公开(公告)号：PL2956932T3

公开(公告)日：2017-01-31

申请号：PL13805625

申请日：2013-11-12

Applicant: ERICSSON TELEFON AB L M (PUBL)

Inventor： NÄSLUND SEBASTIAN ,  GRANCHAROV VOLODYA ,  SVEDBERG JONAS

IPC: G10L19/005

公开(公告)号：BRPI9913756B8

公开(公告)日：2016-08-02

申请号：BR9913756

申请日：1999-08-24

Applicant: ERICSSON TELEFON AB L M

Inventor： UVLIDEN ANDERS ,  SVEDBERG JONAS

IPC: G10L19/22 ,  H03M7/30 ,  H03M7/36

Abstract: "processo de codificação/decodificação, codificador/decodificador, processo de seleção de arquivo de código para codificação/decodificação e aparelho de seleção de arquivo de código para codificação/decodificação de bloco de sinal de celp de taxa de bit fixa de multi-arquivo de código, e, estrutura de multi-arquivo de código algébrica" um codificador/decodificador de bloco de sinal de celp de taxa de bita fixa de multi-arquivo de código inclui um seletor de arquivo de código (22) para selecionar, para cada bloco de sinal, uma identificação de arquivo de código correspondente de acordo com um procedimento de seleção determinístico que é independente de tipo de sinal. incluído também está meio para codificar/decodificar cada bloco de sinal usando um arquivo de código que tem a identificação de arquivo de código selecionada.

公开(公告)号：MX2015009415A

公开(公告)日：2015-09-24

申请号：MX2015009415

申请日：2013-11-12

Applicant: ERICSSON TELEFON AB L M

Inventor： GRANCHAROV VOLODYA ,  SVEDBERG JONAS ,  NÄSLUND SEBASTIAN

IPC: G10L19/005

Abstract: Un método de encubrimiento de error de trama basado en tramas que incluyen vectores de coeficiente de transformada incluyen las siguientes etapas: Rastrear (S11) los cambios de signo entre los coeficientes de transformada correspondientes de sub-vectores predeterminados de tramas estacionarias válidas consecutivas. Acumula (S12) el número de cambios de signo en sub-vectores correspondientes de un número predeterminado de tramas estacionarias válidas consecutivas. Reconstruye (S13) una trama errónea con la última trama estacionaria válida, pero con signos invertidos de coeficientes de transformada en sub-vectores que tienen un número acumulado de cambios de signo que excede un umbral predeterminado.

公开(公告)号：ES2527697T3

公开(公告)日：2015-01-28

申请号：ES08168570

申请日：2001-05-10

Applicant: ERICSSON TELEFON AB L M

Inventor： WESTERLUND MAGNUS ,  NOHLGREN ANDERS ,  UVLIDEN ANDERS ,  SUNDQVIST JIM ,  SVEDBERG JONAS

IPC: G10L19/005 ,  H04L1/00 ,  H03M7/36

Abstract: Un módulo descodificador (704) para descodificar datos de audio formateados en paquetes que contienen datos codificados primarios para una trama actual y datos codificados redundantes para una trama previa, que comprende: un descodificador primario (712) para descodificar los datos codificados primarios de los paquetes utilizando un modelo de síntesis primaria; un descodificador redundante (714) para descodificar los datos codificados redundantes de los paquetes utilizando un modelo de síntesis redundante, cuando los datos codificados primarios no están disponibles, y medios para localizar una posición de impulso de tono en la trama actual localizando la última posición de impulso conocida en la trama previa, y avanzando entonces desde la última posición de impulso conocida en uno o más valores de retraso de tono para localizar la posición del impulso en la trama actual, utilizando los datos codificados redundantes al dejar de recibir los datos codificados primarios, en donde la posición del impulso de tono localizada en la trama actual se utiliza para reducir las discontinuidades de fase.

公开(公告)号：DE60136537D1

公开(公告)日：2008-12-24

申请号：DE60136537

申请日：2001-05-10

Applicant: ERICSSON TELEFON AB L M

Inventor： SVEDBERG JONAS ,  SUNDQVIST JIM ,  UVLIDEN ANDERS ,  NOHLGREN ANDERS ,  WESTERLUND MAGNUS

IPC: G10L19/00 ,  H03M7/36 ,  H04L1/00

Abstract: An improved forward error correction (FEC) technique for coding speech data provides an encoder module which primary-encodes an input speech signal using a primary synthesis model to produce primary-encoded data, and redundant-encodes the input speech signal using a redundant synthesis model to produce redundant-encoded data. A packetizer combines the primary-encoded data and the redundant-encoded data into a series of packets and transmits the packets over a packet-based network, such as an Internet Protocol (IP) network. A decoding module primary-decodes the packets using the primary synthesis model, and redundant-decodes the packets using the redundant synthesis model. The technique provides interaction between the primary synthesis model and the redundant synthesis model during and after decoding to improve the quality of a synthesized output speech signal. Such "interaction," for instance, may take the form of updating states in one model using the other model.

公开(公告)号：DE69935233T2

公开(公告)日：2007-10-31

申请号：DE69935233

申请日：1999-09-10

Applicant: ERICSSON TELEFON AB L M

Inventor： JOHANSSON INGEMAR ,  SVEDBERG JONAS ,  UVLIDEN ANDERS

IPC: G10L19/00 ,  G10L19/12 ,  G10L19/08 ,  G10L19/14 ,  H03M7/36

Abstract: In producing an approximation of an original speech signal from encoded information about the original speech signal, current parameters (EnPar(i)) associated with a current segment of the original speech signal are determined from the encoded information. Reproduction of a noise component of the original speech signal is improved by using at least one of the current parameters and corresponding previous parameters respectively associated with previous segments of the original speech signal (31, 37, 39) to produce a modified parameter (EnPar(i) mod ). The modified parameter is then used (25, 40) to produce an approximation of the current segment of the original speech signal.

公开(公告)号：BRPI0408686A

公开(公告)日：2006-03-28

申请号：BRPI0408686

申请日：2004-03-25

Applicant: ERICSSON TELEFON AB L M

Inventor： RAITH ALEX ,  SANDBERG EDWIN ,  SVEDBERG JONAS

IPC: H04L12/58 ,  H04L29/06 ,  H04W4/18 ,  H04W88/18

Abstract: An originating network, such as an originating wireless communication network, selectively performs multimedia content transcoding of outgoing multimedia messages as a function of the corresponding destination network addresses. More particular, in an exemplary embodiment, the originating network includes or has access to one or more databases that are accessed to determine whether transcoding is desired. Such information may comprise a listing of destination addresses, e.g., email addresses, or particular domain identifiers, for which transcoding is desired. Moreover, such information can indicate whether default or specific transcoding formats should be used. With this approach, the originating network can transcode all, or selected multimedia content, e.g., audio, video, etc., into one or more coding formats that known or expected to be compatible with the coding formats used by the targeted destination networks.

公开(公告)号：DE69925168T2

公开(公告)日：2006-02-16

申请号：DE69925168

申请日：1999-11-12

Applicant: ERICSSON TELEFON AB L M

Inventor： SVEDBERG JONAS ,  EKUDDEN ERIK ,  UVLIDEN ANDERS ,  JOHANSSON INGEMAR

IPC: G10L25/78 ,  G10L11/00 ,  G10L11/02 ,  G10L15/00 ,  G10L19/012 ,  G10L19/04

Abstract: Perceptually relevant non-speech information can be preserved during encoding of an audio signal by determining whether the audio signal includes such information. If so, a speech/noise classification of the audio signal is overriden to prevent misclassification of the audio signal as noise.

公开(公告)号：SE521225C2

公开(公告)日：2003-10-14

申请号：SE9803164

申请日：1998-09-16

Applicant: ERICSSON TELEFON AB L M

Inventor： UVLIDEN ANDERS ,  SVEDBERG JONAS

IPC: G10L19/22 ,  H03M7/30 ,  H03M7/36 ,  G10L9/14

Abstract: A multi-codebook fixed bitrate CELP signal block encoder/decoder includes a codebook selector ( 22 ) for selecting, for each signal block, a corresponding codebook identification in accordance with a deterministic selection procedure that is independent of signal type. Included are also means for encoding/decoding each signal block by using a codebook having the selected codebook identification.

公开(公告)号：ZA200101866B

公开(公告)日：2001-09-11

申请号：ZA200101866

申请日：1999-08-24

Applicant: ERICSSON TELEFON AB L M

Inventor： UVLIDEN ANDERS ,  SVEDBERG JONAS

IPC: G10L19/22 ,  H03M7/30 ,  H03M7/36 ,  G10L

Abstract: A multi-codebook fixed bitrate CELP signal block encoder/decoder includes a codebook selector ( 22 ) for selecting, for each signal block, a corresponding codebook identification in accordance with a deterministic selection procedure that is independent of signal type. Included are also means for encoding/decoding each signal block by using a codebook having the selected codebook identification.