Title :
Real-time implementation of the MPEG-2 audio codec on a DSP
Author :
Chen, Jing ; Tai, Heng-Ming
Author_Institution :
Dept. of Electr. Eng., Tulsa Univ., OK, USA
fDate :
8/1/1998 12:00:00 AM
Abstract :
This paper presents the implementation of MPEG-2 layer 1 audio coding and decoding system on a general purpose fixed-point DSP chip. A modified coding algorithm that alleviates the edge effect is described. This scheme encodes data in frames adjacent to the current frame so that data is closely correlated between frames. Results from the DSP real-time implementation are examined. Bit-rates from 74 to 138 kbps for the signals tested are attainable with transparent quality signal reconstruction
Keywords :
audio coding; codecs; digital arithmetic; digital signal processing chips; real-time systems; 74 to 138 kbit/s; MPEG-2 audio codec; MPEG-2 layer 1 audio coding; bit-rates; decoding system; edge effect; field-point DSP chip; frames; modified coding algorithm; real-time implementation; signal reconstruction; Audio coding; Bit rate; Codecs; Decoding; Digital signal processing; Digital signal processing chips; Frequency; Quantization; Real time systems; Sampling methods;
Journal_Title :
Consumer Electronics, IEEE Transactions on
