I was not aware of any speech recognition tools that I have used that did not use machine learning. It’s been around for quite some time (>20 years). The Wikipedia page lists some systems from before the 1980s that didn’t use machine learning though I’m unsure whether those were ever used.
How else? You can’t exactly write code to recognize speech reliably.
How do you think it worked before machine learning?
Also, if getting the entire wrong set of words isn’t a bad result, your brain is mush.
I was not aware of any speech recognition tools that I have used that did not use machine learning. It’s been around for quite some time (>20 years). The Wikipedia page lists some systems from before the 1980s that didn’t use machine learning though I’m unsure whether those were ever used.