Reply To: Chidushim on Daf Yomi

ברכות ט,ו

There are four places where we find speech in the performance of a mitzva:
1. krias shma SA O’CH 62,3
2. tefila SA O’CH 101,2
3. leinen for oneself when called up
SA O’CH 141,2
4. repeating the parasha
SA O’CH 285,1

Krias shma should be enonciated preferably such that the one saying it can hear it.
Tefila similar to krias shma and therefore Eli thought that Chana was drunk because the custom was like that but Chana only moved her mouth but was not heard by one being next to her. See Teshuva Meahava 1,13.
According to the GRA the Urim Vetumim lit up כשרה and Eli misread it as שכרה. This needs some explanation as the Tumim is supposed to put the letters together. Maybe he became so distracted and did not have the proper machshovos to make the Tumim function correctly. See Ramban Shmos (28,30).
Leinen it says according to the Mechaber to say it so quietly that you can’t hear it whereas the RMA argues that it should not be worse than tefila. Maybe the Mechaber holds that it might distract the Baal Korei next to him.
Repeating the parasha how to say it is not mentioned but just thinking without saying is usually is not considered speech.