Earticle

초록

영어

Most of speakers, the con-paper (con shape) or vibration plate generate the sound by reciprocating motion which is received vibrating signal from voice coil. On the other hand, the vibration speaker that reproduces sound by attaching a vibration head to some materials such as wood, plastic, glass plate, etc. instead of cone paper or vibration plate generates different sound timbres depending on the attached materials with vibration head. so we can hear a variety of timbres than ordinary speakers. In this study, the characteristics of vibration and sound propagation according to various materials attached to the vibration head of the vibration speaker were experimentally investigated and this sound propagation characteristics were compare with woofer speaker and micro speaker. As a result of sound propagation characteristics of vibration speaker, the reproduction ability of low frequency band wes inferior to compared than woofer speaker and micro speaker. This is judged to be due to the material characteristics of glass and wood which are source of the sound propagation. As compare with 1kHz sine tone, the woofer speaker has not generated the high order harmonic component, but the glass plate and wood plate used with the vibration speaker head have generated the high order harmonic component at a level that can not be ignored. According to above results, the vibration speaker will be had a low articulation of sound because the higher volume to generate the high distortion.

목차

ABSTRACT
1. 서론
2. 진동스피커의 원리
3. 진동스피커의 음향특성 실험
4. 실험결과 및 고찰
6. 결론
References

키워드

진동스피커 우퍼스피커 마이크로스피커 음향특성 왜곡 백색잡음 조화성분 음압레벨 Vibration speaker Woofer speaker Micro speaker Sound characteristic Distortion White noise Harmonic Sound pressure level

저자

• 이태근 [ Tae-Keun Lee | 대덕대학교 정밀기계공학과 ]

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