| 主权项 |
1. A loudspeaker comprising an acoustic waveguide comprising:
an enclosure; an acoustic transmission line formed within the enclosure; and a plurality of acoustic transducers contained within the enclosure and disposed along a length of the acoustic transmission line, each acoustic transducer configured to emit acoustic energy directly into the acoustic transmission line at two separated locations along the length of the acoustic transmission line, wherein the acoustic transmission line is a folded acoustic transmission line, the enclosure includes an internal wall with each side of the internal wall forming at least some of a boundary of the folded acoustic transmission line, and the plurality of acoustic transducers are disposed along the internal wall, wherein the internal wall is corrugated, and wherein the plurality of acoustic transducers are disposed through the internal wall such that they emit acoustic pressure waves in a direction substantially parallel to a direction of extension of the internal wall. |
