Perceptual Coding using Sinusoidal Modeling in the MDCT Domain
MDCT based perceptual audio coders shape the quantization noise according to simple psychoacoustic rules and general behavioral aspects of the audio signal such as stationarity and tonality. As a consequence, the resulting compressed audio representation has little semantic value making difficult MPEG-7 oriented operations such as feature extraction and audio modification directly in the compressed domain. First results in this perspective are reported using an enhanced version of an MDCT based perceptual coder that implements sinusoidal modeling and subtraction directly in the MDCT frequency domain, as well as spectral envelope modeling and normalization. The implications on the coding efficiency are also addressed.
Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.