公开(公告)号：EP2916319A1

公开(公告)日：2015-09-09

申请号：EP14178789.5

申请日：2014-07-28

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich - Alexander - Universität Erlangen - Nuernberg

发明人： Bäckström, Tom ,  Fischer Pedersen, Christian ,  Fischer, Johannes ,  Hüttenberger, Matthias ,  Pino, Alfonso

IPC分类号： G10L19/07

CPC分类号： G10L19/07 ,  G10L19/0212 ,  G10L19/038 ,  G10L2019/0011 ,  G10L2019/0016

摘要： The invention provides an information encoder for encoding an information signal (IS), the information encoder (1) comprising:
an analyzer (2) for analyzing the information signal (IS) in order to obtain linear prediction coefficients of a predictive polynomial A(z);
a converter (3) for converting the linear prediction coefficients of the predictive polynomial A(z) to frequency values f 1 ...f n of a spectral frequency representation of the predictive polynomial A(z), wherein the converter (3) is configured to determine the frequency values f 1 ...f n by analyzing a pair of polynomials P(z) and Q(z) being defined as P z = A z + z - m - l ⁢ A ⁢ z - 1
and Q z = A z - z - m - l ⁢ A ⁢ z - 1 ,
wherein m is an order of the predictive polynomial A(z) and I is greater or
equal to zero, wherein the converter (3) is configured to obtain the frequency values (f 1 ...f n ) by establishing a strictly real spectrum (RES) derived from P(z) and a strictly imaginary spectrum (IES) from Q(z) and by identifying zeros of the strictly real spectrum (RES) derived from P(z) and the strictly imaginary spectrum (IES) derived from Q(z);
a quantizer (4) for obtaining quantized frequency (f q1 ...f qn ) values from the frequency values (f 1 ...f n ); and
a bitstream producer (5) for producing a bitstream comprising the quantized frequency values (f q1 ...f qn ).

摘要翻译： 本发明提供一种用于对信息信号（IS）进行编码的信息编码器，该信息编码器（1）包括：分析器（2），用于分析信息信号（IS），以获得预测多项式A（z）的线性预测系数 ）; 用于将预测多项式A（z）的线性预测系数转换为预测多项式A（z）的频谱频率表示的频率值f 1 ... fn的转换器（3），其中，转换器（3）被配置 通过分析一对多项式P（z）和Q（z）被定义为P z = A z + z-m-1 ¢A ¢z-1和Q（z），来确定频率值f 1 ... fn z = A z-z-m-1 ¢A ¢z-1，其中m是预测多项式A（z）的阶数，I大于或等于零，其中转换器（3）被配置为 通过建立从P（z）导出的严格实数谱（RES）和来自Q（z）的严格虚数谱（IES）并通过识别严格实数谱的零来获得频率值（f 1 ... fn） RES）和从Q（z）导出的严格虚数谱（IES）; 用于从频率值（f 1 ... f n）获得量化频率（f q1 ... f qn）值的量化器（4）; 以及用于产生包括量化频率值（f q1 ... f qn）的比特流的比特流产生器（5）。

公开(公告)号：EP4318471A2

公开(公告)日：2024-02-07

申请号：EP23217777.4

申请日：2015-02-09

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Bäckström, Tom ,  Fischer Pedersen, Christian ,  Fischer, Johannes ,  Hüttenberger, Matthias ,  Pino, Alfonso

IPC分类号： G10L19/07

摘要： The invention provides an information encoder for encoding an information signal (IS), the information encoder (1) comprising:
an analyzer (2) for analyzing the information signal (IS) in order to obtain linear prediction coefficients of a predictive polynomial A(z);
a converter (3) for converting the linear prediction coefficients of the predictive polynomial A(z) to frequency values f 1 ...f n of a spectral frequency representation of the predictive polynomial A(z), wherein the converter (3) is configured to determine the frequency values f 1 ...f n by analyzing a pair of polynomials P(z) and Q(z) being defined as P z = A z + z − m − l A z − 1
and Q z = A z − z − m − l A z − 1 ,
wherein m is an order of the predictive polynomial A(z) and I is greater or equal to zero, wherein the converter (3) is configured to obtain the frequency values (f 1 ...f n ) by establishing a strictly real spectrum (RES) derived from P(z) and a strictly imaginary spectrum (IES) from Q(z) and by identifying zeros of the strictly real spectrum (RES) derived from P(z) and the strictly imaginary spectrum (IES) derived from Q(z);
a quantizer (4) for obtaining quantized frequency (f q1 ...f qn ) values from the frequency values (f 1 ...f n ); and
a bitstream producer (5) for producing a bitstream comprising the quantized frequency values (f q1 ...f qn ).

公开(公告)号：EP3503099A1

公开(公告)日：2019-06-26

申请号：EP19154890.8

申请日：2015-02-09

申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.

发明人： Bäckström, Tom ,  Fischer Pedersen, Christian ,  Fischer, Johannes ,  Hüttenberger, Matthias ,  Pino, Alfonso

IPC分类号： G10L19/07

摘要： The invention provides an information encoder for encoding an information signal (IS), the information encoder (1) comprising:
an analyzer (2) for analyzing the information signal (IS) in order to obtain linear prediction coefficients of a predictive polynomial A(z);
a converter (3) for converting the linear prediction coefficients of the predictive polynomial A(z) to frequency values f 1 ...f n of a spectral frequency representation of the predictive polynomial A(z), wherein the converter (3) is configured to determine the frequency values f 1 ...f n by analyzing a pair of polynomials P(z) and Q(z) being defined as P z = A z + z − m − l A z − 1 and Q z = A z − z − m − l A z − 1 , wherein m is an order of the predictive polynomial A(z) and I is greater or equal to zero, wherein the converter (3) is configured to obtain the frequency values (f 1 ...f n ) by establishing a strictly real spectrum (RES) derived from P(z) and a strictly imaginary spectrum (IES) from Q(z) and by identifying zeros of the strictly real spectrum (RES) derived from P(z) and the strictly imaginary spectrum (IES) derived from Q(z);
a quantizer (4) for obtaining quantized frequency (f q1 ...f qn ) values from the frequency values (f 1 ...f n ); and
a bitstream producer (5) for producing a bitstream comprising the quantized frequency values (f q1 ...f qn ).

公开(公告)号：EP4318471A3

公开(公告)日：2024-04-10

申请号：EP23217777.4

申请日：2015-02-09

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Bäckström, Tom ,  Fischer Pedersen, Christian ,  Fischer, Johannes ,  Hüttenberger, Matthias ,  Pino, Alfonso

IPC分类号： G10L19/07

摘要： The invention provides an information encoder for encoding an information signal (IS), the information encoder (1) comprising:
an analyzer (2) for analyzing the information signal (IS) in order to obtain linear prediction coefficients of a predictive polynomial A(z);
a converter (3) for converting the linear prediction coefficients of the predictive polynomial A(z) to frequency values f 1 ...f n of a spectral frequency representation of the predictive polynomial A(z), wherein the converter (3) is configured to determine the frequency values f 1 ...f n by analyzing a pair of polynomials P(z) and Q(z) being defined as P z = A z + z − m − l A z − 1
and Q z = A z − z − m − l A z − 1 ,
wherein m is an order of the predictive polynomial A(z) and I is greater or equal to zero, wherein the converter (3) is configured to obtain the frequency values (f 1 ...f n ) by establishing a strictly real spectrum (RES) derived from P(z) and a strictly imaginary spectrum (IES) from Q(z) and by identifying zeros of the strictly real spectrum (RES) derived from P(z) and the strictly imaginary spectrum (IES) derived from Q(z);
a quantizer (4) for obtaining quantized frequency (f q1 ...f qn ) values from the frequency values (f 1 ...f n ); and
a bitstream producer (5) for producing a bitstream comprising the quantized frequency values (f q1 ...f qn ).