Which parts in Shacharis should be said aloud, and which parts should be recited silently to yourself? Obviously the Amidah should be silent, but what about Hodu, Boruch Sheamar, etc.?
Three items that I know are said aloud (I think they are mentioned in Talmud Brachot. I'll edit in location when I find it):
- יהא שמה רבא.. of the Kaddish
- ברכו את ה המבורך ... in response to the Chazan or Torah Oleh's ברכו
- אמן response to each blessing of the chazan's amidah repetition