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63 records (took 0.031 seconds)

    12.
    发明专利
    未知

    公开(公告)号：BRPI0808705A2

    公开(公告)日：2014-09-09

    申请号：BRPI0808705

    申请日：2008-02-29

    Applicant: PANASONIC CORP

    Inventor： OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI

    IPC: G10L19/005 ,  G10L19/02

    Abstract: The speech encoding apparatus (220) has a first layer encoding section (2201), a first layer decoding section (2202), a delay section (2203), a subtracting section (104), a frequency domain transforming section (101), a second layer encoding section (105) and a multiplexing section (106).

    ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF
    16.
    发明专利
    ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF 未知

    公开(公告)号：CA2679192A1

    公开(公告)日：2008-10-09

    申请号：CA2679192

    申请日：2008-02-29

    Applicant: PANASONIC CORP

    Inventor： OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI

    IPC: G10L19/005 ,  G10L19/02

    Abstract: Disclosed is an encoding device which can accurately specify a band havin g 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 fi rst layer error conversion coefficient indicating an error of decoding signa l for an input signal so as to search for a band having a large error in a r elatively 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 th e first position identification unit (201) and generates second position inf ormation indicating the identified target frequency band; and an encoding un it (203) which encodes a first layer decoding error conversion coefficient c ontained in the target frequency band. The first position information, the s econd position information, and the encoding unit are transmitted to a commu nication partner.

    ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF
    17.
    发明专利
    ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF 未知

    公开(公告)号：SG170078A1

    公开(公告)日：2011-04-29

    申请号：SG2011016110

    申请日：2007-12-12

    Applicant: PANASONIC CORP

    Inventor： YAMANASHI TOMOFUMI ,  OSHIKIRI MASAHIRO

    IPC: G10L19/02 ,  G10L19/038 ,  G10L19/08 ,  G10L19/083 ,  G10L19/24

    Abstract: Disclosed are an encoding device and others capable of reducing the encoded information amount, the audio signal encoding error, and the decoded signal audio quality degradation. The device includes: a frequency region conversion unit (101) which converts an inputted audio signal into a frequency region; a band selection unit (102) which selects a quantization object band from a plurality of sub bands obtained by dividing the frequency region; and a shape quantization unit (103) which quantizes the shape of the frequency region parameter of the quantization object band. When a prediction encoding presence/absence judgment unit (104) judges that the number of common sub bands between the quantization object band and the quantization object band selected in the past is not smaller than a predetermined value, a gain quantization unit (105) performs prediction encoding on the gain of the frequency region parameter of the quantization object band. When the number of the common sub bands is smaller than the predetermined value, the gain quantization unit (105) directly quantizes the gain of the frequency region parameter of the quantization object band.

    19.
    发明专利
    未知

    公开(公告)号：DE602005017952D1

    公开(公告)日：2010-01-07

    申请号：DE602005017952

    申请日：2005-02-22

    Applicant: PANASONIC CORP

    Inventor： YAMANASHI TOMOFUMI ,  SATO KAORU ,  MORII TOSHIYUKI

    IPC: G10L19/04 ,  G10L19/14 ,  G10L19/02 ,  G10L19/12 ,  H04B14/00 ,  H04L1/00

    Abstract: There is provided a communication apparatus (1000) comprising a transmission mode determining section (1001) for generating first transmission mode information based on a first level of ambient noise included in an input signal of the communication apparatus (1000), receiving second transmission mode information which is generated at an apparatus of a communicating party (1050) based on a second level of ambient noise included in an input signal of the apparatus of the communicating party (1050) and which is transmitted from the apparatus of the communicating party (1050), and determining a transmission bit rate of a signal to be transmitted from the communication apparatus (1000) to the apparatus of the communicating party (1050) as third transmission mode information using the first transmission mode information and the second transmission mode information; and a coding section (102) for coding the input signal of the communication apparatus (1000) at the transmission bit rate corresponding to the third transmission mode information and thereby generating an information source code.

    dispositivo de descodificação, dispositivo de codificação, e métodos para os mesmos.
    20.
    发明专利
    dispositivo de descodificação, dispositivo de codificação, e métodos para os mesmos. 未知

    公开(公告)号：BR112012032746A2

    公开(公告)日：2016-11-08

    申请号：BR112012032746

    申请日：2011-06-07

    Applicant: PANASONIC CORP

    Inventor： OSHIKIRI MASAHIRO ,  YAMANASHI TOMOFUMI

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

    Abstract: dispositivo de descodificação, dispositivo de codificação, e métodos para os mesmos. a presente invenção refere-se a um dispositivo de descodificação que pode codificar/descodificar dados espectrais de modo eficiente em uma seção de passagem alta de um sinal de banda larga. no dispositivo descrito: uma unidade de extração de grupo de amostra (372) seleciona parcialmente componentes espectrais por meio de uma facilidade de importância de seleção até o ponto em que os componentes espectrais aproximem-se do componente espectral que tem o valor de amplitude máximo, no espectro de uma passagem alta avaliada por meio de primeiros parâmetros contidos na segunda informação codificada e as bandas mais próximas a cada espectro de uma pluralidade de sub-bandas calculada a partir do espectro de um segundo sinal descodificado; uma unidade de aplicação de ganho logarítmico (373) aplica segundos parãmetros aos componentes espectrais parcialmente selecionados; e uma unidade de processamento de interpolação374) aplica terceiros parãmetros que são ajustado de modo adaptável de acordo com o valor dos segundos parãmetros, para os componentes espectrais que não fora, parciamente selecionados.

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