Single chip MPEG audio decoder

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 co...

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Veröffentlicht in:	IEEE transactions on consumer electronics 1992-08, Vol.38 (3), p.348-356
1. Verfasser:	Maturi, G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Broadcasting. Videocommunications. Audiovisual Computer interfaces Control systems Decoding Delay Exact sciences and technology Modulation coding Phase change materials Pulse modulation Random access memory Sound broadcasting Streaming media Telecommunications Telecommunications and information theory Transform coding
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Beschreibung
Zusammenfassung:	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.< >
ISSN:	0098-3063 1558-4127
DOI:	10.1109/30.156706