US 12,293,755 B2
Sound shielding device
Jun Akiyama, Tokyo (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on Jul. 24, 2023, as Appl. No. 18/357,420.
Application 18/357,420 is a continuation of application No. PCT/JP2022/002062, filed on Jan. 20, 2022.
Claims priority of application No. 2021-009668 (JP), filed on Jan. 25, 2021.
Prior Publication US 2023/0368769 A1, Nov. 16, 2023
Int. Cl. G10K 11/178 (2006.01); H04R 1/02 (2006.01); E06B 5/20 (2006.01); G10K 11/168 (2006.01)
CPC G10K 11/17861 (2018.01) [G10K 11/17854 (2018.01); G10K 11/17879 (2018.01); H04R 1/025 (2013.01); E06B 5/20 (2013.01); G10K 11/168 (2013.01); H04R 2499/13 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sound insulation device comprising:
a glass sheet composite comprising a plurality of glass plates being laminated, comprising an intermediate layer between at least a pair of glass plates among the glass plates, and partitioning an interior space and an exterior space;
a vibration output unit being fixed to the glass sheet composite and vibrating the glass sheet composite according to an input signal;
an exterior sound detection unit detecting a sound from a noise source or a vibration source and outputting a reference signal according to a detection result, the sound being correlated with a sound wave vibration induced in the glass sheet composite;
an interior sound detection unit detecting a sound in the interior space and outputting an error signal according to a detection result; and
a control unit comprising an adaptive filter that generates a cancel signal having a phase opposite to a phase of the reference signal to minimize the error signal, and outputting the cancel signal from the adaptive filter to the vibration output unit.