相位均衡对耳机重放的影响  

Effects of phase equalization on headphone reproduction

作　　者：李光炬 桑晋秋[1,2] 郑成诗 石伟志[1,2] 李晓东 

机构地区：[1]中国科学院声学研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《应用声学》2017年第6期471-480,共10页Journal of Applied Acoustics

基　　金：国家高技术研究发展863计划(2015AA016306);国家自然科学基金青年科学基金(11504404);国家自然科学基金青年科学基金(11604362)

摘　　要：均衡耳机到鼓膜的传递函数可有效提高耳机声重放效果。通过主客观实验对比研究幅度均衡方法、相位均衡方法和幅度相位同时均衡方法,结果表明相比于幅度均衡,相位均衡对耳机瞬态响应的影响更大:当系统相位为线性时,瞬态响应衰减越快,线性相位对耳机重放提升音色有显著作用;而以平直幅频响应为目标的幅度均衡对提升耳机重放效果有限。Headphone-to-eardrum transfer function(HETF) equalization is critical to improve headphone reproduction quality. This work studies the magnitude equalization, the phase equalization and the magnitudephase equalization methods through objective and subjective experiments. The results show that phase equalization is a more important factor for transient response than magnitude equalization. The main reason is that the effect of linear phase on headphone reproduction is significant and positively related to the decay time of transient response. The results also reveal that magnitude equalization for producing a nearly flat frequency response over the bandwidth of interest has limited effect on the improvement of the headphone reproduction quality.

关 键 词：耳机到鼓膜的传递函数 均衡 线性相位 耳机重放 

分 类 号：TN64[电子电信—电路与系统]