Daf 34 discusses the questions of when the shofar is actually blown on Rosh Hashanah, why the blessing over the shofar is said earlier in the service, what kinds of sounds are made by the shofar, how those sounds are interpreted in the 4th century, and how Rosh Hashanah might have been observed a thousand years earlier. A continuing general theme is how the understanding and observance of Rosh Hashanah changed over the ages.