CPC Subgroup
G10K 11/1785 Full Title
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general > Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (G10K11/36 takes precedence) > using interference effects; Masking sound > by electro-acoustically regenerating the original acoustic waves in anti-phase
4 direct subcodes
Child Classifications
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