关于一款音箱频率响应问题

asong218

请教各位前辈一个问题，我现在用到一款特殊音箱（超声波扬声器），他的指向性非常的小（只有3°），因此想利用他的这一点优势将它用在展览展示工程里面用，这样的话，每个展项都不会出现声音干扰，也不会造成现场的声音污染，但是有一点就是这只扬声器的频率响应太窄了（500Hz--16KHz），会不会造成音质非常的差啊？会差到什么程度呢？能不能用来播放展览展示中多媒体片段的声音，请各位指教，谢谢。频率响应可见下图：

                               
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asong218

A revolutionary new concept in sound reproduction—a paradigm shift in technology application. The HyperSonic Sound® (HSS®) technology
projects a column of modulated ultrasonic frequencies into the air. These ultrasonic frequencies are inaudible by themselves. However,
the interaction of the air and modulated ultrasonic frequencies creates audible sounds that can be heard along the column. This
audible sound wave is caused when the air down-converts the ultrasonic frequencies to the lower frequency spectrum that humans can
hear. Since the audible sound is produced by the column of ultrasonic frequencies (which is highly directional), an important by-product of
this is that the audible sound can be tightly focused in any direction within the listening environment. This provides outstanding flexibility
in placing the sound exactly where you want it and substantially eliminating sound in all other areas. By eliminating the bulky magnets
and moving coil found in a conventional speaker, the SpotDAP system brings other advantages. The system is small and lightweight;
designed for easy mounting. Positioning is straight forward, with no bulky housing, cabinet, vibration, or back wave emissions to consider.
The directionality of the SpotDAP system is unsurpassed, with the added benefit of long projection distances and retention of intelligibility.
Getting sound right where it is wanted eliminates having to use high sound pressure levels to get sound to “carry” to distant points.
Since the SpotDAP directs the audio in a precise manner, less volume is necessary to project sound where it is needed. An audio signal
is sent to an electronic signal processor circuit where equalization, dynamic range control, distortion control, and precise modulation are
performed to produce a composite ultrasonic wave form. The patent pending ModAmp™ technology is used to produce the compact and
lightweight Modulation/Amplifier portions of the SpotDAP. This amplified ultrasonic signal is sent to the emitter that produces a column of
ultrasonic sound that is subsequently converted to highly directional audible sound within the air column. Since ultrasound is highly directional,
the audio sound placement is precise. Directional sound is pointed to the target listener(s) or reflected off an object to create a
Virtual Speaker that is some distance from the SpotDAP unit.

以上是他们厂家对产品的介绍，希望对各位有帮助。

pololink

那是"军事武器"发展出来的喇叭,500Hz以上的重播性还不错,价格稍高了些...
音直非常差??,都已经说明500~16kHz,那也只有针对人声有些用途.也就是说,展场旁白用的喇叭单元.