摘要
心理声学模型是感知编码的核心部分,它是一个模拟人耳听觉的数学模型,其效果好坏直接影响音频编码的质量。为了降低当前使用的心理声学模型的运算复杂度,提高其运算精度,文中采用综合归纳和规范分析的方法,扼要阐述了常用心理声学模型的类型,详细分析了现有模型的不足,并提出了改进的方法,使其更具科学性和实用价值。
Psychoacoustic model, a mathematic model simulating human hearing, is the crucial part of perceptual coding. It directly affects the quality of audio coding. In order to reduce the computational complexity and increase the accuracy of applied psychoacoustic models, this paper, by generalization and analysis, briefly describes some types of applied psychoacoustic models, discusses their drawbacks in detail, and gives some useful modifications, thus making these models more scientific and practical.
出处
《通信技术》
2009年第9期159-161,共3页
Communications Technology
