L Mpeg audio Layer 1, 2 & 3 encoder port under OpenVMS                Oct 19984 ====================================================  C The source kit contains ISO mpeg original audio encoder and decoder C (Distribution 10, 1997). Only the encoder is ported under OpenVMS,  : optimised decoder already existing (mpeg3play and mpg123).  O You can find the encoder sources , object and executables files for VAX & Alpha L into [.LSF.ENCODER] directory. This encoder is Mpeg-1 Layer II and layer IIIM capable. However, it is not optimised and you need a fast cpu especially with 
 layer III.  B You need to define MPEGTABLES logical pointing to the codec tables [.LSF.ENCODER.TABLES]   O You can compress at bitrates as low as 128 kbs before really earing artifacts,  ? even with Layer II (however, 160 kbs is safer with Layer II)!!  M At such a bitrate, the resulting Mpeg file of a 44 Khz 16 bits stereo stream  I is 30% smaller than a mono 8 bits 22 Khz WAV file and gives a far better   sound quality.   Patrick Moreau pmoreau@cena.dgac.fr moreau_p@decus.fr 