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US 12,744,511 B2Granted
Resonator with plurality of air passages
AssigneeAAC Technologies Pte. Ltd.
InventorBenedict Slotte
Life of this patent
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Abstract
Provided is a resonator. The resonator includes: at least one air cavity and a plurality of air passages communicating with the air cavity. The air cavity and the plurality of air passages are tuned to generate one or more acoustic resonances. Therefore, the desired low acoustic damping can be reasonably well maintained, while distributing higher modes over a wider set of frequencies, while also making each of them proportionally weaker. Thus, they may be more easily made weak enough not to interfere with the desired behaviour of the overall acoustic resonator construction.
Claims16
A resonator, comprising:
- at least one air cavity and a plurality of air passages communicating with the at least one air cavity;
- wherein the at least one air cavity and the plurality of air passages are tuned to generate one or more acoustic resonances;
- the plurality of air passages is arranged along a first direction;
- each of the plurality of air passages has an effective length;
- for all the effective lengths of the plurality of air passages, a ratio of the largest effective length to the smallest effective length is smaller than 2;
- the effective length of each of the plurality of air passages is calculated by a formula:
- Ln=kaLo, where Lo denotes a length of a corresponding single air passage for achieving a desired acoustic mass, kn denotes a coefficient of Lo, Ln denotes the effective length of each of the plurality of air passages, and n denotes a sequential number of the plurality of air passages.
4 more elements
Dependencies are inferred from the claim text.