mellotron samples

[WeAreAs1 at aol.com]

In a message dated 6/2/99 12:49:12 PM, you wrote:

<<Something that works pretty well is to delta encode the PCM (first output   
sample in each channel is
actual 16-bit valueof first input sampel, all following output samples   
are the difference between the
corresponding input sample and the previous input sample) and then use   
ZIP on it.  The delta encoded
values have much more redundancy in the high byte than the original   
source.  Of course, there is no
file format that I know that directly supports this.>>

Both EMagic and Waves, Inc.  have some kind of proprietary file compression 
software for use with audio files.  They are probably using some variation of 
the above process.  I think they both claim about 60% file size reduction.  I 
don't think either of the formats is in very wide use - most professionals 
don't want to bother with another step in their archiving process, and CDR's 
are so cheap these days!

Michael Bacich