Title:
ENCODING DEVICE, DECODING DEVICE, SPECTRUM FLUCTUATION CALCULATION METHOD, AND SPECTRUM AMPLITUDE ADJUSTMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2011/086923
Kind Code:
A1
Abstract:
Disclosed is an encoding device whereby it is possible to improve the quality of an encoded signal, even when encoding music signals. In the encoding device, a Code-Excited Linear Prediction (CELP) encoder (101) generates first encoded data by encoding an input signal, a CELP decoder (102) generates a decoded signal by decoding the first encoded data input from the CELP encoder (101), and a characteristic parameter encoder (106) calculates a parameter that expresses the degree of fluctuation in the ratio of the peak components and the floor components between the spectra of the decoded signal and the input signal.
Inventors:
OSHIKIRI, Masahiro (())
Application Number:
JP2011/000133
Publication Date:
July 21, 2011
Filing Date:
January 13, 2011
Export Citation:
Assignee:
PANASONIC CORPORATION (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 〒5718501, JP)
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
International Classes:
G10L19/14; G10L19/12
Attorney, Agent or Firm:
WASHIDA, Kimihito (8th Floor, Shinjuku First West Bldg.,1-23-7, Nishi-Shinjuku, Shinjuku-k, Tokyo 23, 〒1600023, JP)
Claims: