wav file recovery from interrupted Qu-Drive multitrack recording

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This topic contains 2 replies, has 3 voices, and was last updated by Profile photo of Giga Giga 1 year, 2 months ago.

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  • #69211
    Profile photo of tylermatthew
    tylermatthew
    Participant

    Hi All,

    Just thought I’d share this data-point here since I wasn’t able to find this information, and essentially had to trial-and-error my way to a solution.

    Last night I was using the Qu-Drive feature on a Qu-32 to record 18 tracks of multitrack to a sandisk external SSD. A power interruption killed the board before I was able to stop the recording, corrupting the files. I was sure I had lost the data (which in this case was for a purely volunteer gig with the recording as a bonus, not a primary goal. So not the end of the world). Someone mentioned to me that VLC might be able to read a file even if it were corrupted, so I should try and recover it that way. Well, that didn’t work, but once I started reading, searching, and trying different things, my hope to recover these increased, and eventually I was able to do so using Audacity’s Raw Data import tool.

    First, I used the ‘chkdsk’ command in windows (through cmd.exe) to let windows find any data that wasn’t properly stored/formatted/etc. Because the disk for me was the D: drive, I used [chkdsk D: /f] without the brackets, which made my previously 512 Byte large corrupted files now a seemingly correct size. (around 800MB each) I used Audacity to try and open them, but it was still unable to, and VLC gave me audio, but it was clearly random digital distortion. I eventually found that using the following settings resulted in my original audio, and I was able to then use Audacity to export them as Wav files again, ready to be dropped into Protools!

    Encoding: Signed 24-bit PCM
    Byte Order: little-endian
    Channels: 1-channel(mono)
    start offset: 512 Bytes
    Amount to import: 100%
    Sample Rate: 48000 Hz

    Hopefully this will be useful to someone somewhere so they don’t have to hunt and peck those settings!

    #93152
    Profile photo of Oldwave
    Oldwave
    Participant

    brilliant thank you

    #93161
    Profile photo of Giga
    Giga
    Participant

    Ha ! I hope I”ll never need this but thank you very much for the tip !

    Btw: on several occasions I forgot to properly stop recordings before powering down and never until now had the issue the files were broken. Probably just lucky I guess…

    Again, thanks !

    Giga

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