[1]陈永彬.位片式线性预测声码器设计[J].东南大学学报(自然科学版),1985,15(2):49-56.[doi:10.3969/j.issn.1001-0505.1985.02.006]
 Chen Yongbin.Design of Linear Predictive Vocoder with Bit-slice[J].Journal of Southeast University (Natural Science Edition),1985,15(2):49-56.[doi:10.3969/j.issn.1001-0505.1985.02.006]
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位片式线性预测声码器设计()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
15
期数:
1985年第2期
页码:
49-56
栏目:
本刊信息
出版日期:
1985-06-20

文章信息/Info

Title:
Design of Linear Predictive Vocoder with Bit-slice
作者:
陈永彬
南京工学院无线电工程系 副教援
Author(s):
Chen Yongbin
Dept. of Radio Eng.
关键词:
线性预测声码器 逆滤波 音调周期 模型参数 参数抽取 语音合成 反射系数 微处理机 语言信号 参数编码
分类号:
+
DOI:
10.3969/j.issn.1001-0505.1985.02.006
摘要:
本文提出的声码器设计方案的特点是:(1)声道参数抽取,采用改进的“协方差—斜格”的线性预测方法。(2)音调周期抽取,采用逆滤波和降低取样率的平均幅差函数方法。(3)参数编码和语言合成,采用声道参数的非均匀最佳编码和增益与音调的对数编码及三角波或伪随机数为激励的声管模型合成。(4)硬件实现,采用位片微处理机和硬件乘法器为主的系统。
Abstract:
An overall design scheme of practical vocoder is presented. Its distinguishing features are as follows: (1) Extraction of vocal tract parameters: An improved "covariance-lattice" linear predictive method is selected. (2) Extraction of pitch period: An inverse filtered-simplified-AMDF method is proposed. (3) Parametric coding and speech synthesis: Nonuniform optimal coding for vocal tract parameters and logarithmic coding for pitch and gain are suggested. Acoustic-tube modeling synthesis by using slopping-triangle or pseudo-random number exciting signal is employed. (4) Hardware realization: A system which mainly consists of bit-slice microprocessor and hardware multiplier is recommended.
更新日期/Last Update: 2013-05-01