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Post by stormymondays on Oct 19, 2019 4:01:34 GMT -6
I'm on an incredibly tight deadline and I need to figure this out. I'm running a session at 48k and got a remote player to do a track. I told him I was working at 48k and sent him an mp3. I received back a 44.1k WAV that plays at the correct pitch but wrong tempo. I don't know what he did or how, I suspect he simply played along to a slower speed version of my track. I checked and the WAV header is not a problem.
It's a pedal steel track, and I'm not sure he'll have time to redo it. He's also just a player, not a technical person.
What are my options? Find a time stretch that works?
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Post by stormymondays on Oct 19, 2019 4:46:01 GMT -6
While I try to get some info from the player, I'm trying some stuff. Here's where I'm at:
1. I changed the WAV header from 44.1 to 48 so it now plays at the correct time.
2. I opened this WAV on Izotope RX and use the Time and Pitch section to lower the pitch by 1.4 semitones. The correct math is 1.467 but it doesn't have that precision.
I have a workable track now, but I wonder if there's a better way, in case I can't get the problem fixed on the player's side.
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Post by kcatthedog on Oct 19, 2019 6:02:57 GMT -6
Do you have another interface, so you could play the original track normally but record it as you want ?
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Post by M57 on Oct 19, 2019 6:38:14 GMT -6
Do you have another interface, so you could play the original track normally but record it as you want ? ..and on the way apply some whatever outboard processing you would have used anyway to reduce the DA/AD reps. |
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Post by sean on Oct 19, 2019 6:54:56 GMT -6
I’ve had this happen before when using an external clock, or ADAT preamp. Session is 44.1 but clock is set to 48K (or other way around). So, mismatched sample rates. Use this to change the header info on the files to the right sample rate: www.railjonrogut.com/HeaderInvestigator.htmWhen you go to import the file in Pro Tools uncheck "convert sample rates to new session format" box. It’ll tell you it will play back at the wrong speed, but it won’t. |
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Post by stormymondays on Oct 19, 2019 7:15:54 GMT -6
I’ve had this happen before when using an external clock, or ADAT preamp. Session is 44.1 but clock is set to 48K (or other way around). So, mismatched sample rates. Use this to change the header info on the files to the right sample rate: www.railjonrogut.com/HeaderInvestigator.htmWhen you go to import the file in Pro Tools uncheck "convert sample rates to new session format" box. It’ll tell you it will play back at the wrong speed, but it won’t. I've used Soundhack for this (I'm on a Mac): www.soundhack.com/freeware/The thing is, when I change the header, the speed of the track is correct but the pitch isn't! I can't figure out what happened here. It's definitely got something to do with the sample rates. What I think happened after some investigation is that he imported my 48k mp3 into a 44.1 session and it got slowed down. Then he played over the slow version. I don't know but I need to fix it on his side, either technically or redoing the track. |
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Post by bigbone on Oct 19, 2019 8:41:22 GMT -6
"convert sample rates to new session format" box when you import the files in ProTools.
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Post by christopher on Oct 19, 2019 9:59:52 GMT -6
Reaper has a straightforward varispeed: it looks like a sideways fader near the tempo under "rate". Right click the fader and you can either: change the pitch like normal, or you can time-stretch and 'preserve pitch'. You can type in the exact rate.. ie 1.467.
(edit: Never tried this, may or may not allow different SR? just keep same SR for both projects, and vari, should work)
You'll want to open two projects... FILE>NEW PROJECT TAB Then you can put your mix in one project and let it play at correct speed, while you mess with the play rate in the other project. Then you can export it. Trying that and splicing and dragging is how I would do it.
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Post by Blackdawg on Oct 19, 2019 17:50:06 GMT -6
Yeah why don't you just upsample it to 48k?
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Post by stormymondays on Oct 20, 2019 8:14:35 GMT -6
Well I sent a new rough mix, this time in “CD quality” (44.1-16bit) and the player played a new track without worrying about sample rate or any technicality. It came out great. I imported it and SRC to 48k. No big deal.
My lesson: when dealing with non-tech people, send the stuff with less possible variables involved.
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