Title :
Single chip MPEG audio decoder
Author_Institution :
LSI Logic Corp., Milpitas, CA, USA
fDate :
8/1/1992 12:00:00 AM
Abstract :
An IC has been designed and fabricated which can take an MPEG system or MPEG audio stream and decode Layer I and Layer II (MUSICAM) encoded into 16-b pulse code modulation (PCM) data. Presentation can be delayed and audio frames skipped by means of the channel buffer, an external 256 K bit×4 DRAM controlled by this IC. This allows coarse synchronization of audio and video for skews of up to 1 s for Layer I and 2.5 s for Layer II. Control over which frames are played or provides cue/review features. The MPEG audio IC takes into account system-level, interface, and rate control issues, rather than just the computations involved in MPEG audio compression
Keywords :
audio equipment; large scale integration; 16 bit; 256 kbit; DRAM; IC; LSI; Layer I; Layer II; MPEG audio stream; MPEG system; MUSICAM; PCM data; audio frames; coarse synchronization; interface; pulse code modulation; rate control; single chip audio decoder; Computer interfaces; Control systems; Decoding; Delay; Modulation coding; Phase change materials; Pulse modulation; Random access memory; Streaming media; Transform coding;
Journal_Title :
Consumer Electronics, IEEE Transactions on
