Buried data techniques can be applied to increase the information density of a CD channel in a backward compatible way. A buried data encoder consisting of a subtractively dithered noise-shaped quantizer encodes an additional service into the CD signal without causing perceptual difference. In this paper we will review the encoder with fixed parameters resulting in a fixed capacity for the additional service. In addition we will describe a method where the encoder parameters are input signal dependent. By exploiting input-signal masking properties a variable capacity of a higher average value is obtained.
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.