That's because the music is supposed to 'wake you up' should you feel sleepy during the presentation. Also, with the lower volume for the presenter/speaker, it causes the listener to focus their attention on that speaker's voice and what they are saying. If the volume of the speaker and the music were the same you, the listener, would get bored and eventually you mind would wander (The Monotony Effect). But with these 'peaks and valleys' it causes you to be prepared for the next segment.
This is why, when you watch regular television, the show that you are watching, the volume is lower than when they play a commercial. The Advertisers want it that way so you can pay attention to what they are trying to sell you. If you don't believe me, get a decibel meter and put about six feet away from the audio source, your speakers, and watch the level while your favorite program is on. Watch the level jump up when a commercial comes on and watch it drop down when the commercial is over. They do the same effect in movies, too. When there is normal action going on the volume level is normal, comfortable. But when there is action the volume increases, the sound effects and music, and it actually gets your heart pumping. When you look at the credits of a movie, ever wonder who the ADR people are and what they do? http://filmsound.org/terminology/adr.htm Nice article. Now, if you have a video/movie that has low dialogue and really loud music, then something is wrong. Either the PA/Speaker System is not setup to handle the audio mix of the video/movie, like having a 2.0 Sound System and playing a movie with the audio set to output on a 7.1 Sound System, or it could be the other way around, you have the really nice 7.1 Speaker System that will do DTS, but your audio mix is only setup for a 2.0 Sound System. Or, you have someone who doesn't know what they are doing when they did the post production work of the video.("Hmmm... that sounded good on my desktop speaker system.") Anyway, my $.02 cents worth. Daniel On Tue, Jan 13, 2015 at 1:47 PM, Richard McClary <[email protected]> wrote: > WOW! > > Meanwhile, why is it dang near every video has to start out with really > loud "music"? Often (and in this case), the "music" is much louder than > what is needed to hear the speaker. > -- > richard > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Kurt Buff > Sent: Tuesday, January 13, 2015 12:32 PM > To: Kurt Buff > Subject: [NTSysADM] Because life just isn't difficult enough yet... > > Time to lay off the wireless keyboards? > http://samy.pl/keysweeper > > > > > The information contained in this e-mail, and any attachments hereto, is > from The American Society for the Prevention of Cruelty to Animals® > (ASPCA®) and is intended only for use by the addressee(s) named herein and > may contain legally privileged and/or confidential information. If you are > not the intended recipient of this e-mail, you are hereby notified that any > dissemination, distribution, copying or use of the contents of this e-mail, > and any attachments hereto, is strictly prohibited. If you have received > this e-mail in error, please immediately notify me by reply email and > permanently delete the original and any copy of this e-mail and any > printout thereof. -- Daniel Rodriguez [email protected]

