home *** CD-ROM | disk | FTP | other *** search
- ISO-MPEG Audio Layer 3 software only Encoder and Decoder for PCs
- Version 1.00.
-
- 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) or
- in RIFF/WAVE format as used by Microsoft Windows .WAV files
- - 44.1kHz sampling frequency (look for 32 kHz and 48 kHz in the near future)
- - packed bit stream conforming to ISO/MPEG Layer III
- - output of decoder is in raw format (16 bit signed integer) or in
- RIFF/WAVE format as used by Microsoft Windows .WAV files
- - .WAV music files can be played with Windows Media Player.
- - optional decoder output as 24 bit hex ascii data
- - written by the very same people at Fraunhofer-IIS who did the
- Layer III codecs for the ISO and ITU-R (former 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
- L3DEC.EXE decoder program
- bstr100.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
- history.txt infos on the history of this shareware product
-
- L3ENC uses one of the dos extenders EMX.EXE or RSX.EXE. These dos extenders
- are NOT written by Fraunhofer IIS. They are supplied together with the
- Layer 3 shareware package for convenience. The files are:
-
- emxrt.zip contains emx.exe
- dpmigcc3.zip contains rsx.exe
-
- Please read the documentation and copyright infos accompanying the
- dos extenders.
-
- The song used for BSTR100.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).
- BSTR100.L3 was encoded using the encoder of this shareware package.
-
- 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.
- They 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 software-only decoder needs about 3 minutes for the
- decoding of 1 minute of stereo audio data. The encoder needs about
- 14 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
-
- A version of this shareware for SUN workstations is also available. On a
- SPARC station 10 the decoder works in real time, the encoder takes about
- 5 minutes for the encoding of 1 minute of stereo audio data.
-
-
- 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.
-