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ehd27241446qg78
ehd27241446qg78
Participant
November 21, 2022
Question

fMRI noise removal for a clearer speech

  • November 21, 2022
  • 1 reply
  • 274 views

I'd like to ask if there's any solution to removing great fMRI noise, just to hear a clearer bisyllabic words.

I am new to Adobe Audition, and I have tried methods like Paintbrush selection and Learn Sound Model, but to no avail...

See if there's any Audio Masters who can solve this issue!

I'm attaching my audio sound file below. 

Thanks in advance!

This topic has been closed for replies.

1 reply

SteveG_AudioMasters_
Community Expert
SteveG_AudioMasters_Community Expert
Community Expert
November 21, 2022

I'm sorry, but there's absolutely no chance of being able to do anything with that at all. It's a pretty effective jamming signal.

    ehd27241446qg78
    ehd27241446qg78Author
    Participant
    November 23, 2022

    Steve, thanks for the very rapid reply. That really means a lot to me.
    I was planning to capture the cycle-to-cyle regular noise and teach it to Adobe Audition, then subtract it from the audio. Apparently I don't have the skill to do that as a novice in this software.

    If a communit expert like you can't even solve it, I can simply give up....

    Do you know any other ways that can subtract these noise and show the speech in a little bit clearer manner? 

    SteveG_AudioMasters_
    Community Expert
    SteveG_AudioMasters_Community Expert
    Community Expert
    November 23, 2022

    Even if it was cyclic (it isn't really - I checked) you still couldn't use a subtractive method because the noise is effectively full bandwidth. What you'd be removing is the noise plus anything else in the same band space - in other words, speech. And from what I can sort-of hear, it's worse than that; the alarming (but expected) level of electromagnetic interference appears to amplitude modulate whatever is behind it, so even if you could get rid of the interference, you woudn't be able to make any sense of what was left at all.

     

    I used to run a studio that was about 100 yards away from an MRI scanner, and whenever it was running, recording voiceovers was pretty much impossible - even at that distance - for pretty much the same reason. Being medical equipment, they appear, legitimately, to be able to produce as much interference as they want without let or hindrance.

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