactured by Donald Leslie. This device refined the sound of the Hammond Organ and revolutionized electronic music. Donald Leslie also invented a special speaker, intended to improve the sound of the Hammond Organ. This speaker was able to rotate itself inside its own…
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