[ProAudio] DAT Transfers

[Glenn Meadows]

And some daws have an option for real time.conversion to the internal rate 
selected in the daw. Most allow you to switch that on or off.

Glenn Meadows

On April 7, 2021 10:01:04 AM Bob Katz via ProAudio <proaudio at bach.pgm.com> 
wrote:
> Dear David:
> The MOTU interface does not have any available SRC and it does not have an 
> option to sync to the USB, ever. Which is a good thing given the nature of USB.
> In fact, ALL USB interfaces give you clock options based on their I/O 
> sections (AES, SPDIF, Analog), not on their connnection to the computer 
> (USB). Generally the USB just carries DATA between the computer and the 
> interface, and any clock that may be in the USB is ignored. Industry 
> practice is to try to ignore any clock in a USB line and to use a handshake 
> and FIFO method to exchange data via USB.
> The MOTU can only sync to AES/EBU or wordclock or SPDIF or be on internal 
> clock. The DAW itself may or may not do bad things with sample rate. You 
> want to avoid those sorts of DAWs (the kind that adapt to any incoming rate 
> and perform an SRC on the fly.... ouch! Apple is notorious with that in 
> their operating system. That's why you can intermix any sample rate 
> material in iTunes without getting a glitch, if using an Apple internal 
> interface.
>
> Bob
>
> On 4/6/21 4:36 PM, David Josephson wrote:
>> Bob, what I was getting at is that some of these interfaces sync to the USB 
>> and perform a sample rate conversion no matter what. If the MOTU doesn’t do 
>> that, fine.
>>
>> David
>>
>>
>>> On Apr 6, 2021, at 1:21 PM, Bob Katz via ProAudio <proaudio at bach.pgm.com> 
>>> wrote:
>>>
>>> Dear Jim:
>>> I don't know what David is getting at. If you put your DAT machine on 
>>> internal sync and lock the MOTU via SPDIF or AES/EBU it will do a good job 
>>> capturing the DAT.
>>> The major cautions working in this mode (slaving to the DAT) is some DAT 
>>> machines revert to outputting 48k clock when they are stopped, so you need 
>>> to ensure that the DAT machine is putting out the intended (44.1k) clock 
>>> before you hit record in your DAW. And if you have a MOTU control panel, 
>>> watch what rate it says it is slaved at.
>>>
>>> Best wishes,
>>>
>>>
>>> Bob
>>>
>>> On 4/6/21 2:04 AM, Jim Brown via ProAudio wrote:
>>>> I need to transfer a few dozen DATs to a hard drive for archiving before 
>>>> it's too late to find hardware on which to do it. 20-25 years ago when I 
>>>> was recording this material, I had a tower machine set up as a DAW with all 
>>>> the interfaces needed to do the transfers. It's been 15 years since that 
>>>> machine was booted, and it was more than ten years old then. And I don't 
>>>> remember the logon. :)
>>>>
>>>> So I need advice about hardware. I still have the Tascam DA-P1 on which 
>>>> they were recorded, but I'm not sure it will live long enough. I'll try it 
>>>> first. It outputs S/PDIF, so I need an interface to get into my Windoze 
>>>> machines. All use USB, but I think I might have one with Firewire.
>>>>
>>>> I found a MOTU 8D with USB 2.0 and S/PDIF I/O. David Josephson has 
>>>> cautioned me that some interfaces may not sync well enough to the stream 
>>>> for a clean transfer. Can anyone advise about this particular product? The 
>>>> material is all acoustic jazz with important artists, so quality is 
>>>> paramount. Most if not all of the masters are 44.1.
>>>>
>>>> Can anyone suggest another interface? Also suggestions of a source for a 
>>>> good used DAT if mine doesn't make it through the process? I'll be 80 in 
>>>> the fall, my last recording was 12 years ago, this project is going to be a 
>>>> one-off, so I don't want to spend big bucks if I don't need to.
>>>>
>>>> Thanks, Jim Brown
>>>> _______________________________________________
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>>>> ProAudio at bach.pgm.com
>>>> http://bach.pgm.com/mailman/listinfo/proaudio
>>> --
>>>
>>> If you want good sound on your album, come to
>>> Bob Katz 407-831-0233 DIGITAL DOMAIN MASTERING STUDIO
>>> Author: Mastering Audio
>>> Digital Domain Website No trees were killed in the sending of this message. 
>>> However a large number
>>> of electrons were terribly inconvenienced.
>>> _______________________________________________
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> --
>
> If you want good sound on your album, come to
> Bob Katz 407-831-0233 DIGITAL DOMAIN MASTERING STUDIO
> Author: Mastering Audio
> Digital Domain Website No trees were killed in the sending of this message. 
> However a large number
> of electrons were terribly inconvenienced.
> _______________________________________________
> ProAudio mailing list
> ProAudio at bach.pgm.com
> http://bach.pgm.com/mailman/listinfo/proaudio

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