Noise, cracks and peaks with 44.1KHz "rectangels"

Home Page Forums Cymatic Audio Forum uTrack-X32 Noise, cracks and peaks with 44.1KHz "rectangels"

This topic contains 27 replies, has 8 voices, and was last updated by Laszlo . Laszlo 1 week, 2 days ago.

Viewing 15 posts - 1 through 15 (of 28 total)
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  • #35007
    Miralem
    Miralem
    Participant

    As there are some topics about the noise and crackles, i will start a new thread, as my problem doesnt belong to the 44/48KHz.
    I recorded a few months without a problem until lat Sunday.
    Until Sunday i recorded standart bands, like drums, bass guitars and vox.
    Everything was fine and there was no Audio artefacts.

    On last sunday i had an orchester with 15 people and the wav files are all noisy/distorting. When i look at the zoomed audio files, i can see a lot of rectangels in the waveform, that doesnt belong to the waveform.
    There are also extremly high rectangle peaks on all tracks. Even on that tracks, that are not connected.

    I am recording on an Sandisk extreme Flash drive, which was working without issues all the months before.

    Ok, when i look at the difference between my concerts:
    The only difference between my bands and the orchestra is, that the orchestra used a lot of AER Amps with XLR Di Out. That means, that i had minimum 5 or 6 XLR Cables, coming from devices with connected ground. I know, the Utrack is only writing to the drive, and the X32 is converting analog > digital. But sometimes there is no logical explanation on troobleshooting in digital devices…

    Here you can see the artefacts in the waveforms. I think this is the same “Noise”, that most user “hear” in there recordings…

    Recorded with 44.1KHz

    https://www.dropbox.com/s/8bcqomhh953ig4d/Cracks%20and%20noise.pdf?dl=0

    #35008
    Miralem
    Miralem
    Participant

    I forgot one imported thing.
    On my X32 Rack the 16 Mic Inputs are routed to local 1-16.
    The 6 Aux Inputs are routed to 17-22.

    – There is “NO” noise and “NO” peaks on the Aux Inputs.
    – Channel 25-32 are routed to non existing local 25-32.
    There is absolutly NO noise on the tracks 25-32 (even no noise on full zomm in).

    #35009
    Miralem
    Miralem
    Participant

    And also one important thing:

    The log file tells me, that everything was ok. No issue with the drive.

    #40957
    steve krafft
    steve krafft
    Participant

    Any further updates on this? I had virtually the exact same problem last week. Major bummer to have our live recordings fail.

    We have a dual X32 Rack setup to provide 8 stereo IEM feeds. Rack 1 has the Cymatic uTrack32, with 6 Aux inputs, 16 local mic inputs, and 16 remote mic inputs over AES50 from Rack 2. In our rehearsals, the recording was fine. At our next 2 gigs, 16 remote mic inputs (16 drums) recorded fine but we got severe crackling noise on 8 of the local mic input 1-8 (vocals SM58’s, guitar amp mics SM57’s). Interestingly, local inputs 9-16 did not fail (more drum mics, bass DI); these I routed to the uTrack32 card over Ultranet P16out[9:16]. It seems like re-routing the raw sampled inputs over P16 or AES makes it work reliably, where as the raw feeds alone can have the problem. Since the problematic local 1-8 go to the other Rack 2, I may try feeding the uTrack32 with the re-routed signals from Rack 2, over AES, assuming the issue is only with direct local mic pre inputs.

    We used a Samsung T5 SSD 512GB drive.

    This recording card is unusable for us unless we figure out the problem.

    Similar issue reported on X32 forum, though this does not support the theory that direct local mic inputs are the problem, but possibly just some blocks of 8 have the issue.
    https://forum.musictribe.com/showthread.php?19499-Crackle-on-channel-17-24-on-recordings

    #41282
    Laszlo .
    Laszlo
    Keymaster

    Hello Steve,

    Could you please tell us the production date of your mixing console? “date code”

    #41339
    steve krafft
    steve krafft
    Participant

    Where is the date code and serial number located on the X32 Rack? I don’t see it on the front or rear panel, so I may need to remove the unit from the mounting rack to get the date code.
    I ordered my X32 Rack from Sweetwater in May of this year.
    Is there a reason the date code might be important, or would suggest a workaround?
    thanks,
    Steve

    #41355
    Laszlo .
    Laszlo
    Keymaster

    Hi Steve,

    Thank you for your feedback.
    I have ask this question because some of the users who has a newer revision of the mixer experienced similar issue we are working on the solution. I’ll send you an email with a testing firmware version please try it out your card with this firmware release.

    #41462
    Frank Lundgren
    Frank Lundgren
    Participant

    I have the same problem with a 2 month old x32.

    #41471
    Laszlo .
    Laszlo
    Keymaster

    Hi Frank,

    I’ll send you an email with a testing firmware version please try it out your card with this firmware release.

    #41556
    Ronald de Ruijter
    Ronald de Ruijter
    Participant

    Last weekend I recorded a liveband on 44.1kHz with a Midas M32R. Same issue as above… Seems like a clock sync conflict.

    #41575
    Frank Lundgren
    Frank Lundgren
    Participant

    It sems to work, recorded an hour at 48khz with no problems.

    #42034
    Frank K.
    Frank K.
    Participant

    Hi Lazlo, could you mail me the firmware too? Greetings!

    #42054
    Laszlo .
    Laszlo
    Keymaster

    I have sent you an email with instructions

    #42066
    Frank K.
    Frank K.
    Participant

    Hi Laszlo, thanks a lot! It seems that my problems are solved – newer X32 producer had a lot of crackling etc., now a short test without any problems.

    #42070
    Laszlo .
    Laszlo
    Keymaster

    Thank you for your feedback Frank!

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