Oryoki,
Very interesting. The Zaxcom site says
"The final audio files are bit for bit exactly the same as the original
recorded audio."
Bit for bit would be lossless. This is obviously proprietary
technology and will benefit the Zaxcom customers. Other manufacturers
will either have to develop or licence this type of technology for a
broader audience of recording customers to be able to get more storage
for their money.
I have used very good sounding compression schemes, like Rolands
"Roland Digital Audio Coding" (R-DAC), which they claim to be lossless,
but I don't think they have ever claimed or demonstrated that it is
always bit for bit identical to the original. I have thought the term
lossless was thrown around loosly, using only subject judgement as the
'proof'. I see that at least Zaxcom is defining the term. That is
good. It can be measured and tested emperically and objectively.
thanks,
bret
--- wrote:
> Bret wrote:
>
> >...unless truly lossless realtime compression
> >is developed.
>
> There are several lossless compression
> technologies today. Lossless compression
> is a relatively simple algorithm, and can
> be added to the data stream in real time.
> The reason lossless compression is not used
> as the sole method of saving storage space
> is that lossless does not reduce file size
> as much as the highly processed "instruction
> sets" that result from ATRAC or MP3 processing
> do. Space is at a premium in minidisc or
> MP3 players that fit in your pocket and need
> to play for hours.
>
> Zaxcom, makers of the DEVA field recorders,
> plans to add a lossless compression option
> to their new recorders. The new file
> format is called .ZAX, and compresses
> the audio stream by 50%-66% as it is
> being recorded to the internal hard disc.
> Read about their plans at URL
> http://www.zaxcom.com/audio/devas.shtml
>
> --oryoki
__________________________________
Do you Yahoo!?
New Yahoo! Photos - easier uploading and sharing.
http://photos.yahoo.com/
________________________________________________________________________
________________________________________________________________________
|