Comment on An “acoustic metamaterial” that can cancel 94 percent of soundparentComments−esmi7yhttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.02...Like you said, it’s not wideband. This implementation is a notch filter about 50Hz wide. Interesting if you’re looking to reduce a specific source, which can happen. For example to cancel fan noise.
Comments
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.02...
Like you said, it’s not wideband. This implementation is a notch filter about 50Hz wide. Interesting if you’re looking to reduce a specific source, which can happen. For example to cancel fan noise.