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#1
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32bit SRC bug
When I import a 32bit file and use sampling rate conversion the resulting file is wrong.
When I import it with 4.1667% pull up (50kHz) it results in a file playing much too fast and Mickey Mousey high. The resulting file is precisely 1/4 the length of the original. When importing it with 0.1% pull up the result is actually longer than the original. I have not tested all options so it’s possible there are problems with other SRC settings, too. Can somebody confirm this, please? Reimporting a simple 32bit sine tone with these SRC settings should give the same result. This is on Mojave with 2020.12 Ultimate |
#2
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Re: 32bit SRC bug
Quote:
Quote:
__________________
Help Us Help You ______________________________________ Chris Pro Tools 2024.3 Focusrite LS56 Focusrite Pro40 (3) Slate Digital VRS8 Analogue Tonebuss 24 Channel UAD-2 OCTO Core Accelerator UAD Volt 2 macOS 10.15.7 32 GB DDR4 RAM 4.01GHz Quad-Core Intel Core I7 NVIDIA GeForce GT 740 2 GB |
#3
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Re: 32bit SRC bug
Bit depth not bit rate.
Sent from my iPhone using Tapatalk |
#4
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Re: 32bit SRC bug
__________________
Help Us Help You ______________________________________ Chris Pro Tools 2024.3 Focusrite LS56 Focusrite Pro40 (3) Slate Digital VRS8 Analogue Tonebuss 24 Channel UAD-2 OCTO Core Accelerator UAD Volt 2 macOS 10.15.7 32 GB DDR4 RAM 4.01GHz Quad-Core Intel Core I7 NVIDIA GeForce GT 740 2 GB |
#5
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Re: 32bit SRC bug
No it's not exactly as it should be. Sonopolis is right, if you go to "48KHz (pull up/down)" and select either 50,050 or 50,000 then look at what Pro Tools puts as the source sample rate... It's a bug.
Cheers, Pete |
#6
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Re: 32bit SRC bug
Ok, so you're all assuming the error is in the user, great.
To clear things up, I am very well aware of the difference in sampling rate and bit depth. What I'm saying is that the this sampling rate conversion error only happens with files that have a bit depth of 32. Quote:
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#7
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Re: 32bit SRC bug
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Bildschirmfoto 2021-01-16 um 18.31.05.jpg |
#8
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Re: 32bit SRC bug
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I installed PT 2020.3.0 and all the Pull Up/Down settings show the correct source sample rate when selected so some of the settings in 2020.12.0 are showing up as the wrong sample rate. I'll report the bug and hopefully it gets fixed in the next release. At least you can enter the correct sample rate manually as a workaround.
__________________
Help Us Help You ______________________________________ Chris Pro Tools 2024.3 Focusrite LS56 Focusrite Pro40 (3) Slate Digital VRS8 Analogue Tonebuss 24 Channel UAD-2 OCTO Core Accelerator UAD Volt 2 macOS 10.15.7 32 GB DDR4 RAM 4.01GHz Quad-Core Intel Core I7 NVIDIA GeForce GT 740 2 GB |
#9
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Re: 32bit SRC bug
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Thanks for reporting, I did too. |
#10
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Re: 32bit SRC bug
Yes, the 50,050 that is 0.1% Up NTSC to PAL is messed up, but the 48,048 0.1% Up NTSC to Film is ok.
__________________
Help Us Help You ______________________________________ Chris Pro Tools 2024.3 Focusrite LS56 Focusrite Pro40 (3) Slate Digital VRS8 Analogue Tonebuss 24 Channel UAD-2 OCTO Core Accelerator UAD Volt 2 macOS 10.15.7 32 GB DDR4 RAM 4.01GHz Quad-Core Intel Core I7 NVIDIA GeForce GT 740 2 GB |
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