Sound absorbing structure having one or more acoustic scatterers for improved sound transmission loss
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorsXiaoshi Su, Debasish Banerjee
Life of this patent
Estimating the term…
Abstract
A sound absorbing structure includes a wall having a first side and a second side and at least one acoustic scatterer coupled to a first side of the wall. The first side of the wall may be positioned to face a source of noise, such as moving motor vehicles, airplanes, and the like. The at least one acoustic scatterer has an opening and at least one channel. The at least one channel has a channel open end and a channel terminal end with the channel open end being in fluid communication with the opening.
Claims20
A sound absorbing structure comprising:
- a wall having a first side and a second side, the first side of the wall being positioned to face a source of a noise;
- at least one acoustic scatterer coupled to a first side of the wall, the at least one acoustic scatterer having a resonant frequency;
- the at least one acoustic scatterer having an opening, a first channel and a second channel;
- the first channel has a first channel open end and a first channel terminal end, the first channel open end being in fluid communication with the opening;
- the second channel has a second channel open end and a second channel terminal end, the second channel open end being in fluid communication with the opening;
- the first channel terminal end and the second channel terminal end are separate from one another;
- and
- wherein the first channel and the second channel extend parallelly along the length of the at least one acoustic scatterer.
A system from reducing noise generated by one or more vehicles, the system comprising;
- a surface that supports the one or more vehicles;
- a wall adjacent to and extending along a length of the surface, the wall having a first side and a second side, the first side faces towards the surface;
- at least one acoustic scatterer coupled to a first side of the wall, the at least one acoustic scatterer having a resonant frequency;
- the at least one acoustic scatterer having an opening, a first channel and a second channel;
- the first channel has a first channel open end and a first channel terminal end, the first channel open end being in fluid communication with the opening;
- the second channel has a second channel open end and a second channel terminal end, the second channel open end being in fluid communication with the opening;
- the first channel terminal end and the second channel terminal end are separate from one another;
- and
- wherein the first channel and the second channel extend parallelly along the length of the at least one acoustic scatterer.
Dependencies are inferred from the claim text.