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#1
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Is 32-Bit Float broken ?
Here is some weird thing about the 32-bit float setting in ProTools.
Here is a great YouTube demonstration about the benefit of using 32-bit float in Pro Tools https://youtu.be/_pBdcYiEuqY?t=542 That is easily reproducible and quite impressive to see. However, when I tried to do it today it didn't work and the 32-bit float clip still stayed distorted after I reduced the gain. I was 100% it worked when I tried it last year, so I opened an older version of Pro Tools from last year 2018-12 and surprise, it worked. I switched back and forth with different versions and it was constant, any Pro Tools version after 2018-12 didn't work. This is very frightening unless I overlook something here. Is it possible that the 32bit float processing is broken in Pro Tools or does it work differently? Can anybody confirm that or have an explanation for that? Thanks
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Edgar Rothermich Author of "Pro Tools 2020 - How it Works" from the Graphically Enhanced Manuals (GEM) series http://DingDingMusic.com/ YouTube Channel Music Tech Explained https://YouTube.com/c/MusicTechExplained/ |
#2
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Re: Is 32-Bit Float broken ?
mac or windows ?
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Microsoft Windows 11 Home 64-bit OEM DVD Avid OMNI PCIe Pro Tools Ultimate 2023.12 CPU: Intel Core i9-10980XE Motherboard: Gigabyte X299X AORUS MASTER E-ATX RAM: 64 GB Crucial Ballistix Sport LT DDR4 Screen card: MSI GeForce GTX 1660 VENTUS XS OC |
#3
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Re: Is 32-Bit Float broken ?
Yes, I was on the phone with support yesterday for about 5 hours (!) about this and other issues. Although, to a degree, I felt good intention in them trying to help me, I'm now also pretty sure first level support lacks a lot of knowledge to judge whether it really concerns a bug or not. Only if you can convince them, which takes a lot of effort because they don't know what they're dealing with, only then they will forward it to engineering 'for evaluation'.
But I can confirm that the latest versions of Pro Tools are having various, and serious, problems with 32 bit float files. For example, the AudioSuite 'Normalize' function is also broken on 32 bit float files. Iteratively applying it to a region will keep shrinking the audio level to zero. Make sure to read my other thread: http://duc.avid.com/showthread.php?t=407185. I don't care about any new feature anymore, until they fix the absolute core of the audio program, properly dealing with audio files. After that, they should fix the numerous ADC and LLM bugs, the MIDI timing, and then we can talk again. |
#4
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Re: Is 32-Bit Float broken ?
Sadly, it is. I moved to the PT2018 version. PT11 is also OK.
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#5
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Re: Is 32-Bit Float broken ?
This not good. Even worse if they don't know about it and can't fix it.
Sad.
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PT 2021.10 HDX 16x24 -Mac Pro 12 Cores 48 GB RAM OS 10.13.6 - API 16 channel - AMS Neve 16 channel, AMS-Neve-SSL -Pres/Processing, Bock Audio, BLUE Bottle, Neumann, Josephson -Mics, Bogner, Kemper- Guitar, Chandler Zener-Curve Bender Outboard/Master. UAudio, Waves, Plugin Alliance etc. |
#6
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Re: Is 32-Bit Float broken ?
Hi
I did a test here - using my Zoom F6 to record a 32-Bit float file... https://soundcloud.com/4sound_mandal...-float-zoom-f6 I shouted "avid" as loud as I could in the microphone Pro Tools Ultimate 2019.6 & Win 10 => 32-bit float & 48 kHz session: I imported the file: The waveform look maybe a bit strange - after reducing 36 dB - but the sound is not clipping - the sound is good !!
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Microsoft Windows 11 Home 64-bit OEM DVD Avid OMNI PCIe Pro Tools Ultimate 2023.12 CPU: Intel Core i9-10980XE Motherboard: Gigabyte X299X AORUS MASTER E-ATX RAM: 64 GB Crucial Ballistix Sport LT DDR4 Screen card: MSI GeForce GTX 1660 VENTUS XS OC |
#7
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Re: Is 32-Bit Float broken ?
Quote:
It is caused by the default AudioSuite settings for rendering mode and handle lengths. When you use 'Create continuous file' in combination with 'Entire selection', the audio handle length gets added to the playlist selection and the process looks to adjacent clips for determining normalisation ceiling, and not simply within the parent audio file. Quite confusing, but I get it now. |
#8
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Re: Is 32-Bit Float broken ?
Thanks for good info.
Is my waveform correct after just a reduction of 36 db - or is this a bug ?
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Microsoft Windows 11 Home 64-bit OEM DVD Avid OMNI PCIe Pro Tools Ultimate 2023.12 CPU: Intel Core i9-10980XE Motherboard: Gigabyte X299X AORUS MASTER E-ATX RAM: 64 GB Crucial Ballistix Sport LT DDR4 Screen card: MSI GeForce GTX 1660 VENTUS XS OC |
#9
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Re: Is 32-Bit Float broken ?
Quote:
The problem is PT can only render the waveform in the playlist view up to the 24 bit level. Even if you zoom out the waveform vertically, it will keep this level as a 'ceiling' and not reveal the part of the true waveform above the 24 bit level. |
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