| 摘要 |
A small microphone is provided to minimize a noise and to prevent an offset and an interference of a sound wave by forming a predetermined number of holes on an outer side of a housing. A small microphone includes a housing(11), a condenser microphone(12), a jack(13), a hole for sound collection(14), and a predetermined number of holes(15). The hole for sound collection is formed on an upper part of the housing. The holes are formed at a regular interval or an irregular interval on an outer side. A diameter of the holes is 0.2 to 2.0 mm. The number of holes is selected based on the utility of the microphone and a size of the housing. The holes prevent a noise by offsetting or interfering a sound wave of a sound source. |
