公开(公告)号：EP2267699A4

公开(公告)日：2012-03-07

申请号：EP09729213

申请日：2009-04-08

Applicant: PANASONIC CORP

Inventor： MORII TOSHIYUKI

IPC: G10L19/02 ,  G10L19/038 ,  G10L19/10 ,  G10L19/24

CPC classification number: G10L19/038 ,  G10L19/10 ,  G10L19/24

Abstract: Good sound quality as perceived by the ear is obtained even with few information bits. A shape quantizer (111) is comprised of an interval search unit (121) which searches and encodes the pulses in each band of a plurality of divisions of the specified search interval, and a full search unit (122) which searches for pulses over the entire search interval, and quantizes the shape of the input spectrum at the positions and the polarities of a small number of pulses. The interval search unit (121) encodes a pulse searched for in a higher band than the specified frequency with fewer bits than a pulse searched for in another band. The full search unit (122) encodes the pulses positioned in a higher band than the specified frequency with fewer bits than the other pulses. A gain quantizer (112) calculates and quantizes in each band the gain of a pulse searched for by the shaper quantizer (111).

公开(公告)号：EP2101320A4

公开(公告)日：2011-10-12

申请号：EP07850641

申请日：2007-12-14

Applicant: PANASONIC CORP

Inventor： SATO KAORU ,  MORII TOSHIYUKI

IPC: G10L19/08 ,  G10L19/02 ,  G10L19/038 ,  G10L19/12 ,  G10L19/125

CPC classification number: G10L19/038 ,  G10L19/125

公开(公告)号：EP2101319A4

公开(公告)日：2011-09-07

申请号：EP07850640

申请日：2007-12-14

Applicant: PANASONIC CORP

Inventor： SATO KAORU ,  MORII TOSHIYUKI

IPC: G10L19/08 ,  G10L19/02 ,  G10L19/038 ,  G10L19/12

CPC classification number: G10L19/12 ,  G10L19/038

Abstract: Disclosed is an adaptive sound source vector quantization device capable of improving quantization accuracy of adaptive sound source vector quantization while suppressing increase of the calculation amount in CELP sound encoding which performs encoding in sub-frame unit. In the device, a search adaptive sound source vector generation unit (103) cuts out an adaptive sound source vector of a frame length (n) from an adaptive sound source codebook (102), a search impulse response matrix generation unit (105) generates a search impulse response matrix of n n by using an impulse response matrix for each of sub-frames inputted from a synthesis filter (104), a search target vector generation unit (106) adds the target vector of each sub-frame so as to generate a search target vector of frame length (n), an evaluation scale calculation unit (107); calculates the evaluation scale of the adaptive sound source vector quantization by using the search adaptive sound source vector, the search impulse response matrix, and the search target vector.

公开(公告)号：EP2051244A4

公开(公告)日：2010-04-14

申请号：EP07792121

申请日：2007-08-07

Applicant: PANASONIC CORP

Inventor： MORII TOSHIYUKI

IPC: G10L19/12 ,  G10L19/08 ,  G10L19/09 ,  G10L19/26

CPC classification number: G10L19/12 ,  G10L19/09 ,  G10L19/26

Abstract: Provided is an audio encoding device capable of improving performance of an adaptive codebook and improving quality of a decoded audio. In this audio encoding device, an adaptive codebook (113) cuts out one specified by a comparison unit (117) from adaptive code vectors stored in an internal buffer and outputs it to a filtering unit (101) and a switching unit (121). The filtering unit (101) performs a predetermined filtering process on the adaptive sound source signal and outputs the obtained adaptive code vector to the switching unit (121). According to an instruction from the comparison unit (117), the switching unit (121) outputs the adaptive code vector directly outputted from the adaptive codebook (113) to a gain adjusting unit (115) when the adaptive codebook (113) is searched and outputs the adaptive code vector outputted from the filtering unit (101) after being subjected to the filtering process to the gain adjusting unit (115) when a fixed sound source is searched after the adaptive sound source search.

公开(公告)号：EP2017830A4

公开(公告)日：2009-05-27

申请号：EP07743017

申请日：2007-05-09

Applicant: PANASONIC CORP

Inventor： YAMANASHI TOMOFUMI ,  SATO KAORU ,  MORII TOSHIYUKI

IPC: G10L21/02 ,  G10L19/02 ,  G10L21/038 ,  H03M7/30

CPC classification number: G10L19/0208 ,  G10L21/038

Abstract: It is possible to provide an encoding device and an encoding method capable of realizing encoding with a very small information amount and a very small calculation amount when encoding higher-band spectrum data according to lower-band spectrum data in a wide-band signal. The device and the method can obtain a high-quality decoded signal even if a large quantization distortion is caused in the lower-band spectrum data. In this device, when encoding higher-band spectrum data in a signal to be encoded, according to lower-band spectrum data in the signal, only for a part (a head portion) of the higher-band spectrum data, the lower-band spectrum data after being quantized is subjected to approximate partial search and higher-band spectrum data is generated according to the search result.

公开(公告)号：EP1768105A4

公开(公告)日：2009-03-25

申请号：EP05751431

申请日：2005-06-16

Applicant: PANASONIC CORP

Inventor： SATO KAORU ,  MORII TOSHIYUKI ,  YAMANASHI TOMOFUMI

IPC: G10L19/02 ,  G10L19/12 ,  G10L21/04

CPC classification number: G10L19/24 ,  G10L19/12

Abstract: There is disclosed an audio encoding device capable of realizing effective encoding while using audio encoding of the CELP method in an extended layer when hierarchically encoding an audio signal. In this device, a first encoding section (115) subjects an input signal (S11) to audio encoding processing of the CELP method and outputs the obtained first encoded information (S12) to a parameter decoding section (120). The parameter decoding section (120) acquires a first quantization LSP code (L1), a first adaptive excitation lag code (A1), and the like from the first encoded information (S12), obtains a first parameter group (S13) from these codes, and outputs it to a second encoding section (130). The second encoding section (130) subjects the input signal (S11) to a second encoding processing by using the first parameter group (S13) and obtains second encoded information (S14). A multiplexing section (154) multiplexes the first encoded information (S12) with the second encoded information (S14) and outputs them via a transmission path N to a decoding apparatus (150).

Abstract translation: 公开了一种音频编码设备，当对音频信号进行分层编码时，能够在扩展层中使用CELP方法的音频编码的同时实现有效编码。 在该装置中，第一编码单元（115）对输入信号（S11）进行CELP方法的音频编码处理，并将所获得的第一编码信息（S12）输出到参数解码单元（120）。 参数解码单元（120）从第一编码信息（S12）中获取第一量化LSP码（L1），第一自适应声源滞后码（A1）等，从这些参数组中获得第一参数组（S13） 编码，并将其输出到第二编码单元（130）。 第二编码单元（130）通过使用第一参数组（S13）对输入信号（S11）进行第二编码处理并获得第二编码信息（S14）。 复用单元（154）将第一编码信息（S12）与第二编码信息（S14）复用并经由传输路径N将它们输出到解码设备（150）。

公开(公告)号：EP2128857A4

公开(公告)日：2013-08-14

申请号：EP08710511

申请日：2008-02-29

Applicant: PANASONIC CORP

Inventor： OSHIKIRI MASAHIRO ,  MORII TOSHIYUKI ,  YAMANASHI TOMOFUMI

IPC: G10L19/02 ,  G10L19/038 ,  G10L19/083 ,  G10L19/16 ,  G10L19/24

CPC classification number: G10L19/00 ,  G10L19/005 ,  G10L19/02 ,  G10L19/0208 ,  G10L19/038 ,  G10L19/083 ,  G10L19/24 ,  G10L25/18

Abstract: Provided is a voice encoding device which can accurately encode a spectrum shape of a signal having a strong tonality such as a vowel. The device includes: a sub-band constituting unit (151) which divides a first layer error conversion coefficient to be encoded into M sub-bands so as to generate M sub-band conversion coefficients; a shape vector encoding unit (152) which performs encoding on each of the M sub-band conversion coefficient so as to obtain M shape encoded information and calculates a target gain of each of the M sub-band conversion coefficients; a gain vector forming unit (153) which forms one gain vector by using M target gains; a gain vector encoding unit (154) which encodes the gain vector so as to obtain gain encoded information; and a multiplexing section unit (155) which multiplexes the shape encoded information with the gain encoded information.

Abstract translation: 提供一种能够准确地对诸如元音之类的具有强调性的信号的频谱形状进行编码的语音编码设备。 该装置包括：子带构成单元（151），将要编码的第一层误差转换系数划分为M个子带以生成M个子带转换系数; 形状矢量编码单元（152），其对M个子带转换系数中的每一个进行编码以获得M形编码信息，并且计算M个子带转换系数中的每一个的目标增益; 增益矢量形成单元（153），其使用M个目标增益形成一个增益矢量; 增益矢量编码单元（154），对增益矢量进行编码以获得增益编码信息; 以及多路复用部分单元（155），其将形状编码信息与增益编码信息进行多路复用。

公开(公告)号：EP2096631A4

公开(公告)日：2012-07-25

申请号：EP07859788

申请日：2007-12-12

Applicant: PANASONIC CORP

Inventor： MORII TOSHIYUKI ,  OSHIKIRI MASAHIRO

IPC: G10L19/26 ,  H03G3/30

CPC classification number: G10L19/26 ,  H03G3/3005

公开(公告)号：EP2096632A4

公开(公告)日：2012-06-27

申请号：EP07832662

申请日：2007-11-28

Applicant: PANASONIC CORP

Inventor： MORII TOSHIYUKI

IPC: G10L19/24 ,  G10L21/038

CPC classification number: G10L19/24 ,  G10L21/038

公开(公告)号：EP2128858A4

公开(公告)日：2012-03-14

申请号：EP08720311

申请日：2008-02-29

Applicant: PANASONIC CORP

Inventor： MORII TOSHIYUKI ,  OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI

IPC: G10L19/02 ,  G10L19/038 ,  G10L19/10 ,  G10L25/18

CPC classification number: G10L19/038 ,  G10L19/10 ,  G10L25/18

Abstract: Provided is an encoding device which can obtain a sound quality preferable for auditory sense even if the number of information bits is small. The encoding device includes a shape quantization unit (111) having: a section search unit (121) which searches for a pulse for each of bands into which a predetermined search section is divided; and a whole search unit (122) which performs search for a pulse over the entire search section. The shape of an input spectrum is quantized by a small number of pulse positions and polarities. A gain quantization unit (112) calculates a gain of the pulse searched by the shape quantization unit (111) and quantizes the gain for each of the bands.

Abstract translation: 提供一种编码装置，即使信息比特数较少，也可以获得听觉优先的音质。 编码装置包括形状量化单元（111），具有：区间搜索单元，其搜索预定搜索区被分割成的每个频带的脉冲; 以及整个搜索单元（122），其执行搜索整个搜索部分的脉冲。 输入频谱的形状由少量的脉冲位置和极性量化。 增益量化单元（112）计算由形状量化单元（111）搜索的脉冲的增益，并对每个频带的增益进行量化。