| The need for significant reduction in data
rate for wide-band digital audio signal transmission and storage has led
to the development of psychoacoustics-based data compression techniques.
In this approach, the limitations of human hearing are exploited to remove
inaudible components of audio signals. The degree of bit rate reduction
achievable without sacrificing perceived quality using these methods greatly
exceeds that possible using lossless techniques alone. Perceptual audio
coders are currently used in many applications including Digital Radio
and Television, Digital Sound on Film, Multimedia/Internet Audio, and Electronic
Music Distribution (EMD).
In this course, the basic principles of perceptual audio coding will be reviewed. State-of-the-art audio coding schemes, e.g. AC-3; MPEG Layers I, II, and III (MP3); MPEG AAC; MPEG-4, will be presented. In-class demonstrations will allow students to hear the quality of state-of-the-art implementations at varying data rates and they will be required to program their own simple perceptual audio coder during the course. |
The course on Perceptual Audio Coding (Music 422/EE
367C) is offered annually during the Winter Quarter. The class meets Fridays
from 2:15 pm to 4:05 pm in the CCRMA classroom at the newly remodeled Knoll.
(map).
Song Hui Chon (shchon@ccrma
|