摘要
论述了高保真声频功率放大器高速化、宽带化的必要性,指出了放大器频率响应、功率带宽、转换速率之间的关系,并提出了采用电流模技术拓展频响、提高放大器转换速率的方法。结合实验测试结果和主观听音评价,证实了放大器高速化、宽带化对音质的改进。
The necessity of quickening response and widening frequency band in the design of high-fidelity power amplifier is elaborated. The relationship among frequency response, power bandwidth and the transforming rate are pointed out. The approaches to widening bandwidth and enhancing transforming rate are put forward. Taking account of the experimental results and the evaluation of subjective sound listening, it is confirmed that quick response and wide frequency band of amplifier can improve the sound quality.
出处
《电声技术》
2006年第5期37-40,共4页
Audio Engineering
关键词
声频功放
频带拓展
转换速率
audio power amplifier
widening frequency band
transforming rate
