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Noise reduction device and noise reduction system
The embodiment of the invention discloses a noise reduction device and a noise reduction system. The noise reduction system comprises the noise reduction device and a microphone array, wherein the noise reduction device comprises a sound absorption main body structure, the sound absorption main body structure comprises at least one first sound absorption structure and at least one second sound absorption structure, the first sound absorption structure comprises at least one square unit cell, the square unit cell comprises a front panel, a middle layer and a back panel which are connected in sequence, and the second sound absorption structure comprises a membrane structure fixed by a fixed bracket. Thus, the noise reduction effect and robustness can be increased by reducing outdoor noise and indoor noise at the same time.
本发明实施例公开了一种降噪装置和降噪系统，所述降噪系统包括降噪装置和麦克风阵列，所述降噪装置包括吸声主体结构，所述吸声主体结构包括至少一个第一吸声结构和至少一个第二吸声结构，其中，所述第一吸声结构包括至少一个方形单胞，所述方形单胞包括依次连接的前面板、中间层和背板，所述第二吸声结构包括由固定支架固定的膜结构，由此，本实施例可以通过同时降低室外噪声和室内噪声，提高了降噪效果和鲁棒性。
Noise reduction device and noise reduction system
The embodiment of the invention discloses a noise reduction device and a noise reduction system. The noise reduction system comprises the noise reduction device and a microphone array, wherein the noise reduction device comprises a sound absorption main body structure, the sound absorption main body structure comprises at least one first sound absorption structure and at least one second sound absorption structure, the first sound absorption structure comprises at least one square unit cell, the square unit cell comprises a front panel, a middle layer and a back panel which are connected in sequence, and the second sound absorption structure comprises a membrane structure fixed by a fixed bracket. Thus, the noise reduction effect and robustness can be increased by reducing outdoor noise and indoor noise at the same time.
本发明实施例公开了一种降噪装置和降噪系统，所述降噪系统包括降噪装置和麦克风阵列，所述降噪装置包括吸声主体结构，所述吸声主体结构包括至少一个第一吸声结构和至少一个第二吸声结构，其中，所述第一吸声结构包括至少一个方形单胞，所述方形单胞包括依次连接的前面板、中间层和背板，所述第二吸声结构包括由固定支架固定的膜结构，由此，本实施例可以通过同时降低室外噪声和室内噪声，提高了降噪效果和鲁棒性。
Noise reduction device and noise reduction system
一种降噪装置和降噪系统
CHEN CHANGRU (author)
2021-04-20
Patent
Electronic Resource
Chinese
NOISE REDUCTION DEVICE, COMPACTION PLATE, COMPACTION DEVICE AND NOISE REDUCTION METHOD
| European Patent Office | 2017