高保真声频放大器的宽带化和高速化  

Quickening Response and Widening Frequency Band in the Design of High-Fidelity Power Amplifier

作　　者：王丰硕[1] 张正华[1] 严立中[1] 徐云生[1] 雷晓玲[2] 陆旦[1] 

机构地区：[1]扬州大学信息工程学院,江苏扬州225009 [2]甘肃兰州商学院陇桥学院大学英语教学部,甘肃兰州730101

出　　处：《电声技术》2006年第5期37-40,共4页Audio Engineering

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.

关 键 词：声频功放 频带拓展 转换速率 

分 类 号：TN391.9[电子电信—物理电子学]