![]() SUMMARYĪll examples and features mentioned below can be combined in any technically possible way. In portable acoustic systems that are designed with larger acoustic drivers, for example, to reproduce low frequencies accurately, the more space that is occupied by the larger acoustic drivers means less space is available for placement of vents for achieving optimal dipole spacing. Unfortunately, it is difficult to achieve smaller dipole spacing in acoustic systems that require larger acoustic drivers. Variable effective dipole length of loudspeakers can accomplish a greater dipole spacing at lower frequencies, and a smaller dipole spacing at higher frequencies. Loudspeakers can be effective off-ear headphones, particularly loudspeakers having a variable effective dipole length. ![]() Spillage can detract from the usefulness and desirability of off-ear headphones. ![]() This disclosure relates to acoustic transducers.Īcoustic transducers of off-ear headphones are located farther from the ear and do not confine sound to the just the ear, and thus off-ear headphones produce more sound spillage that can be heard by others, as compared to on-ear headphones. ![]()
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June 2023
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