Also can refer to this AVID article

https://avidtech.my.salesforce-sites.com/pkb/articles/en_US/Knowledge/stop-PhraseFind-Bin-Indexing?retURL=%2Fpkb%2Farticles%2Fen_US%2FUser_Guide%2FSibelius-Documentation-All&popup=true

Make sure AVID Media Composer application is closed On the Mac computer go to Macintosh HD\Applications\Avid Media Composer\AvidMediaComposer.app\
(you need to show package contents by right clicking AvidMediaComposer.app)
Then go to >Contents>SharedSupport>AVX2_Plug-ins
Remove "PhoneticIndexNN.avx" from directory below. Remove this file Trash it or move it out of the folder Open AVID Media Composer and Phonetic Indexing will be off

Use this for the 2023 versions of AVID

Log into a MacOS Admin user.
Make sure that Media Composer is closed.
Follow this path:
MacintoshHD\Library\Application Support\Avid\Phonetic
Once there move the .CLS file (or files) to the desktop or to a folder in the desktop (just to back it up in case you would like phonetic indexing to work again)
After doing that click on the "English" folder and create a new folder in there, you can name it whatever you want (Example: NoRead), and move all of the files within the English folder to the folder that you just created there.
This is done so that Media Composer doesn't see those files.
That's it, phonetic indexing is now completely disabled in that machine.

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