摘要
失真度是衡量音频功率放大器的一个重要的技术指标。脉宽调制型功率放大器也不例外,过高的失真度会使这种新型高效功效失去应有的价值。所以在设计这种功放前,了解引起信号失真的原因以及寻求减小失真的方法就显得非常重要。
Distortion-quotiety is an important technical parameter of scaling an audio-power amplifier. The new type power amplifier, which works in the type of pulse-wide-modulation, doesn't make an exception. It would lose its superority in high efficiency that it should have, just because of its low fidelity. Therefor, studing the causation of the distortion and the means to decrease the distortion in the process of audio-signal amplifying is very important.
出处
《常州工学院学报》
2001年第2期52-55,共4页
Journal of Changzhou Institute of Technology
关键词
脉宽调制
对策
音频功率放大器
信号失真
pulse wide modulation
power amplifier
distortion
countermeasure
