In ancient times the shofar was sounded to announce a new month. The horn of a ram is most often used for making a shofar because it is much like the story of the sacrifice of Isaac by Abraham, an event which, according to tradition, is believe to have happened on Rosh Hashanah.
There are three types of shofar blasts that we hear during Rosh Hashanah.
Before the shofar is blown a special blessing is said:
Baruch ata Adonai, Eloheynu melech ha-olam, asher kid-shanu bemizvotav vetzivanu lishmo’ah kol shofar.
I praise G-d, who is King and Ruler over all, who commanded us to hear the sound of the shofar.
Please note that this page contains the name of G-d. If you print it out, please treat it with appropriate respect.