The high accuracy can be obtained by the method in wide frequency band.
此测量方法可以在一个较宽的频率范围内，获得较高的测量精度。
This device has some advantages, such as low cost, wide frequency, high accuracy and etc.
它具有成本低，频率范围宽，测量精度高等特点。
Has a microphone with a single directivity and a wide frequency range.
频率范围宽的单指向性话筒，高质量的拾音效能。
Has a microphone with a single directivity and a wide frequency range.
频率范围宽的单指向性话筒，高质量的拾音效能。
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