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 http://www.beis.de/Elektronik/DeltaSigma/SigmaDelta.html
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!
>
>Danny
>
>- 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
>file.
>>
>> 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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