公开(公告)号：SG178320A1

公开(公告)日：2012-03-29

申请号：SG2012008801

申请日：2011-06-06

Applicant: PANASONIC CORP

Inventor： ISHIKAWA TOMOKAZU ,  NORIMATSU TAKESHI ,  ZHOU HUAN ,  CHONG KOK SENG ,  ZHONG HAISHAN

IPC: G10L21/038 ,  G10L21/04

Abstract: BANDWIDTH EXTENSION METHOD, BANDWIDTH EXTENSION APPARATUS, PROGRAM, INTEGRATED CIRCUIT, AND AUDIO DECODING APPARATUS]To provide a bandwidth extension method which allows reduction of computation amount in bandwidth extension and suppression of deterioration of quality in the bandwidth to be extended. In the bandwidth extension method: a low frequency bandwidth signal is transformed into a QMF domain to generate a first low frequency QMF spectrum (S11); pitch-shifted signals are generated by applying different shifting factors on the low frequency bandwidth signal (S12);a high frequency QMF spectrum is generated by time-stretching the pitch-shifted signals in the QMF domain (S13); the high frequency QMF spectrum is modified (S14); and the modified high frequency QMF spectrum is combined with the first low frequency QMF spectrum (S15).Figure 6

公开(公告)号：CA2770287A1

公开(公告)日：2011-12-15

申请号：CA2770287

申请日：2011-06-06

Applicant: PANASONIC CORP

Inventor： ISHIKAWA TOMOKAZU ,  NORIMATSU TAKESHI ,  ZHOU HUAN ,  CHONG KOK SENG ,  ZHONG HAISHAN

IPC: G10L21/04 ,  G10L11/00 ,  G10L19/00 ,  G10L19/02 ,  G10L21/038

Abstract: Provided is a band enhancement method that can reduce the calculation amounts for enhancing bands and further can suppress the quality degradation of enhanced bands. The band enhancement method comprises the steps of: transforming a low frequency band signal to a QMF range, thereby generating a first low frequency QMF spectrum (S11); applying mutually different shift factors to the low frequency band signal, thereby generating a plurality of pitch-shifted signals (S12); performing a time decompression in the QMF range, thereby generating a high frequency QMF spectrum (S13); modifying the high frequency QMF spectrum (S14); and combining the modified high frequency QMF spectrum with the first low frequency QMF spectrum (S15).

公开(公告)号：DE60043036D1

公开(公告)日：2009-11-12

申请号：DE60043036

申请日：2000-05-26

Applicant: PANASONIC CORP

Inventor： TAGAWA KENJI ,  MATSUSHIMA HIDEKI ,  HIROTA TERUTO ,  ISHIKAWA TOMOKAZU ,  INOUE SHINJI ,  KOZUKA MASAYUKI

IPC: G11C7/00 ,  G06F3/16 ,  G11C7/16 ,  H04N1/21

Abstract: A semiconductor memory card stores a plurality of audio objects (AOBs) that compose a plurality of tracks and playlist information showing a reproduction order for the tracks. The semiconductor memory card also stores, as resume information (PLMG_RSM_PL), (1) a Playlist_Number showing which playlist information was used the last time playback was performed for the semiconductor memory card, (2) a Track_Number showing the last track to be played back, and (3) a Playback_Time showing a position at which where playback was stopped as a time expressed in relation to the start of the track.

公开(公告)号：CA2770287C

公开(公告)日：2017-12-12

申请号：CA2770287

申请日：2011-06-06

Applicant: PANASONIC CORP

Inventor： ISHIKAWA TOMOKAZU ,  NORIMATSU TAKESHI ,  ZHOU HUAN ,  CHONG KOK SENG ,  ZHONG HAISHAN

IPC: G10L19/02 ,  G10L21/038 ,  G10L21/04

Abstract: To provide a bandwidth extension method which allows reduction of computation amount in bandwidth extension and suppression of deterioration of quality in the bandwidth to be extended. In the bandwidth extension method: a low frequency bandwidth signal is transformed into a QMF domain to generate a first low frequency QMF spectrum (S11); pitch-shifted signals are generated by applying different shifting factors on the low frequency bandwidth signal (S12); a high frequency QMF spectrum is generated by time-stretching the pitch-shifted signals in the QMF domain (S13); the high frequency QMF spectrum is modified (S14); and the modified high frequency QMF spectrum is combined with the first low frequency QMF spectrum (S15).

公开(公告)号：AU2011263191A1

公开(公告)日：2012-03-01

申请号：AU2011263191

申请日：2011-06-06

Applicant: PANASONIC CORP

Inventor： ISHIKAWA TOMOKAZU ,  NORIMATSU TAKESHI ,  ZHOU HUAN ,  CHONG KOK SENG ,  ZHONG HAISHAN

IPC: G10L21/04 ,  G10L11/00 ,  G10L19/00 ,  G10L19/02 ,  G10L21/038

Abstract: Provided is a band enhancement method that can reduce the calculation amounts for enhancing bands and further can suppress the quality degradation of enhanced bands. The band enhancement method comprises the steps of: transforming a low frequency band signal to a QMF range, thereby generating a first low frequency QMF spectrum (S11); applying mutually different shift factors to the low frequency band signal, thereby generating a plurality of pitch-shifted signals (S12); performing a time decompression in the QMF range, thereby generating a high frequency QMF spectrum (S13); modifying the high frequency QMF spectrum (S14); and combining the modified high frequency QMF spectrum with the first low frequency QMF spectrum (S15).

公开(公告)号：BR0006882B1

公开(公告)日：2014-03-18

申请号：BR0006882

申请日：2000-05-24

Applicant: PANASONIC CORP

Inventor： HIROTA TERUTO ,  TAGAWA KENJI ,  MATSUSHIMA HIDEKI ,  ISHIKAWA TOMOKAZU ,  INOUE SHINJI ,  KOZURA MASAYUKI

IPC: G06F12/14 ,  G11C7/00 ,  G06F1/00 ,  G06F3/06 ,  G06F3/08 ,  G06F3/16 ,  G06F12/00 ,  G06F21/24 ,  G06K17/00 ,  G06K19/00 ,  G06K19/07 ,  G06K19/073 ,  G10K15/04 ,  G10L19/00 ,  G11B20/10 ,  G11B20/12 ,  G11B27/00 ,  G11C7/16 ,  H04L9/08 ,  H04L9/10 ,  H04N1/21

Abstract: An audio stream is divided into a plurality of audio object (AOB) files that are recorded having each been encrypted using a different encryption key. At least one piece of track management information (TKI) is provided corresponding to each track. Playlist information (PLI) assigns a playback position in a playback order to each track when a plurality of tracks are to be played back one after the other.

公开(公告)号：MX2012001696A

公开(公告)日：2012-02-22

申请号：MX2012001696

申请日：2011-06-06

Applicant: PANASONIC CORP

Inventor： NORIMATSU TAKESHI ,  ISHIKAWA TOMOKAZU ,  ZHOU HUAN ,  CHONG KOK SENG ,  ZHONG HAISHAN

IPC: G10L21/04 ,  G10L11/00 ,  G10L19/00 ,  G10L19/02 ,  G10L21/038

Abstract: Se proporciona un método de extensión de ancho de banda que permite la reducción de la cantidad de cómputo en la extensión del ancho de banda y la supresión del deterioro de la calidad del ancho de banda que va a ser extendido. En el método de extensión de ancho de banda se trasforma una señal de ancho de banda de baja frecuencia en un dominio QMF para generar un primer espectro QMF de baja frecuencia (S11); las señales separadas cambiadas se generan al aplicar diferentes factores de cambio sobre la señal de ancho de banda de baja frecuencia (S12); un espectro QMF de alta frecuencia se generan al extender en el tiempo las señales separadas cambiadas en el dominio QMF (S13); se modifica el espectro QMF de alta frecuencia (S14); y el espectro QMF de alta frecuencia modificados se combina con un primer espectro QMF de baja frecuencia (S15).

公开(公告)号：BRPI0905069A2

公开(公告)日：2015-06-30

申请号：BRPI0905069

申请日：2009-07-28

Applicant: PANASONIC CORP

Inventor： ISHIKAWA TOMOKAZU ,  NORIMATSU TAKESHI ,  CHONG KOK SENG ,  ZHOU HUAN

IPC: G10L19/00 ,  G10L19/008 ,  G10L19/02

公开(公告)号：AR082764A1

公开(公告)日：2013-01-09

申请号：ARP110101983

申请日：2011-06-08

Applicant: PANASONIC CORP

Inventor： ZHOU HUAN ,  CHONG KOK SENG ,  ZHONG HAISHAN ,  NORIMATSU TAKESHI ,  ISHIKAWA TOMOKAZU

IPC: G10L19/00 ,  G10L21/038 ,  G10L21/04

Abstract: Para suministrar un método de extensión de ancho de banda que permita la reducción de la cantidad de cómputo en la extensión del ancho de banda y la supresión del deterioro de la calidad del ancho de banda a ser extendido. En el método de extensión de ancho de banda: se trasforma una señal de ancho de banda de baja frecuencia en un dominio QMF para generar un primer espectro QMF de baja frecuencia (S11); las señales separadas cambiadas se generan al aplicar diferentes factores de cambio sobre la señal de ancho de banda de baja frecuencia (S12); un espectro QMF de alta frecuencia se generan al extender en el tiempo las señales separadas cambiadas en el dominio QMF (S13); el espectro QMF de alta frecuencia se modifica (S14); y el espectro QMF de alta frecuencia modificados se combina con un primer espectro QMF de baja frecuencia (S15).

公开(公告)号：BRPI0806228A2

公开(公告)日：2011-09-06

申请号：BRPI0806228

申请日：2008-10-16

Applicant: PANASONIC CORP

Inventor： ISHIKAWA TOMOKAZU ,  NORIMATSU TAKESHI ,  KATAYAMA TAKASHI

IPC: G10L19/008 ,  G10L25/12

Abstract: To provide an enhanced true-to-life atmosphere enjoyed in multipoint connecting, and reduce a calculation load at a multipoint connection unit, as well. A stream synthesizing device includes an input unit which inputs at least two coded signals each including a first downmix acoustic signal and an extended signal, each of first downmix acoustic signals being obtained by coding an acoustic signal into which at least two sound signals are downmixed, and the extended signal being for obtaining the at least two sound signals out of the first downmix acoustic signal; a coded signal generating unit which generates: a second downmix acoustic signal and an extended signal based on each of coded signals inputted by the input unit, the second downmix acoustic signal being for obtaining each of the first downmix acoustic signals, and the generated extended signal being for obtaining each of the first downmix acoustic signals out of the second downmix acoustic signal; and generate a coded signal including the generated second downmix acoustic signal, the generated extended signal, and each of extended signals included in the corresponding inputted coded signal; and an output unit which outputs the generated coded signal.