Portable electronic device with enhanced sound reproduction

摘要

A miniaturized and portable electronic device with enhanced audio output includes a main body, an internal sound guiding pipe and a surface-mounted but internal loudspeaker. The main body defines a plurality of first sound holes and a plurality of second sound holes at respective ends of the main body. The interconnecting sound guiding pipe receives the portion of the sound waves generated by the loudspeaker which the loudspeaker does not direct to the outside of the main body, and such portion not directly output is collected by the sound guiding pipe to resonate and be transmitted to the second sound holes for outward emission.

主权项

1. A portable electronic device, comprising:
a main body defining a plurality of first sound holes and a plurality of second sound holes, the plurality of first sound holes being spaced apart from the plurality of second sound holes; a sound guiding pipe comprising a first end and a second end, the first end communicating with the first sound holes, the second end communicating with the second sound holes; and a loudspeaker received in the first end, wherein when the loudspeaker emits sound, a first portion of the sound being transmitted to the first sound holes and the outside of the portable electronic device, and a second portion of the sound being transmitted to the sound guiding pipe to resonate and then be transmitted to the second sound holes and the outside of the portable electronic device, a relationship between the sound volume “M” transmitted from the second sound holes, the length “L” of the sound guiding pipe, and the section area “S” of the sound guiding pipe isM≈ρS⁢(L+1.462⁢⁢Sπ),and ρ is a density of air.