Injecting auxiliary data into a digitized audio stream has been used in watermarking technology that is intended to create copy protection and rights tracking. This application requires robustness and defense against attacks. There are however nonsecure applications that use auxiliary data to enrich the program content, and bit rate is far more important than robustness. The proposed application, using uncompressed PCM audio signals, applies the Quantization Index Modulation technique on the (Integer) Modified Discrete Cosine Transform (MDCT) coefficients of the signal. To achieve inaudibility of the injected information, a psychoacoustic model is used at the embedding stage to exploit the properties of the human auditory system.
https://www.aes.org/e-lib/browse.cfm?elib=17335
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.
Learn more about the AES E-Library
Start a discussion about this paper!
