4 results about "Sound intensity probe" patented technology

The invention relates to the technical field of sound insulation testing, in particular to a method and device for testing sound insulation of an automobile part based on wave velocity forming scanning and a vehicle, and the method comprises the steps: collecting noise information based on a sound collection array; selecting a scanning plane at a sound source and constructing a grid so as to restore noise hotspot information of the noise information to the scanning plane through beam forming analysis, and superposing the original geometric figure to obtain a wave velocity forming array; and determining the distribution information of the noise source of the to-be-detected automobile part according to the wave velocity forming array. Therefore, the problems that in the related technology, due to the fact that a sound intensity probe is used for testing points of a test piece every 10 cm, the test period is long, the position and angle deviation of the probe is prone to being caused by hand-held mobile testing, errors are large, the sound insulation index tested through a sound intensity method and the sound insulation index tested through a reverberation sound insulation method have test errors and need to be corrected, and the testing cost is high are solved. And the test efficiency and precision are not enough.

The application discloses a kind of intelligent material sound insulation quantity testing device and method, the intelligent material sound insulation quantity testing device and method include using sound source in reverberation chamber to the sound intensity probe in sound absorption chamber occurs sound source, wherein sound source in reverberation chamber forms the diffusion field that energy density is uniform everywhere, in each propagation direction makes random distribution;Using sound intensity probe receives the sound of sound source through the sound material sample to be tested;According to the sound insulation volume of reverberation chamber sound pressure level and sound intensity probe received sound pressure level, the sound material sample to be tested is calculated.This application provides a kind of intelligent material sound insulation quantity testing device and method has the automatic test of using intelligent testing device, can efficiently carry out test and test according to requirement.

The invention discloses an intelligent material sound reduction index testing device and method.The intelligent material sound reduction index testing method comprises the steps that a sound source in a reverberation chamber is used for generating a sound source to a sound intensity probe arranged in an anechoic chamber, and a diffusion field which is uniform in energy density and randomly distributed in all propagation directions is formed in the reverberation chamber; receiving the sound of the sound source passing through the to-be-tested acoustic material sample piece by using a sound intensity probe; and according to the sound pressure level of the reverberation chamber and the sound pressure level received by the sound intensity probe, calculating the sound insulation amount of the to-be-tested acoustic material sample. According to the intelligent material sound insulation index testing device and method provided by the invention, the intelligent testing device is used for automatic testing, and test detection and testing can be efficiently carried out according to requirements.

This utility model belongs to the field of sound insulation measurement and discloses an automatic scanning sound intensity method for measuring sound insulation. Its features include: a computer with a human-machine interface, an Arduino microcontroller, a three-axis linear slide module, and a sound intensity analyzer. The computer is connected to the Arduino microcontroller, which is connected to the motor drivers of the three-axis linear slide module. The sound intensity probe of the sound intensity analyzer is fixed on the end slide of the three-axis linear slide module. This device can not only automatically execute the sound intensity probe scanning path, but also set parameters such as scanning speed and measurement surface size through the human-machine interface, and display the scanning line trajectory. This not only reduces the influence of manual measurement on the measurement results and improves measurement accuracy and reliability, but also makes operation simple and intuitive.