公开(公告)号：EP1782644A4

公开(公告)日：2012-01-04

申请号：EP05772279

申请日：2005-08-12

Applicant: ERICSSON TELEFON AB L M

Inventor： SVEDBERG JONAS ,  SYNNERGREN PER

IPC: H04W4/10 ,  H04W4/18 ,  H04W88/18

CPC classification number: H04W4/10 ,  G10L19/173 ,  H04W4/18 ,  H04W76/005 ,  H04W88/181

Abstract: Interoperability is achieved between wireless user communication devices that have different speech processing formats and/or attributes. A first wireless user communication device includes a primary speech codec that encodes a first speech message using a first speech encoding format. The encoded speech is then sent to a second wireless user communications device that includes a primary speech codec supporting a second speech encoding format. The first user device receives from the second user device a second speech message encoded using the second speech encoding format. The second speech message is then decoded by the first user device using a second speech decoder supporting decoding of the second speech encoding format. But the first communication device does not support speech encoding using the second speech encoding format-regardless of whether the first communication device includes or does not includes an encoder for encoding speech using the first speech encoding format.

公开(公告)号：EP2143103A4

公开(公告)日：2011-11-30

申请号：EP07835247

申请日：2007-12-05

Applicant: ERICSSON TELEFON AB L M

Inventor： SVEDBERG JONAS ,  SEHLSTEDT MARTIN

IPC: G10L19/00 ,  G10L11/04 ,  G10L19/14

CPC classification number: G10L19/012 ,  G10L19/09 ,  G10L19/20

公开(公告)号：EP2055036A4

公开(公告)日：2010-06-02

申请号：EP07748525

申请日：2007-05-28

Applicant: ERICSSON TELEFON AB L M

Inventor： JOHANSSON INGEMAR ,  FRANKKILA TOMAS ,  SVEDBERG JONAS

IPC: H04L1/00

CPC classification number: H04L1/0003 ,  H04L1/0009 ,  H04L1/0014 ,  H04L1/0015 ,  H04L1/0016

公开(公告)号：WO0031720A2

公开(公告)日：2000-06-02

申请号：PCT/SE9902073

申请日：1999-11-12

Applicant: ERICSSON TELEFON AB L M

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

IPC: G10L11/02 ,  G10L15/00 ,  G10L

CPC classification number: G10L25/78 ,  G10L2025/783

Abstract: Perceptually relevant non-speech information can be preserved during encoding of an audio signal by determining whether the audio signal includes such information (122, 124, 125). If so, a speech/noise classification of the audio signal is overriden (43) to prevent misclassification of the audio signal as noise.

Abstract translation: 通过确定音频信号是否包括这样的信息（122,124,125）可以在编码音频信号期间保留感知相关的非语音信息。 如果是这样，音频信号的语音/噪声分类被覆盖（43），以防止音频信号被错误地分类为噪声。

公开(公告)号：WO0016314A2

公开(公告)日：2000-03-23

申请号：PCT/SE9901432

申请日：1999-08-24

Applicant: ERICSSON TELEFON AB L M

Inventor： UVLIDEN ANDERS ,  SVEDBERG JONAS

IPC: G10L19/22 ,  H03M7/30 ,  H03M7/36 ,  G10L19/12

CPC classification number: G10L19/22

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.

Abstract translation: 多码本固定比特率CELP信号块编码器/解码器包括码本选择器（22），用于根据与信号类型无关的确定性选择过程为每个信号块选择对应的码本标识。 还包括通过使用具有选择的码本标识的码本对每个信号块进行编码/解码的装置。

公开(公告)号：WO2007064256A3

公开(公告)日：2007-12-13

申请号：PCT/SE2005001800

申请日：2005-11-30

Applicant: ERICSSON TELEFON AB L M ,  SANDGREN NICKLAS ,  SVEDBERG JONAS

Inventor： SANDGREN NICKLAS ,  SVEDBERG JONAS

IPC: G10L19/14 ,  G10L19/012 ,  G10L19/16

CPC classification number: G10L19/012 ,  G10L19/173

Abstract: Speech frames of a first speech coding scheme are utilized (210) as speech frames of a second speech coding scheme, where the speech coding schemes use similar core compression schemes for the speech frames, preferably bit stream compatible. An occurrence of a state mismatch in an energy parameter between the first speech coding scheme and the second speech coding scheme is identified (216), preferably either by determining (214) an occurrence of a predetermined speech evolution, such as a speech type transition, e.g. an onset of speech following a period of speech inactivity, or by tentative decoding of the energy parameter in the two encoding schemes followed by a comparison. Subsequently, the energy parameter in at least one frame of the second speech coding scheme following the occurrence of the state mismatch is adjusted (218). The present invention also presents transcoders and communications systems providing such transcoding functionality.

Abstract translation: 利用第一语音编码方案的语音帧（210）作为第二语音编码方案的语音帧，其中语音编码方案对于语音帧使用相似的核心压缩方案，优选地与比特流兼容。 识别第一语音编码方案和第二语音编码方案之间的能量参数中的状态失配的发生（216），优选地通过确定（214）诸如语音类型转换的预定语音演进的发生， 例如 在语音不活动时段之后的语音开始，或者通过对两个编码方案中的能量参数的暂时解码进行比较。 随后，调整在发生状态失配之后的第二语音编码方案的至少一帧中的能量参数（218）。 本发明还提供了提供这种代码转换功能的代码转换器和通信系统。

公开(公告)号：WO2004088951A3

公开(公告)日：2005-03-10

申请号：PCT/US2004009405

申请日：2004-03-25

Applicant: ERICSSON TELEFON AB L M ,  RAITH ALEX ,  SANDBERG EDWIN ,  SVEDBERG JONAS

Inventor： RAITH ALEX ,  SANDBERG EDWIN ,  SVEDBERG JONAS

IPC: H04L12/58 ,  H04L29/06 ,  H04W4/18 ,  H04W88/18 ,  H04Q7/30

CPC classification number: H04W88/18 ,  H04L29/06027 ,  H04L51/066 ,  H04L51/38 ,  H04L65/605 ,  H04W4/18 ,  H04W88/184

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.

Abstract translation: 诸如始发无线通信网络的始发网络根据对应的目的地网络地址选择性地执行输出多媒体消息的多媒体内容转码。 更具体地，在示例性实施例中，始发网络包括或访问被访问的一个或多个数据库以确定是否需要代码转换。 这样的信息可以包括目的地地址的列表，例如电子邮件地址或特定的域标识符，为此需要转码。 此外，这样的信息可以指示是否应当使用默认或特定的代码转换格式。 利用这种方法，始发网络可以将所有或所选择的多媒体内容（例如，音频，视频等）转码成已知或期望与目标目的地网络使用的编码格式兼容的一种或多种编码格式。

公开(公告)号：MX378911B

公开(公告)日：2025-03-10

申请号：MX2020001307

申请日：2015-07-16

Applicant: ERICSSON TELEFON AB L M

Inventor： SVEDBERG JONAS ,  BRUHN STEFAN

IPC: G10L19/005 ,  G10L19/00 ,  G10L19/02 ,  G10L19/025 ,  G10L25/45

Abstract: De conformidad con una modalidad de ejemplo de la presente invención, se describe un método y un aparato del mismo para controlar un método de ocultación para una trama de audio perdida de una señal de audio recibida. Un método para un decodificador de ocultación de una trama de audio perdida comprende detectar en una propiedad de la señal de audio anteriormente recibida y reconstruida, o en una propiedad estadística de pérdidas de trama observadas, una condición para la cual la sustitución de una trama perdida provee calidad relativamente reducida. En el caso de que se detecte una condición de este tipo, el método de ocultación se modifica ajustando selectivamente una fase o una magnitud de espectro de un espectro trama de sustitución.

公开(公告)号：BR112016010273B1

公开(公告)日：2022-05-31

申请号：BR112016010273

申请日：2014-11-06

Applicant: ERICSSON TELEFON AB L M

Inventor： SVEDBERG JONAS ,  TOMAS JANSSON TOFTGÅRD ,  GRANCHAROV VOLODYA

IPC: H03M7/30

Abstract: métodos e dispositivos para segmentação de vetor para codificação trata-se de um método para particionamento de vetores de entrada para codificação. o método compreende a obtenção (210) de um vetor de entrada. o vetor de entrada é segmentado (220), de uma maneira não recursiva, em um número inteiro, nseg, de segmentos de vetor de entrada. uma representação de uma respectiva diferença de energia relativa entre as partes do vetor de entrada em cada lado de cada limite entre os segmentos de vetor de entrada é determinada (230), de uma maneira recursiva. os segmentos de vetor de entrada e as representações das diferenças de energia relativas são fornecidos (250) para codificação individual. unidades de particionamento e programas de computador para particionamento de vetores de entrada para codificação, bem como codificadores posicionais, são apresentados.

公开(公告)号：MA53768A1

公开(公告)日：2021-11-30

申请号：MA53768

申请日：2020-02-20

Applicant: ERICSSON TELEFON AB L M

Inventor： SEHLSTEDT MARTIN ,  SVEDBERG JONAS

IPC: G10L19/005 ,  G10L19/02

Abstract: L'invention concerne un procédé, un décodeur et un code de programme pour commander un procédé de dissimulation pour une trame audio perdue. Une première trame audio et une seconde trame audio d'un signal audio reçu sont décodées pour obtenir des coefficients de transformée en cosinus discrète modifiée (mdct). Des valeurs d'une première forme spectrale basées sur les coefficients mdct décodés à partir de la première trame audio décodée et des valeurs d'une seconde forme spectrale basées sur des coefficients mdct décodés à partir de la seconde trame audio décodée sont déterminées, les formes spectrales comprenant chacune un certain nombre de sous-bandes. Les valeurs des formes spectrales et des énergies de trame de la première trame audio et de la seconde trame audio sont transformées en représentations d'analyses spectrales basées sur des fft. Une condition transitoire est détectée sur la base des représentations des fft. En réponse à la détection de la condition transitoire, le procédé de dissimulation est modifié par réglage sélectif d'une amplitude de spectre d'un spectre de trame de substitution.