I was wondering if someone could help me clear up some confusion
Sometimes when I hear people speaking Japanese in videos, I hear them swap the k/g consonants, as well as the d/t consonants.. Like よろしく sounds like exactly what it looks like alone, but adding おねがいします makes the く sound like ご.. I get that the u turns silent but I don't get the consonant switching.
The same goes for なかった where it sounds more like ながっだ in the audio provided here https://elon.io/learn-japanese-hepburn/lexicon/26888/anata-wa-heta-ja-nakatta-desu.
Is this something to do with phonetics and is there a specific spot where the tongue touches when Japanese people pronounce these two to make them sound very similar? I know t/d make use of the back of the top of your teeth.