The claim of the article is that it would be technically infeasible - and they go into how difficult it is to interpret context. However simple keyword matching would be more than enough.
Facebook has a lot of compute resources, but they wouldn't have to use it. Your smartphone is more than fast enough to do simple speech recognition. The accuracy rate wouldn't have to be that high - you won't get mad if you see an ad for a misheard keyword.
Facebook has a lot of compute resources, but they wouldn't have to use it. Your smartphone is more than fast enough to do simple speech recognition. The accuracy rate wouldn't have to be that high - you won't get mad if you see an ad for a misheard keyword.