Title:
付加情報埋め込み方法及びその装置並びに付加情報の復調方法及びその復調装置
Document Type and Number:
Japanese Patent JP4470322
Kind Code:
B2
Abstract:
The present invention relates to an additional information embedding method for embedding additional information into an audio signal, in which the audio signal is MDCT-transformed to calculate an MDCT coefficient and the calculated MDCT coefficient is damped, shifted in the direction of the frequency axis and added to the original MDCT coefficient, thereby embedding the additional information as a watermark into the audio signal.
Inventors:
Hideo Sato
Application Number:
JP2000607199A
Publication Date:
June 02, 2010
Filing Date:
March 21, 2000
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G10L15/00; G10L17/00; G10L19/00; G10L19/018; G10L25/18; H04H20/31
Domestic Patent References:
| JP7297725A | ||||
| JP6232824A | ||||
| JP7115369A | ||||
| JP844399A |
Attorney, Agent or Firm:
Akira Koike
Eiichi Tamura
Seiji Iga
Eiichi Tamura
Seiji Iga