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Re: [gear] one-bit field recorders from Korg

Subject: Re: [gear] one-bit field recorders from Korg
From: "Rob Danielson" danielson_rob
Date: Sun Oct 8, 2006 9:29 am (PDT)
At 4:29 AM +0000 10/8/06, Danny Meltzer wrote:
>Is the idea that the noise floor advantage is retained even though you
>are converting the file to PCM in the end?  If not...what's the point?

Yes, the entire system, not just the converters. My mac also can't
handle 6 channels of 24/192 audio as is.

I whirled through
In theory, its imaginable with challenges like low level field
recordings, that one might have more control with digital post
processing tools. Does any one know: Wouldn't the audio card, audio
application and plugs have to designed to support delta sigma data in
order to reap a significant change?  Rob D.

>what does "generally sounds better" mean?
>Interesting new recorders joining the fray!
>- In  "oryoki2000" <> wrote:
>>  A message appeared on the Tapers Section forum today noting that Korg
>>  is offering two new field recorders.  The fellow who posted the note
>>  saw the recorders at the Korg booth at the AES show in San Francisco.
>>  The first machine is the MR-1, an iPod-size handheld with a pair of
>>  3.5mm inputs, and a single 3.5mm TRS analog output. Data is recorded
>>  on a 20GB hard drive.  Data is transferred via a USB 2.0 port.  The
>>  MR-1 runs on an internal lithium battery.  Estimated price is less
>>  than $800.
>>  The second recorder is the MR-1000, a model designed to be carried
>>  from the shoulder.  The MR-1000 has a pair of XLR and phone plug
>>  inputs, and XLR or RCA outputs. The hard disc is also reported to be
>>  20GB.  USB 2.0 is used to transfer data. Power is from a set of AA
>>  batteries.  Korg describes the MR-1000 as having studio-quality
>>  preamps.  Price is expected to be around $1200.
>>  The machines shown at AES had durable metal cases and high quality
>>  controls.
>>  The most interesting aspect of the Korg recorders is their ability to
>>  record audio as a "one bit" data stream as well as a broadcast WAV
>>  One bit delta-sigma modulation is an alternative to pulse code
>>  modulation (PCM) used in virtually all other recorders.  The Korg
>>  units are the first one-bit recorders I'm aware of that are designed
>>  with battery-powered field use in mind.
>>  The online documents I've looked at this evening indicate that one-bit
>>  recordings have a lower noise floor and generally sound better than
>>  PCM recordings made at rates lower than 24/96. At 24/96 and especially
>>  at 24/192, PCM sounds as good as one-bit.
>>  Fortunately, the Korg machines allow you to choose if you want to
>>  record in one-bit format, or in PCM at sample rates up to 24/192.  So
>>  you can decide which format you prefer.
>>  Included with the Korg recorders is software for Mac or PC that
>>  enables you to convert one-bit recordings into standard PCM formats.
>>  The 20GB hard disc is necessary because the one-bit data stream is
>>  very large.  An hour of two channel recording takes 2.5GB of storage!
>>  Korg plans to release the new recorders in Spring of 2007.  It will be
>>  interesting to explore the features and performance these new machines
>>  provide to the field recordist.
>  > --oryoki

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