Bose Panaray MA12 Teknik Temel ve Tartışma - Sayfa 14
Konuşmacılar Bose Panaray MA12 için çevrimiçi göz atın veya pdf Teknik Temel ve Tartışma indirin. Bose Panaray MA12 36 sayfaları. Modular line array loudspeaker
Ayrıca Bose Panaray MA12 için: Kullanıcı Kılavuzu (2 sayfalar), Kurulum Kılavuzu (16 sayfalar), Kurulum Kılavuzu (8 sayfalar), Kurulum Kılavuzu (7 sayfalar), Servis Kılavuzu (11 sayfalar)
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Figure 5. A plane wave diverges in only one dimension: out, but not up
and down, or left and right. As a result, the intensity does not drop off
at all.
Plane waves, however, are difficult and impractical to create outside of the laboratory. To
create plane waves in the open air requires an unusually large surface area – one at least one
meter by one meter square – to have any chance of creating plane or plane-like waves over a
reasonably wide range of frequencies. And by unique mechanical inventions this source
would have to be pistonic, meaning that the whole surface moved at the same magnitude and
phase at all times. To our knowledge, no such source has been attempted much less achieved,
even in prototype form.
Yet even if such a source could be realized – and if it were only driven at frequencies
where the wavelength is much smaller than its dimensions – there would be no sound outside
the source area, as shown in Figure 6, because the plane, or plane-like waves are only
radiated out but not to the sides, or up or down. A one-meter by one-meter source, therefore,
would have extremely limited, if any, application because it would only cover listeners
located within a one-meter by one-meter projection. To cover a typical audience, a plane
wave source would have to be much larger. It would need to be the same width and height as
the audience. Even if mechanically possible, which is extremely unlikely, it would obviously
also be completely impractical because of its size.
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Bose
MA12™ Modular Array: Technical Foundation & Discussion
April 2002, © Bose Corporation, All Rights Reserved
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