Why is bounce in place not sample accurate?
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- KVRer
- Topic Starter
- 4 posts since 28 Feb, 2018
I have an issue with Bounce in Place and I can't seem to find out why.
When I use Bounce in Place on an audio clip, or on audio in an audio track, the bounced sample always seems to have a few samples of latency. It only happens with clips or tracks that contain audio, not with notes. When I place a sample in a Sampler instance and trigger the sample with a note and bounce that down, then the bounced audio is sample accurate.
I've attached a screenshot of what I mean. The top waveform is the original. It's a cut of a longer sample that I've placed in a clip. The bottom waveform is the sample that was bounced using Bounce in Place. As can been seen the bounced-down sample has a slight latency and, strangely, also part of the original longer sample is visible that I cut off before I put it in the clip. For this example I used an empty new project without any plugins loaded.
I've tried a lot of different things to remedy this but nothing seems to make a difference. I've tried different audio interfaces, different sample rates, buffer sizes, PDC enabled/disabled etc. It always happens. I'm using Bitwig 4.4.10 and a Focusrite 18i20 audio interface. I'm on Windows 10.
I don't understand why this happens. Does this happen to anyone else?
When I use Bounce in Place on an audio clip, or on audio in an audio track, the bounced sample always seems to have a few samples of latency. It only happens with clips or tracks that contain audio, not with notes. When I place a sample in a Sampler instance and trigger the sample with a note and bounce that down, then the bounced audio is sample accurate.
I've attached a screenshot of what I mean. The top waveform is the original. It's a cut of a longer sample that I've placed in a clip. The bottom waveform is the sample that was bounced using Bounce in Place. As can been seen the bounced-down sample has a slight latency and, strangely, also part of the original longer sample is visible that I cut off before I put it in the clip. For this example I used an empty new project without any plugins loaded.
I've tried a lot of different things to remedy this but nothing seems to make a difference. I've tried different audio interfaces, different sample rates, buffer sizes, PDC enabled/disabled etc. It always happens. I'm using Bitwig 4.4.10 and a Focusrite 18i20 audio interface. I'm on Windows 10.
I don't understand why this happens. Does this happen to anyone else?
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Last edited by Q-man on Thu Oct 12, 2023 8:55 pm, edited 3 times in total.
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- KVRist
- 117 posts since 26 May, 2021
What stretch mode are you using? Does it still happen if you use raw? My guess is this would be expected for any of the spectral modes, probably the granular modes would be better aligned?
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- KVRAF
- 1535 posts since 13 Dec, 2016
I wonder why Bitwig created this forum place when they are never present.
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- KVRer
- Topic Starter
- 4 posts since 28 Feb, 2018
I've now also tested it on a Mac Book Pro with a fresh install of Bitwig and it's exhibiting the same behaviour. I also tried the beta of Bitwig 5, the issue is present there as well.
I've attached another screenshot from my mac. It's a new project and I dragged a sample into a clip. I cut off the first transient, consolidated the clip and made sure the stretching mode is set to Raw. Then I duplicated the clip and bounced it in place. The result is a clip that is slightly out of sync and starts with a part of the transient that I had cut off from the original. It only seems to happen with edited clips. Bouncing an untouched clip seems to work OK.
Can somebody confirm this behaviour?
I've attached another screenshot from my mac. It's a new project and I dragged a sample into a clip. I cut off the first transient, consolidated the clip and made sure the stretching mode is set to Raw. Then I duplicated the clip and bounced it in place. The result is a clip that is slightly out of sync and starts with a part of the transient that I had cut off from the original. It only seems to happen with edited clips. Bouncing an untouched clip seems to work OK.
Can somebody confirm this behaviour?
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- KVRAF
- 25630 posts since 3 Feb, 2005 from in the wilds
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- KVRist
- 259 posts since 20 Jan, 2005
Same issue here on Win11 / BW 4.2.
It’s very subtle though, waveform is half a pixel derailed from its original
Did any of you reported it to the support mail yet? Their replies are concise but treated diligently sooner or later (specially if you could repro it several times).
It’s very subtle though, waveform is half a pixel derailed from its original
Did any of you reported it to the support mail yet? Their replies are concise but treated diligently sooner or later (specially if you could repro it several times).
Last edited by Zacchino on Wed May 17, 2023 3:26 am, edited 2 times in total.
- KVRAF
- 25630 posts since 3 Feb, 2005 from in the wilds
In this case, it is not a suggestion... it's a bug report. I didn't send it in myself.
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- KVRist
- 64 posts since 1 Apr, 2014
Alckemy is frustrated about this (1:11:15):
https://www.youtube.com/live/5LnvnPimY_0
I like that v5 got some delay compensation fixes, but I hope one day, all these unintended delays are fixed, as these are super annoying time wasters, being less obvious to recognize early on.
https://www.youtube.com/live/5LnvnPimY_0
I like that v5 got some delay compensation fixes, but I hope one day, all these unintended delays are fixed, as these are super annoying time wasters, being less obvious to recognize early on.
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- KVRist
- 124 posts since 4 Jan, 2021
Does this happen when you export stems?
- KVRian
- 1300 posts since 7 Dec, 2017
Weird. In the OP it's adding, in Alckemy's vid is chopping off transients, on my system it's literally adding a few negligible amount of samples, but only sometimes, still it's annoying.
-JH
- KVRAF
- 25630 posts since 3 Feb, 2005 from in the wilds
Please put in a bug report.JHernandez wrote: ↑Sun Jul 02, 2023 10:29 pm Weird. In the OP it's adding, in Alckemy's vid is chopping off transients, on my system it's literally adding a few negligible amount of samples, but only sometimes, still it's annoying.