Sample-Rate Problem [I Done F****d Up Good]!

algorhythm · Post by **algorhythm** » Tue Nov 20, 2001 2:44 pm

OK - So I took my Pulsar DAW to a "real studio" today. My purpose was to bounce a track off of an ADAT thru Pulsar Lightpipe to Hard-Disk. Setup was cake (hurrah for Pulsar!!!), and the studio tech really dug my rig (hurrah for Pulsar!!!). Everything seemed fine. I quickly checked that all of the tracks recorded, and played them back real quick to ensure everything was fine. And it was, or so it seemed.

Now at home, I am editing, and I notice that all of recorded ADAT tracks are playing back noticably slower. Thinking back, I remember switching the ADAT machine from 48 to 44.1khz right before recording. Honestly, this is only my second time using an ADAT, and my guess is that I originally recorded to the ADAT at 48khz and then recorded thru pulsar to hard-disk at 44.1khz. This would cause the slow-down I have encountered, right? It isn't just a matter of switching Pulsar to 48khz, because the stuff is already recorded.

Now to the real questions:
Am I S.O.L.? I know I should just record them again at the correct sample rate, but I do not want to go thru the hassle.

How does one go about calculating the time-changing i need to do to correct the length so that it will play back at proper speed.

Thanks for any help, or resources which you can point me towards.

peace,

at0m · Post by **at0m** » Tue Nov 20, 2001 9:01 pm

1) In SoundForge you can change samplerate without changing a sample's pitch.
So if the recorded material was originally at 48kHz, and you set the ADAT to 44.1kHz, you just recorded everything at a lower speed and with the original bits'n'bites.
You could set samplerate of the .wav's to 48kHz, and all should be ok. Nothing but the samplerate should be changed in that process.

2) You could just set Pulsar's clock to 48 kHz, so that waves play back in their original format.

Are your new waves pitched too? I suppose yes. Then you can use *ONE* of the above workarounds.

You'll have to keep all further samplerates at 48kHz. I know, might not be convenient, but sample rate conversions are no good for your sound.

I believe that is the best way to solve your prob, algorhythm.

at0m · Post by **at0m** » Tue Nov 20, 2001 9:12 pm

I think there should be no reason to be worried, algorhythm, just make sure Pulsar is at 48kHz. You will have the EXACT copy of what you recorded

btw, what does 'S.O.L' mean? And while we're at it 'For Example' = 'ie.', but what does 'ie.' stand for?

cheers mate,

the atom.

Stubbe · Post by **Stubbe** » Tue Nov 20, 2001 11:13 pm

Stumbled over the S.O.L thingie too, isn't it amazing what new abbreviations we learn on the net all the time

Well, 'ie' is an older one, meaning 'in effect' AFAIK.

CUl8R

Cheers
Stubbe

JoeKa · Post by **JoeKa** » Tue Nov 20, 2001 11:13 pm

On 2001-11-20 21:01, atomic wrote:
...I know, might not be convenient, but sample rate conversions are no good for your sound...

I don´t see that point, I´m setting up my tracks´n´samples at 48 only, as far as possible, and convert them down to 44.1 in their very last step. I have a measurable gain in the heights by doing so...
I like the ADAT format with its 48/24, I think it´s a good compromise between the CD´s and the DVD´s resolution, not taking up too much of my hardware´s ressorurces and giving me the opportunity to mix down smoother in work with a feelingly proper sound quality. But of course, multiple changes of samplerates is not the best way to go...

algorhythm · Post by **algorhythm** » Wed Nov 21, 2001 6:44 am

ie. means for example, and AFAIK means as far as I know, so they are a bit different.

S.O.L. means = shit outta luck

thx, I will try your suggestions.

Funktastico · Post by **Funktastico** » Wed Nov 21, 2001 9:04 am

ie. does not mean "in effect" or "for example".
ie. comes from latin: "id est" = "that is".

BTSG = Back to school guys ...

Toni L.
http://www.mp3.com/NativeAlien

<font size=-1>[ This Message was edited by: Funktastico on 2001-11-21 09:09 ]</font>

at0m · Post by **at0m** » Wed Nov 21, 2001 10:22 am

On 2001-11-21 09:04, Funktastico wrote:
...
ie. comes from latin: "id est" = "that is".

BTSG = Back to school guys ...

Toni L.

Thanks Toni!

So my 4 years of Latin at school (9-6hrs/week!) weren't that successfull

Hope my audio goes better

algorhythm · Post by **algorhythm** » Wed Nov 21, 2001 3:41 pm

OK - I fixed the problem. Thanks.

check the music section for the result.