Invention Grant
- Patent Title: Method and apparatus for echo data hiding in audio signals
- Patent Title (中): 回声数据隐藏在音频信号中的方法和装置
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Application No.: US656378Application Date: 1996-05-31
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Publication No.: US5893067APublication Date: 1999-04-06
- Inventor: Walter Bender , Daniel Gruhl , Norishige Morimoto
- Applicant: Walter Bender , Daniel Gruhl , Norishige Morimoto
- Applicant Address: MA Cambridge
- Assignee: Massachusetts Institute of Technology
- Current Assignee: Massachusetts Institute of Technology
- Current Assignee Address: MA Cambridge
- Main IPC: G10L11/00
- IPC: G10L11/00 ; G09C5/00 ; G10L19/00 ; H04B1/66 ; H04H20/00 ; H04K1/00 ; G10L3/02 ; H03G3/00
Abstract:
A method of hiding information in a host audio signal introduces one or more echoes into the signal. The separation in time between the host signal and an echo is associated with the value of a datum embedded in the signal. The identity of the embedded datum is determined by observing the delay between the host signal and the echo.
Public/Granted literature
- US4016963A Centrifugal clutch construction Public/Granted day:1977-04-12
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