线性失真-频率响应，指向性响应，共振，主要影响音色和清晰度。
Linear distortion - frequency response, polar response, resonance - affects primarily the timbre and clarity of a loudspeaker.
小指的是物理维度和其辐射的声波相比很小，或者其外形不会和该点声源指向性响应发生干扰。
"Small" means that the physical dimensions are small compared to the wavelength being radiated or that the shapes do not interfere with the polar response of the point source.
当设计一个扬声器时，进行自由场测量以观察喇叭的指向性和障板形状对于极性响应的影响是非常重要的。
When designing a loudspeaker it is essential to perform free-space measurements to see the effects of driver directivity and baffle shape on the important polar response.
全指向性的角度随着气球尺寸增大而改善，同时也改善了其中频响应。
The degree of omnidirectionality improves with balloon size and for midrange frequencies.
实验结果表明，该光纤矢量水听器具有很高的灵敏度、较好的空间指向性和良好的低频响应，并有了初步的海上实用性能。
The sea trial of fiber optic vector hydrophone is accomplished. High sensitivity, fine directivity, good low-frequency response and applied performance of fib...
实验结果表明，该光纤矢量水听器具有很高的灵敏度、较好的空间指向性和良好的低频响应，并有了初步的海上实用性能。
The sea trial of fiber optic vector hydrophone is accomplished. High sensitivity, fine directivity, good low-frequency response and applied performance of fib...
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