摘要： 讨论了现有身份验证技术的状况以及存在的一些问题，叙述了重要的几项生物特征识别技术的优缺点。描述了声纹识别技术广泛涉及的一些声学特性。介绍了基于过零间隔点技术的声纹识别系统和其中一些关键技术和系统的设计流程。对于最重要部分，该文附上了源代码。

关键词: 声纹识别, 身份验证, Bhattacharyya距离, 数学模型

Abstract: This paper discusses the situation of existing identification technology and some problems among them, and explains advantage and disadvantage of some biometrics methods. The paper also introduces some popular acoustics theory involved broadly in speech recognition technology. It introduces speech recognition system based on interval data of passing zero, refers some crucial technology and the design flow of the system. To the most important part, the paper gives the source code.

Key words: Speech recognition, Identification validation, Bhattacharyya distance, Mathematics model