线性 预定 编码 is one of a family of analysis/resynthesis 技术 发展 in the search for 技术 for 语音 encoding 传送 and 接受 and is still the most widely used 技能 for computer-generated 语音 LPC 试图 to estimate the 频谱 of a 声音 in 术语 of the 滤波器 coefficients which would be needed to 合成 that 声音 when applied to an 'excitation source' which may be either 噪音 for unvoiced 声音 or a band-limited 脉冲 波 in which all the 谐波(泛音) are of 相等 振幅 In a 合成 应用(应用程序) both the excitation 波形 and the 滤波器 coefficients can be 改 in both the 频率 and 时间 domains to 创作 相关 variants of the 原始/原创 声音 源 - Richard Dobson 1992 A 词典 of 电子 and 计算机 音乐 技术 牛津 University Press