Another lossless coded is MLP - Meridien Lossless Packing, used in
DVD-Audio. I've never heard of any tools for using it in the real
world - only encoders for DVD.
-j
>Actually I was looking to see what advantage it has over FLAC.
>They speak of it being faster in decode. We will see. I would rather
>have had them use FLAC if that is the only difference.
>
>But Zaxcom is very expensive and FLAC is very free.
>
>Bret, you can play with FLAC files or play with the code to confirm
>to your satisfaction that it is bit perfect.
>
>Rich
>
>--- In Bret <> wrote:
>> 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
>>
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jeremiah lyman moore | san francisco | sound+media |
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