CPC H04R 1/1008 (2013.01) [H04R 1/24 (2013.01); H04R 1/2826 (2013.01); H04R 1/347 (2013.01); H04R 1/38 (2013.01)] | 22 Claims |
1. An open audio device, comprising:
an acoustic radiator that emits front-side acoustic radiation from its front side, and emits rear-side acoustic radiation from its rear side;
a front acoustic cavity that receives front-side acoustic radiation and comprises at least one front sound-emitting opening that is configured to emit front-side acoustic radiation at a front sound pressure level (SPL); and
a rear acoustic cavity that receives rear-side acoustic radiation and comprises at least one rear sound-emitting opening that is configured to emit rear-side acoustic radiation at a rear SPL;
wherein the front and rear acoustic cavities each have a fundamental frequency, and wherein the fundamental frequencies are within one octave of each other such that the front and rear SPLs are balanced, so as to reduce sound spillage.
|