Protection for Web Delivered Music

1. Protection for Web Delivered Music Patcharinee Tientrakool EE 6886: Topics in Signal Processing - Multimedia Security System

2. Digital Music Distribution • Online music store • e.g. iTunes music store • Internet radio • Peer-to-peer network • e.g. KaZaA PROTECTION

3. Main Technologies for Music Content Protection Encryption Watermarking Help when an object is transmitted through a channel Prove copyrights Trace illegal distribution

4. Creation of Protected music content Watermark Encryption Key Plain music Watermarked music Protected music Watermark Embedding Encryption

5. Scope of study • Watermarking techniques for web delivered music content • DRM systems currently in the market

6. Watermarking Music sheet Audio file in image files or while printing e.g. real time watermarking

7. Audio watermarking • LSB coding • Watermarking the phase of the host signal • Echo hiding • Spread spectrum watermarking • Methods using various characteristics of the host audio

8. Music sheet watermarking • Grayscale Approach • Pixel Based Approach • Staff line-Modulation • Block Based Data Hiding • Symbol Oriented Approach • horizontal distances • thickness of some musical symbols or their elements • orientation or shape of musical symbols

9. Scope of study • Watermarking techniques for web delivered music content • DRM systems currently in the market

10. Digital Rights ManagementSystems(DRM systems) • Architectures for protection of IPR. • Several components : user identification authentication encryption copy protection copy control access control digital watermarking digital fingerprinting pay systems license agreement

11. Currently available in the market

12. Scope of study • Watermarking techniques for web delivered music content • DRM systems currently in the market