Lecture room is a room that fits with the participants. Narrator to reach an understanding by everyone. The narrative voice. And animation with narrative. Reduces the boredom down.
Lecture Hall, there is the size to fit the speaker so that participants have access to insight. Voice narration and animation make the lecture will help reduce tedious.
The lecture room is a perfect fit and the participant access to the keynote speaker, understand all the lectures that use sound and moving images, lectures will help reduce the tedium.