Patent ID: 7367424

Claim:
A muffler system comprising: an outer can having a sidewall including a forward end, an aft end, and a cavity extending therebetween, the forward end of the sidewall disposed symmetrically about a first longitudinal axis, and the cavity having a first cross-sectional area proximate the forward end and a second cross-sectional area proximate the aft end that is smaller than the first cross-sectional area; an annular baffle coupled to and extending radially inward from the outer can sidewall, the annular baffle having an opening that is disposed symmetrically about a second longitudinal axis, the second longitudinal axis being non-coincident with the first longitudinal axis; and a tube extending through the annular baffle opening and spaced apart from the annular baffle to define a radial gap therebetween, the tube having a length and a substantially uniform cross-sectional area along the length and comprising acoustic material having a resistance of greater than zero.