Methods and Apparatuses for Removal of Steganograpy Message from Media Content

• US 20150194159A1
• Filed: 03/25/2014
• Published: 07/09/2015
• Est. Priority Date: 01/07/2014
• Status: Abandoned Application

• Current Assignee: Verance Corporation
• Original Assignee: Anthony Mai
• Inventors: Mai, Anthony
• Application Number:
  US14/225,414
• Publication Number:
  US 20150194159A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G10L 19/018 Audio watermarking, i.e. embedding inaudible data in the audio signal
• CPC Class Codes: G10L 21/00 Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility G10L19/00 takes precedence

Abstract

Methods and apparatuses to remove watermarks and other steganography messages embedded in media contents, and render the said hidden information un-detectable by its intended receivers.

Claims

1. A method of processing input audio content to create output audio content, comprising:

1A. provided such input audio may contain hidden information sequentially embedded;

1B. providing input audio comprising analog or digital data laid out in a time sequence;

1C. obtaining from input audio small slices of audio each of very short time duration;

1D. sequence of the slices of audio data is scrambled, with some slices removed, replicated, swapped, moved, averaged, or otherwise altered;

1E. resulting audio slices are smoothly joined to construct a new audio content;

1F. new audio content is stored in a storage medium, or delivered to a receiver.

2. A method of processing input audio content according to claim 1, wherein slices of audio content are obtained from input audio by simple cutting and partitioning.

3. A method of processing input audio content according to claim 1, wherein slices of audio content are obtained by copying from sequentially moved positions in the input audio content.

4. A method of processing input audio content according to claim 1, wherein characteristics parameters are calculated for each slices of audio contents, and such parameters are used to construct new slices of audio to be scrambled and used to construct new audio content.

5. A method of processing input audio content according to claim 1, wherein two audio slices are smoothly joined by calculating a weighed average of sample data from the first slice and the second slice, with the weight for first slice is gradually reduced and the weight for the second slice is gradually increased accordingly.

6. An apparatus of embodiment using the method according to claim 1.

7. An apparatus that stores audio content created using the method according to claim 1.

8. A method of obtaining input audio content according to method in claim 1, wherein a source audio is obtained from recording or from storage medium, and is processed to obtain input audio in suitable format for processing by method according to claim 1.

9. A method of processing output audio created by method according to claim 1, wherein the output audio content is converted to audio content in suitable formats for useful purposes.

10. A method according to claim 1, wherein visual content is processed instead of audio.

11. An apparatus of embodiment using the method according to claim 10.

12. An apparatus that stores visual content created using the method according to claim 10.