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    • 1. 发明申请
    • A SPEECH CODING DEVICE
    • 语音编码设备
    • WO1993006590A1
    • 1993-04-01
    • PCT/BE1991000067
    • 1991-09-20
    • LERNOUT & HAUSPIE SPEECHPRODUCTSYANG, Gao
    • LERNOUT & HAUSPIE SPEECHPRODUCTS
    • G10L03/00
    • G10L19/08G10L19/12G10L2019/0011G10L2019/0014
    • A speech coding device having a first input for receiving a first error word determined upon an ideal and an estimated excitation word itself determined from a speech signal, said first input being connected to a second input of a first unit, a third input of which being connected to a code word generator, an output of said first unit being connected to a filter unit which is close looped with said code word generator, said said code word generator being provided for generating a first series of first code words having a substantially periodic character with a period associated with an input pitch period, said code word generator being also provided for generating a second series of second code words having a substantially non-periodic character, said coding device comprises processing means provided for determining upon words output by said filter unit an energy value and for selecting among said code words the one having produced the lowest energy value.
    • 一种语音编码装置,具有第一输入端,用于接收根据理想信号确定的第一误差字和从语音信号确定的估计的激励词本身,所述第一输入端连接到第一单元的第二输入端,其第三输入端为 连接到码字发生器,所述第一单元的输出连接到与所述码字发生器闭合的滤波器单元,所述码字发生器被提供用于产生具有基本周期性字符的第一系列第一码字 与输入音调周期相关联的周期,所述码字发生器还被提供用于产生具有基本上非周期性字符的第二系列第二码字,所述编码装置包括处理装置,用于确定由所述滤波器单元输出的字 能量值,并且用于在所述代码字中选择产生最低能量值的代码字。
    • 2. 发明申请
    • A LINEAR PREDICTION SPEECH CODING DEVICE
    • 线性预测语音编码装置
    • WO1993006592A1
    • 1993-04-01
    • PCT/BE1991000066
    • 1991-09-20
    • LERNOUT & HAUSPIE SPEECHPRODUCTSYANG, Gao
    • LERNOUT & HAUSPIE SPEECHPRODUCTS
    • G10L09/14
    • G10L19/12
    • A linear Prediction coding device having an input for receiving first words obtained by sampling an inputted speech signal and a first unit provided for determining second words representing an estimation of said inputted first words, a second unit having a first, respectively a second input for receiving said first respectively said second word and provided for determining a coding error word from said inputted first and second word, a weighting filter which is closed looped with said first unit and which has a transfer function A(z)/H(z/ gamma ) wherein A(z) = (I) and H(z/ gamma ) = 1 + mu (z/ gamma ) , mu being the first Parcor coefficient, ai a prediction coefficient obtained from an LPC analysis and an empirical value 0
    • 一种线性预测编码装置,具有用于接收通过对输入的语音信号进行采样而获得的第一个字的输入和用于确定表示所述输入的第一个字的估计的第二个字的第一单元,第二单元,分别具有第一个输入,用于接收第二个输入 所述第一分别表示所述第二字,用于从所述输入的第一和第二字确定编码错误字;加权滤波器,其与所述第一单元闭合并具有传递函数A(z)/ H(z /γ) 其中A(z)=(I)和H(z /γ)= 1 + mu(z /γ)<1>,μ是第一Parcor系数,ai是从LPC分析获得的预测系数和经验值 0 <γ