The reason why the speaker emit noise喇叭產生異音的原因

To analyze the usage, there are a few reasons explain why the speakers emit buzz sound or noise:1. Speaker is a passive component, and the drive circuit decides the sound. Therefore, giving the correct power and waveform to the speaker is the basic request.The too large power will lead to the too big amplitude of the diaphragm. The slight problem is distortion, but the serious problem is that the diaphragm might hit the mechanism or the magnet and cause the buzz sound. The basic waveform to drive the speaker is sine wave, if we give square wave or other waves, the efficiency of the speaker will reduce and easily get heated, the buzz sound may happen as a matter of course.
2. The enclosure design of the product will also affect the quality of the sound. The well designed enclosure can improve the frequency response curve of the speaker.The area of sound apertures of the enclosure at least request over 1/8 area of the surface. We need to keep enough vibration space between the case and the diaphragm to avoid the diaphragm hitting the case when it works and emits the noise.
喇叭發生破音/異音的原因,從使用者的使用上的原因來分析,有以下常見的問題,
喇叭是屬於被動元件,會發出什麼聲音是由喇叭的驅動線路決定的,給予喇叭正確的功率,波形是最基本的要求,
過大的功率會造成膜片振幅過大,輕微的會有失真的問題,嚴重的話會振膜會打到機構或是磁鐵,就造成了破音,
驅動喇叭基本波形是弦波,若給予方波等其他波形,喇叭的效率會變低且容易發熱,同時也可能產生破音,
產品機構的音箱設計也會到喇叭的音質,適當的音箱可以改善喇叭的響應曲線,
喇叭出音孔最好有1/8以上的開孔率,且機殼與振膜之間要留膜片振動的空間,以免在發聲時撞到機殼而產生異音,