I have a Castlevania Chronicles JPN Disc.
I also have Castlevania Chronicles (PSN PSX USA version).
Lastly, I had the ROM for the original Akumajo Dracula, which I played on ex68 (an emulator for PC).
The voices are missing in the USA version for the dolls. The voices used to say "Who are you?" and "Stop!" I think. The phrases were "Omae wa dareda?" and "Yamete!"
One thing I used to think made the USA version worse (besides the missing voices) was the inability to switch the audio to RolandGS or Original FM Synth.
However, I later learned that you can enable the game to play these tracks instead of the new tracks by holding L+R or something, while selecting Arranged Mode. So that alone nixed that negative, but it took a while for that little factoid to be found out.