Are you asking about how they blow the shofar in our shul?  There is somebody who does it during services and nobody claps or anything while the services are stiil going on till the last one.  Usually after a long one you can hear murmurs from the congregation,  However for the last one of the High Holy Days all members of the congregation who have their own shofars can go up on the bimah and join in for one long blast.  There is always clapping after this.

Laura