In every place I've checked, I've found that in syllable onset /b, d, ɡ/ contrast with /p, t, k/ in the aspiration of the latter, being both sets voiceless.
What surprises me is the use of [b̥, d̥, ɡ̊] for the sound transcription of the /b, d, g/ set instead of simply [p, t, k]. Is this for any...