An on-site sound insulation measurement device and measurement method based on a vector sensor
A vector sensor, measuring device technology, applied in instruments, using sonic/ultrasonic/infrasonic waves to analyze solids, analyze materials, etc., can solve problems such as changes, diameter limitations, and inability to test sound insulation performance
Active Publication Date: 2021-11-09
INST OF ACOUSTICS CHINESE ACAD OF SCI
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Problems solved by technology
The measurement based on the standing wave tube can only measure the sound insulation of vertical incidence, and the test frequency is limited, limited by the diameter of the standing wave tube; and the performance of the material will change in the standing wave tube
Based on the reverberation chamber-anechoic chamber / reverberation chamber measurement method, two expensive acoustic measurement chambers are required, which cannot quickly and conveniently conduct on-site sound insulation tests on materials, and cannot test the sound insulation performance under different incident angles
Method used
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Embodiment Construction
[0079] The present invention will be further described now in conjunction with accompanying drawing.
[0080] Such as figure 1 As shown, the present invention provides an on-site sound insulation measurement device based on a vector sensor. The measurement device uses a one-dimensional vector sensor and a sound pressure sensor, which are respectively arranged at the incident end and the transmission end of the material to be measured. , it can realize the sound insulation measurement of a certain material quickly on site, and can measure the sound insulation performance under different incident angles.
[0081] The present invention provides an on-site sound insulation measuring device based on a vector sensor, the device comprising: a speaker 4, a vector sensor 1, a second sound pressure sensor 2 and a data processing module;
[0082] The vector sensor 1 is arranged on the sound wave incident end of the material 3 to be tested, and the second sound pressure sensor 2 is arran...
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The invention belongs to the technical field of acoustic measurement equipment, and in particular relates to a field sound insulation measurement device based on a vector sensor, comprising: a loudspeaker (4), a vector sensor (1), a second sound pressure sensor (2) and a data processing module; the vector sensor (1) is arranged on the sound wave incident end of the material to be measured (3), the second sound pressure sensor (2) is arranged on the sound wave transmission end of the material to be measured (3), and the vector sensor (1) and The second sound pressure sensor (2) is relatively placed, and the loudspeaker (4) and the material to be measured (3) are placed relative to each other at different oblique incident angles; the data processing module is used to obtain the incident sound pressure amplitude; and The transmitted sound pressure response signal collected in real time is processed to obtain the transmitted sound pressure response in the frequency domain; then based on the incident sound pressure amplitude and the transmitted sound pressure response in the frequency domain, the transmission coefficient and sound insulation at different oblique incident angles are calculated.
Description
technical field [0001] The invention belongs to the technical field of acoustic measuring equipment, and in particular relates to an on-site sound insulation measuring device and a measuring method based on a vector sensor. Background technique [0002] At present, the existing sound insulation measurement methods for materials are generally based on standing wave tube measurement or reverberation chamber-anechoic chamber / reverberation chamber measurement. The measurement based on the standing wave tube can only measure the sound insulation of vertical incidence, and the test frequency is limited, limited by the diameter of the standing wave tube; and the performance of the material will change in the standing wave tube. Based on the reverberation chamber-anechoic chamber / reverberation chamber measurement method, two expensive acoustic measurement chambers are required, which cannot quickly and conveniently conduct on-site sound insulation tests on materials, and cannot test...
Claims
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IPC IPC(8): G01N29/11
CPCG01N29/11G01N2291/023
Inventor 赵静
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI