Title:
ADDITIONAL INFORMATION EMBEDDING METHOD AND ITS DEVICE, AND ADDITIONAL INFORMATION DECODING METHOD AND ITS DECODING DEVICE
Document Type and Number:
WIPO Patent Application WO/2000/057399
Kind Code:
A1
Abstract:
A method for embedding additional information in an audio signal, wherein an audio signal is subjected to MDCT, the MDCT coefficient is calculated, the MDCT coefficient is reduced and shifted along the axis of frequency, and the result is added to the original MDCT coefficient, thus embedding additional information in the audio signal as a watermark.
More Like This:
| JP7097584 | Unnecessary telephone countermeasure system |
| JP2003152891 | INFORMATION PROCESSING SYSTEM |
| WO/2006/052023 | SOUND RECOGNITION SYSTEM AND SECURITY APPARATUS HAVING THE SYSTEM |
Inventors:
SATO HIDEO (JP)
Application Number:
PCT/JP2000/001715
Publication Date:
September 28, 2000
Filing Date:
March 21, 2000
Export Citation:
Assignee:
SONY CORP (JP)
SATO HIDEO (JP)
SATO HIDEO (JP)
International Classes:
G10L15/00; G10L17/00; G10L19/00; G10L19/018; G10L25/18; H04H20/31; (IPC1-7): G10L11/00; G10L19/00; H04H1/00
Foreign References:
| JPH07297725A | 1995-11-10 | |||
| JPH06232824A | 1994-08-19 | |||
| JPH07115369A | 1995-05-02 | |||
| JPH0844399A | 1996-02-16 |
Other References:
See also references of EP 1087377A4
Attorney, Agent or Firm:
Koike, Akira (6-4 Toranomon 2-chome Minato-ku, Tokyo, JP)
Download PDF: