In English, most unvoiced consonants whose voiced counterparts are in-repertoire non-allophones are aspirated and their voiced counterparts non-aspirated, which seems to make most of the difference in some brief experiments with whispering. Fricatives are the hardest and seem to rely on subtle articulatory differences instead, but this isn’t a blinded test, so…
Fun fact: When whispering, everything is unvoiced and you have to figure out from context which sounds are meant to be voiced.
In English, most unvoiced consonants whose voiced counterparts are in-repertoire non-allophones are aspirated and their voiced counterparts non-aspirated, which seems to make most of the difference in some brief experiments with whispering. Fricatives are the hardest and seem to rely on subtle articulatory differences instead, but this isn’t a blinded test, so…