just few notes about the Korg MR-1000 you mention in your email:
besides long (endless!!) discussions about DSD quality vs standard
PCM, I note three problems with this unit:
1 - mic preamplifiers are noisy like a M-Audio MicroTrack
2 - when you play DSD directly to analog out you get a lot of high
frequency noise above 50 kHz unless you set the sharpest low-pass
filter (but this negates the claimed advantages of the high DSD
bandwidth). Of course you don't hear that hiss, but your delicate
tweeters can suffer if you pump up the volume too much (maybe you dog
or your bats will not be happy...)
3 - related to 2 - when you convert to PCM (or record directly to
PCM), maybe at 192 kHz to get all DSD details, your file will be
contaminated by the same high frequency hiss I mentioned at point 2.
When editing files you'll never see a clean thin horizontal line
between bird notes: you'll see there the high frequency noise!!
Again, when converting with AudioGate you'll be able to add some low
pass filtering ... but again this will reduce the supposed advantages
of recording at high rates (for example for recording bats...).
For those interested in recording ultrasounds, bats for example, this
technology seems promising.... unfortunately the noise I mention
reduces the available dynamic range above 50 kHz to about 60-70 dB.
To be accurate, I'm talking about recording DSD at 5.6MHz; recording
at 2.8MHz moves the high frequency noise at lower frequencies (>
25-30kHz) as mentioned some time ago for the Korg MR-1.
Gianni
At 06.29 25/07/2007, you wrote:
>Hello everyone,
>I am very happy to have discovered this group. My name is clint
>williams. I live in New Zealand. For the last few months I have been
>looking for info on good....no...VERY GOOD solid state recorders. My
>main interest is in sampling sounds and FX mainly for computer music
>however I also have a passion for birdsongs and environment ambiances
>and a love of sound in general. I have quite an extensive home studio
>built around a fostex 8 track reel to reel and 2 track machines with a
>collection of analog synthesizers all a bit redundant in this computer
>age and I am still floundering my way around computers having not
>quite jumped completely on the bandwagon so to speak as I have been
>daunted by the rapid change in PC/digital technology. I am preparing
>myself for a fast learning curve...having left it late. I would be
>gratefull for advice on field recorders and while i have looked thru
>some old posts I hope some sympathetic person of much wisdom can point
>me in the right direction.
>I am considering the following machines: FostexFR2LE, Edirol R09,
>Marantz PDM671, or the Korg MR1000 (which I Know is disc based and not
>strictly a solid state unit) Looking thru the specs of these they all
>seem to have something I like and shortcomings elsewhere. I exclude
>the sound devices on price alone. Sony has a machine that hasn't been
>dicussed on this forum (PCM D1) and niether has the Korg MR1000 and
>the 1bit rate DSD behind this technology looks very exciting to me,I
>only wonder if the transfer to PC of recordings done on a machine of
>this calibre are maintained to the same integrity given that we don't
>have sound cards of this spec yet that I know. can any of these
>machines double up as sound cards for the PC for my other
>equipement when not used in the field.
>My requisites for a good recorder are: sound quality, ruggedness,
>portabilty, battery life (I like the fact the Marantz has on board
>charging ability without need for separate charger)however a recent
>user of the PMD671 remarked about less than excellent preamps. Other
>important features would be long record times, XLR in, Phantom
>power...etc you folks can remind me what I forgot to mention.....Plus
>a good shotgun mics (I am looking at sennheiser K6 series or
>RodeNTG1/2 .I am also interested in parabolics and quality monitoring
>headphones (closedback?). As you can see I need your
>helpful advice.
>Then theres the Pc soundcard to buy and looking at the Motu ultralite
>unless any of these recorders can double up.
>Lastly does anyone know of a reputable US retailer that sells
>international as prices in US look much cheaper than local?
>Thankyou.
>
>regards clint
>
>
>
>No virus found in this incoming message.
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Gianni Pavan
Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Universita' degli Studi di Pavia, Via Taramelli 24, 27100 PAVIA, ITALIA
Phone +39-0382-987874 Fax +39-02-700-32921
Email
Web http://www.unipv.it/cibra
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CIBRA organizes the XXI IBAC Congress, Pavia, 15-18 September 2007
http://www.unipv.it/cibra/xxi_ibac.html
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