home *** CD-ROM | disk | FTP | other *** search
- ISO-MPEG Audio Layer 3 software only Encoder and Decoder
- Version 0.99a.
-
- copyright Fraunhofer - IIS 1994
-
- - evaluate highest quality perceptual audio compression technique
- available today
- - software only encoder and decoder implementations
- - implements ISO/MPEG Audio standard ISO/IEC IS 11172-3, Layer 3
- (restriction: no support of Layer I and II, no realtime)
- - wide range of compression ratios including
- 6:1 fully transparent quality
- 11:1 64 kbps per channel, very high quality
- 16:1 still better than your average 16 bit 44.1 kHz sound card
- - music data is input in raw format (16 bit signed integer)
- - 44.1kHz sampling frequency (version 1.0 supports also 32 kHz and 48 kHz)
- - packed bit stream conforming to ISO/MPEG Layer III
- - output of decoder is in raw format (16 bit signed integer)
- - optional .WAV header for decoder output data. Resulting music files
- can be played with Windows Media Player.
- - written by the very same people at Fraunhofer-IIS who did the
- Layer III codecs for the ISO and CCIR tests (best sound quality at
- low bit rates at all listening tests).
- - commercial real time products for encoding and/or decoding of
- Layer III are available. Contact one of the companies listed
- in the file info.txt.
-
-
- The package consists of the following files
-
- L3ENC.EXE encoder program (8088)
- L3ENC_FP.EXE encoder program (80486)
- L3DEC.EXE decoder program (8088)
- L3DEC_FP.EXE decoder programm (80486)
- bitstr.l3 demo layer 3 bitstream (128 kBit/s, stereo, 44.1 kHz)
- manual.txt instructions for encoder and decoder programs
- register.txt information on registration. PLEASE READ THIS!
- info.txt infos on ISO MPEG Layer III and Layer III products
- readme.txt this file
-
- The song used for BITSTR.L3 is named "funky" and was composed and
- arranged by Juergen Herre. "Funky" is copyright Juergen Herre 1994.
- You may use "Funky" for all evaluation purposes of this shareware product.
- You may not use "Funky" for commercial purposes (e.g. radio broadcasting).
-
- This package is distributed as shareware. You may work with the package for
- 30 days for evaluation purposes. If you want to use this package after the
- evaluation period, you are required to register the package (see information
- in the file REGISTER.TXT). You may give copies of this package to other
- people as long as no file is changed and no file is omitted.
-
- The programms are written for IBM-PCs or Compatibles with MS-Dos. While
- L3ENC.EXE and L3DEC.EXE should work on practically any PC, the other
- programms require a 386 type CPU plus hardware floating point support.
- Especially for the encoder, a 486DX33 or better is recommended.
-
- On a 486DX2/66 the performance of the software-only decoder is about
- 33% of the performance necessary for real time audio processing. The
- encoder needs about 30 minutes to encode a 1 minute audio data file.
- These figures assume coding/decoding of stereo audio material
- at 44.1 kHz/sec.
-
- If you need further information on Layer 3 products or if you have
- any questions concerning this shareware product, please send email to
- layer3@iis.fhg.de.
-
- You can also fax or mail your questions to
-
- Layer 3 support
- Fraunhofer - IIS
- Am Weichselgarten 3
- D-91058 Erlangen
- Germany
-
- Fax: + 49 9131 / 776 399
-
- We would also like to hear from you, if you are interested in a version
- of this shareware for SUN workstations.
-
-
- Disclaimer:
-
- Don't forget that there are no warranties associated with this software.
- While we believe that our software is reasonably bug free and well behaved,
- we are in no way responsible if our software does not work the way you
- would expect it to work. No matter if it locks up your computer, garbles
- your floppy disks or does any other harmful things to your computer - it
- is entirely your problem.
- Fraunhofer - IIS is not liable for any infringments or damages of
- third parties' rights in consequencs of your use of this shareware
- product. Fraunhofer - IIS is in no event liable for, respectively does
- not warrant the trustworthiness, quality, industrial exploitability,
- serviceability of this shareware product for the supposed purpose
- or any other purposes.
-
-
- All brand names are registered trade marks of their respective owners.
-