Clean Audio for TV broadcast: An Object-Based Approach for Hearing-Impaired Viewers - April 2015
Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
Sound Board: Food for Thought, Aesthetics in Orchestra Recording - April 2015
A New Audio Bit Rate Reduction System for the CD-I Format
This paper describes a newly developed audio bit rate reduction systems for the CD-I (Compact Disc Interactive) format. The bit rate reduction system is based on the fact that the spectrum and amplitude distribution of audio signals tends to be concentrated in a certain region. We have developed an algorithm of the bit rate reduction system and built both an encoder using DSPs and a dedicated decoder LSI. The present system allows us to record and reproduce audio signals of three different bit rates to match specific applications. Level A: Audio signals whose quality is almost the same as that obtainable with compact discs, using 309 Kbits/second per channel. Level B: Audio signals of slightly lower quality than Level A, but still suitable for high-quality music, using 159 Kbits/second per channel. Level C: Audio signals for recording and reproduction of high-quality speech, using 80 Kbits/second per channel.
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.