An acoustic metasurface experimental device
An experimental device and surface-mounted technology, applied in teaching models, instruments, educational appliances, etc., can solve the problems of complex structure, narrow transmission bandwidth, inconsistent simulation results, etc., and achieve the effect of expanding application scope, output frequency bandwidth, and simple structure
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Embodiment 1
[0030] Such as Figure 1 to Figure 9 As shown, an acoustic metasurface experimental device provided by the present invention includes a sound source excitation module 1, a metasurface module 2 and a detection and noise reduction module 3 connected in sequence, and the noise reduction module 3 is connected with a microphone, and the sound wave is excited by the sound source. After the module 1 is generated, the metasurface module 2 gathers the sound pressure signal through the microphone.
[0031] The sound source excitation module 1 comprises a planar wave tube 10, a speaker cover 11, a horn cover 12, a speaker cover support 13, a speaker support chassis 14, a speaker short bracket 15 and a speaker, and the speaker cover 11 is connected to the planar wave tube 10 by bolts, The speaker cover 12 is connected to the inside of the speaker cover 11 through the speaker cover bracket 13, the speaker support chassis 14 is connected to the inside of the speaker cover 11 through the spe...
Embodiment 2
[0060] Compared with the first embodiment, the present embodiment does not install the plane wave tube 10, and directly connects the speaker cover 11 to the metasurface module 2, which is the point sound source excitation.
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