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ISO MPEG Layer-3 Compression Technology
Layer 3 is part of the MPEG audio coding standard defined by the ISO/IEC WG11 committee. MPEG audio comprises three coding techniques: Layer-1, Layer-2 and Layer-3. These layers provide increasingly better audio quality at equal compression ratios (or increasingly higher compression ratios at equal audio quality). With the advent of the MPEG2 Layer-3 audio coding standard, the range of possible compression ratios was extended. Today Layer-3 achieves compression ratios of
1:12 for CD quality (i.e. no perceptible difference to the original signal in a consumer type listening environment) 1:24 similar to FM stereo quality, 1:48 at better-than shortwave quality, 1:96 for very low bitrate connections,
Because of these high compression ratios, Layer-3 is the supreme choice for all internet audio transmissions. But there is more! Check out the details.
Technical Info Links
MPEGLayer3Player Version 1.4 beta 2 now
Here we are for MACs ! - ( Brandnew version to be tested )
Download your FREE and UNSUPPORTED BETA version of the new MPEG Layer-3 Players with graphical human interface ! Report your experiences to us.
Registered and Supported Versions of WinPlay3 are available at OPTICOM !
WIN16: WinPlay3 Version V2.3 beta5 released 23.05.1997
WIN32: WinPlay3 Version V2.3 beta5 released 23.05.1997
Power Macintosh: MPEGLayer3Player Version V1.4 beta2 released 27.05.1997
See also our ISO MPEG Layer-3 Page with sound examples and more downloadable SW also for other operating systems and our FAQ about ISO MPEG Layer-3 by Fraunhofer Institute IIS. And if you would like to have a little clip accompanying the fine MPEG Layer-3 sound, have a look to our VIDEO-Page !
Homepage of our institute - Fraunhofer Institute for Integrated Circuits (Fraunhofer-IIS)
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Homepage Fraunhofer Gesellschaft e.V. - Our parent company
Company Links (Addresses)
Some companies engaged in ISO MPEG Layer-3 and cooperating with our institute (FhG-IIS). Those companies do market their products themselves.
ISDN and telephone codecs
ISDN codecs, PC boards
Contract research, consulting
Shockwave audio streaming
Multimedia client / server
Hardware & software solutions
Multimedia chip card
Auido on Demand
ISDN codecs (e.g. ZEPHYR)
Digital satellite broadcasting
Munich, 102nd. Convention
New York, 103nd. Convention
Microsoft: Fraunhofer IIS, a technology partner for NetShow
Mar. 10, 1997: Microsoft:
"The new Fraunhofer Gesellschaft e.V. (FhG) codec included with NetShow 2.0 offers stereo sound at Internet bandwidths and CD-quality sound at higher intranet bandwidths to thousands of listeners."
whatsnew: Improved Quality of Content
benefits: Broad Variety of Audio and Video Compression
Dec. 10, 1996: Microsoft: Fraunhofer's MPEG Layer-3 for Microsoft's NetShow
Okt. 31, 1996: PC Magazin Online: WinPlay Music From Your Desktop
Sep. 26, 1996: Worldspace: Successful demonstration of satellite direct audio
ADDRESS Fraunhofer Institut für Integrierte Schaltungen-A
Am Weichselgarten 3; D-91058 Erlangen; Germany
Tel.: +49 (0) 9131/776-301; Fax: +49 (0) 9131/776-399
EMAIL: firstname.lastname@example.org; http://www.iis.fhg.de/audio/
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Copyright ©1997 Fraunhofer-Gesellschaft IIS-A