Abstract
Based on time-domain pulse-separation method in a standing wave tube, a method using broadband pulse secondary transmission wave is proposed for sound insulation measurement in this paper. Two kinds of broadband pulse were generated, the incidence wave and secondary transmission wave could be obtained easily with one microphone by designing the location of microphone and sample, then acoustic parameters of sample can be calculated. An experiment was completed to verify the proposed method, when compared with time-domain pulse-separation method, a relatively good agreement between these two methods can be observed. Using the proposed method, only one microphone position and one signal are required. This method is simple and with good repetition, could be an effective method for sound insulation measurement. Meanwhile, the measurement uncertainty was done.
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