公开(公告)号：ES2404408T3

公开(公告)日：2013-05-27

申请号：ES08720311

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

Abstract: Un aparato de codificación que comprende: una sección de 5 cuantificación de forma que codifica una forma de un espectro de frecuencia de audio; y una sección de cuantificación de ganancia que codifica una ganancia del espectro de frecuencia de audio,caracterizado por que la sección de cuantificación de forma comprende: una sección de búsqueda de intervalo que busca una primera forma de onda fija en cada una de unapluralidad de bandas de frecuencia que dividen un intervalo de búsqueda de frecuencia predeterminado; yuna sección de búsqueda minuciosa que busca segundas formas de onda fijas sobre una totalidad delintervalo de búsqueda de frecuencia predeterminado.

公开(公告)号：SG179433A1

公开(公告)日：2012-04-27

申请号：SG2012015111

申请日：2008-02-29

Applicant: PANASONIC CORP

Inventor： MORII TOSHIYUKI ,  OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI

IPC: G10L19/02 ,  G10L19/032 ,  G10L19/10

Abstract: Provided is an encoding device which can reduce the encoding distortion as compared to the conventional technique and can obtain a preferable sound quality for auditory sense. In the encoding device, a shape quantization unit (111) quantizes the shape of an input spectrum with a small number of pulse positions and polarities. The shape quantization unit (111) sets apulse amplitude width to be searched later upon search of the pulse position to a value not greater than the pulse amplitude width which has been searched previously. A gain quantization unit (112) calculates a gain of a pulse searched by the shape quantization unit (111) for each of bands.Figure 1

公开(公告)号：CA2801362A1

公开(公告)日：2011-12-29

申请号：CA2801362

申请日：2011-06-07

Applicant: PANASONIC CORP

Inventor： YAMANASHI TOMOFUMI ,  OSHIKIRI MASAHIRO

IPC: G10L21/04 ,  G10L19/02 ,  G10L19/22 ,  G10L19/24

Abstract: Disclosed is a decoding device which can efficiently encode/decode spectral data in a high pass section of a broadband signal, can achieve a substantial reduction in the amount of processing computations, and can improve the quality of a decoded signal. In the disclosed device: a sample group extraction unit (372) partially selects spectral components by means of an ease of selection importance which is the extent that the spectral components come close to the spectral component having the maximum amplitude value, in the spectrum of a high pass estimated by means of first amplitude adjustment parameters contained in second encoded information and bands most approximated to each of the spectrums of a plurality of sub-bands calculated from the spectrum of a second decode signal; a logarithmic gain application unit (373) applies second amplitude adjustment parameters to the partially selected spectral components; and an interpolation processing unit (374) applies third amplitude adjustment parameters which are adaptively set according to the value of the second amplification adjustment parameters, to the spectral components which were not partially selected.

公开(公告)号：DE602006018129D1

公开(公告)日：2010-12-23

申请号：DE602006018129

申请日：2006-04-28

Applicant: PANASONIC CORP

Inventor： SATOH KAORU ,  MORII TOSHIYUKI ,  YAMANASHI TOMOFUMI

IPC: G10L19/14

公开(公告)号：ZA200906042B

公开(公告)日：2010-05-26

申请号：ZA200906042

申请日：2009-09-01

Applicant: PANASONIC CORP

Inventor： OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI

IPC: G10L19/005 ,  G10L19/02

公开(公告)号：AT463029T

公开(公告)日：2010-04-15

申请号：AT07743017

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

公开(公告)号：CA2679192C

公开(公告)日：2016-01-19

申请号：CA2679192

申请日：2008-02-29

Applicant: PANASONIC CORP

Inventor： OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI

IPC: G10L19/24 ,  G10L19/005 ,  G10L19/02 ,  H04W88/00

Abstract: Disclosed is an encoding device which can accurately specify a band having a large error among all the bands by using a small calculation amount. The device includes: a first position identification unit (201) which uses a first layer error conversion coefficient indicating an error of decoding signal for an input signal so as to search for a band having a large error in a relatively wide bandwidth in all the bands of the input signal and generates first position information indicating the identified band; a second position identification unit (202) which searches for a target frequency band having a large error in a relatively narrow bandwidth in the band identified by the first position identification unit (201) and generates second position information indicating the identified target frequency band; and an encoding unit (203) which encodes a first layer decoding error conversion coefficient contained in the target frequency band. The first position information, the second position information, and the encoding unit are transmitted to a communication partner.

公开(公告)号：BRPI0917953A2

公开(公告)日：2015-11-10

申请号：BRPI0917953

申请日：2009-08-07

Applicant: PANASONIC CORP

Inventor： EHARA HIROYUKI ,  OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI

IPC: G10L19/02 ,  G10L19/032 ,  G10L19/24 ,  G10L21/02

公开(公告)号：BRPI0808428A2

公开(公告)日：2014-07-22

申请号：BRPI0808428

申请日：2008-02-29

Applicant: PANASONIC CORP

Inventor： OSHIKIRI MASAHIRO ,  MORII TOSHIYUKI ,  YAMANASHI TOMOFUMI

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

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.

公开(公告)号：BRPI0808202A2

公开(公告)日：2014-07-01

申请号：BRPI0808202

申请日：2008-02-29

Applicant: PANASONIC CORP

Inventor： MORII TOSHIYUKI ,  OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI

IPC: G10L19/10 ,  G10L19/02 ,  G10L19/032 ,  G10L19/08

Abstract: Provided is an encoding device which can reduce the encoding distortion as compared to the conventional technique and can obtain a preferable sound quality for auditory sense. In the encoding device, a shape quantization unit (111) quantizes the shape of an input spectrum with a small number of pulse positions and polarities. The shape quantization unit (111) sets a pulse amplitude width to be searched later upon search of the pulse position to a value not greater than the pulse amplitude width which has been searched previously. A gain quantization unit (112) calculates a gain of a pulse searched by the shape quantization unit (111) for each of bands.