What DAT machine are you getting this from?

What was it recorded on?

What are you recording it through into your PC?
What driver modes have you tried ? ASIO/Wave?

Peter

1) Fostex D-5.
2) No idea, old radio log tapes.
3) SPDIF>M Audio Firewire 410>1394>Vegas
4) ASIO only.

The 410 seems to lock OK to the SPDIF but at 16/32K Vegas complains that bit/sample doesn't match when I arm record.

Only tried V5, can try V6 and V7 if you think there's any difference.

Bob.

Thanks for the info.

I looked at my DAT and it does not support 12 bit/32 only 16 bit/32.

Is it 12/32 or 16/32? You subject says one thing, but this msg says 16/32.

Have you set Vegas' project rate to 32 and bit depth to 16? We do not permit the sample rate/bit depth on input to be different than the output settings.

Peter

DAT tapes don't do the 12 bit you're suggesting.
If you look at the MAudio product page:
http://www.m-audio.com/products/en_us/FireWire410-focus.html

You'll find this:
sample rates: 32kHz to 192kHz (192kHz on line outputs 1 & 2 only)
44.1kHz, 48kHz and 96kHz (S/PDIF I/O)

So the problem is not vegas, it's Maudio. I'm sure that info is in the MAudio manual.

Jesse

Jesse:
DAT does 12bit/32Khz in long play:
http://www.fostex.com/support/pdf/fostex/d15/d5_d15_brochure.pdf

I'd dig up some more specs on DAT recorders but it's so common I'd suggest it was a standard. On these 180 minute tapes it was used to fit 6 hours of audio onto one tape, seems to have been common practice for radio station logging a few years ago, hardly stellar quality but good enough for AM radio.

The M-Audio seems to handle it just fine, playout the 12/32K from the deck over SPDIF and the M-Audio locks to the clock and plays the audio out the analogue ports.

SonyPCH:
The tapes are 12/32K, I was trying Vegas at 16/32K as there isn't a 12/32K project option. Why was I trying that, well when capturing 12/32K from DV tape Vegas converts it to 16/32K so I figured I'd try that but no go, Vegas reports that the sample rate / bit depth doesn't match the audio device's settings.

None of this is really important to me, I can capture the audio from the tapes via the analogue outputs from the deck anyway, the minute loss of quality doing that will be nothing compared to how bad they are to start with!

It's just that this is another case of a format that uses 12/32K which again Vegas doesn't appear to support correctly.

Bob.

Again, what is the _EXACT_ error msg that Vegas is giving you?

>>I'd dig up some more specs on DAT recorders but it's so common I'd suggest it was a standard. On these 180 minute tapes it was used to fit 6 hours of audio onto one tape, seems to have been common practice for radio station logging a few years ago, hardly stellar quality but good enough for AM radio. <<

It would require that we have such a device to even determine what is going on. We don't currently.

Do you have other hosts that do support this format?

Do you have another audio card that has SPDIF inputs to see if it works?

>>It's just that this is another case of a format that uses 12/32K which again Vegas doesn't appear to support correctly.<<

I am looking through everything in the ASIO spec, and there is no 12 bit format defined. There is no way for us to tell the ASIO driver to use 12 bit and no way for the driver to tell us it is sending 12 bit data.

There are 12, 24, 32, bit formats defined by ASIO.

It would make sense that the driver would translate 12 bit to 16 bit, and report as such.

I will try to look at it, but with out hardware that produces 12 bit audio to connect to a sound card, I don't think it will happen.

Peter

Peter,
thanks for trying to sort this out but I think there's no chance to get this to work for several reasons.

Just as a bit of general background and I should have pointed this out before. Neither of my DAT decks specifically say they record 12/32K! There's a record option switch on both the Sony DTC 750 and the Fostex D-5 labelled LP, 48, 44.1. It's in Long Play that they record at 12/32K, tape runs at half speed and the bit depth and sample rate is dropped back to 12/32K.

The Firewire 410 does appear to lock to the External SPDIF however when I checked the Sample Rate it's reporting it 88,200Hz! The remarkable thing is it decodes it OK judging by what comes out the phone and line outputs.

Now I could get Vegas to record from it by setting the project to 88,000Hz however what I got was pretty close to total garbage, looks like it only got 8 bits of the 12 bits! So yes, I'd say you're right, the ASIO drivers just don't support this and it was only a fluke that the 410 somehow managed to cope.

Thanks again, like I said recording from the line outs of the deck is really no problem.

Bob.

I discovered that my Sony DAT does support the 12 bit long play/rec mode.

I connected it to a number of different SPDIF connections. Yikes! Most did not like it at all. They did the pass through correctly, but when the ASIO driver was interogated for support formats, it failed.

I am stil messing around with it, but it looks like ASIO did not predict this or driver developers never considered such a scenario.

I will contact a few others on this to see what I can find out.

(I love a challange!)

Thanks
Peter