I'm making a conlang and I want it to differentiate voiced, breathy voiced, unvoiced, and unvoiced aspirated plosives, but I'm having trouble telling apart the pronunciation of voiced/unvoiced when it comes after a stop without audible release.
Ex:
[mat̚ da] vs. [mat̚ ta] or [mat̚ dʱa] vs. [mat̚ tʰa]