Quote:
Originally Posted by
jwh1192
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Hi Sascha, I am coming in late in the -40db bug. I have seen some live recordings come across my desk with pretty low levels. may I ask what recordings you are seeing at these levels. are they from Live Recording Captures ??? or ??? thx sincerely curious. and I will check this when I get back home from a funeral later this week.
In my case those low levels are a result of trying to find a) proper and b) reproducible input levels for amp sim plugins (which I am using quite a bit).
The main thing being that usually most amp sim plugins have their input level sweet spot to deliver "normal" (as intended) resulty quite a bit below 0dB. A lot lower than what would be "conventional recording 101 wisdom" (which would be to get as close to 0dB and then dial back a bit for some headroom).
Also, I want to use my pedalboard every bit the same as I would with physical amps (or modelers), which would include using boosting pedals.
Now, I could as well just say that I'd raise my input gain and dial the level back using the input trim of whatever plugin or an additional gain plugin. Which defenitely works well when just plugging in straight. But it doesn't cover the required headroom for the mentioned boost that may come from my pedalboard.
In addition, the most reliable way to do all this would be to keep my interface's input gain at one fixed setting. Which would be dialing it down all the way to zero (with my Motu M2 at least, but it's valid for many interfaces). That would be the only setting to cover any level from my weakest guitar to the hottest with some boost added (and I defenitely want those differences to be represented in my DI tracks, in the end it's the only way things work as with real amps).
And finally, add to this that I'm using my volume pot quite a bit for cleaning up dirt sounds. Again, just as I would do with real amps.
Hence I will end up with a situation that should cover any input from my weakest guitar /w the volume backed up to my hottest guitar with some additional external boost.
The only way to really do so is to dial my input trim all the way counterclockwise. And even with that setting, I sometimes need to be careful with the external boost as levels might already result in some clipping.
Now, one may or may not believe in that method, but it has been carefully explored by people really in the knows about all that stuff. In case you're interested:
https://thegearforum.com/threads/cal...r-plugins.816/
I will also add that this method is working *extremely* well for what I'm doing, how I'm usually dealing with sounds and what not (and it took me a while to be turned into a "believer", which you may as well be able to see in case you read the thread linked above).
Anyhow, using this way of "calibrating" my levels, it's pretty easy to run into recordings peaking well below -40dB. And why not? It works perfectly well and 24bit audio still delivers plenty of dynamic range below that to never become an issue.
If only it wasn't for Logic. And it's not just that things wouldn't raise visibility issues already due to Logic's pretty bad waveform display in the arrange, no, now it's even that the wavefiles aren't recognized properly, so some functions simply don't work anymore, most annoyingly the waveform zoom. So in case I recorded something with a rather low output guitar and the volume dialed back, there's *zero* visual clues about the waveform anymore.
And it's not even that this would only happen with extreme settings. Even if I would raise my input trim while leaving some rather typical headroom, as soon as you're dialing back a guitar's volume pot, levels peaking below -40dB are easily reached, especially when you try to clean up a pretty well overdriven amp (and that's quite a common way to shape guitar sounds).
Ok, sorry for the lengthy explanation, but as I have already been accused of doing things "wrong", this was possibly necessary to explain that I'm not deliberately failing or trying to create a hypothetic scenario. In fact, I only stumbled across that bug because I took great care to properly calibrate things to work well with various amp sims.
And finally, even if this might only apply to very little folks (Logic users also using amp sims, also following that very calibration method, also using their guitar's volume pot might result in a pretty small group of people), for a DAW this very defenitely is inacceptable behaviour, as it's roughly ignoring around 2/3 of the possible dynamic bandwidth of 24bit audio for some functions.
And it was only introduced with L11. And it hasn't seen a fix throughout 3 (or 4?) updates.
IMO this shouldn't even have happened in the first place - and it's likely a sign of them to either have too little testers overall, too little decent testers or they'd simply be ignoring things. None of which would be appropriate for the flagship DAW owned by the richest company in the world.