Destructive interfrence in music concerts (basic question)
Destructive interfrence in music concerts (basic question)
(OP)
Hi there. I am sorry I am not a technician, but a physicist and a science writer. I have to review some basic-level educational videos and in one of them the teacher makes a statement that I need to confirm with expert opinions. In very large music concerts, he says, sometimes there is a point in the middle of the public where the sound is accidentally cancelled out due to interference effects. You hear perfectly in a certain place but if you give, say, one step backwards you would hear almost no sound. I have learned that there is some destructive interference near neighbor loudspeakers, but I am afraid the previous statement is an exaggeration. I would like a confirmation of the (non-)existence of this effect in the public area of and its cause. I have tried the Internet and other virtual social networks, unsuccessfully.
If you think I should not be posting this here, please feel free to tell me and I will look for another source and be sorry for the inconvenience. I just had no more options to decide about the question above.
Roberto Belisário
Campinas - SP
Brazil
If you think I should not be posting this here, please feel free to tell me and I will look for another source and be sorry for the inconvenience. I just had no more options to decide about the question above.
Roberto Belisário
Campinas - SP
Brazil





RE: Destructive interfrence in music concerts (basic question)
Different notes would have dead spots in different places.
So yes it is hopelessly exaggerated.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Destructive interfrence in music concerts (basic question)
RE: Destructive interfrence in music concerts (basic question)
That is a lesson you'd never forget. Video the results as you ask people to stand in the dead (or loud) spots for each frequency.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Destructive interfrence in music concerts (basic question)
I can imagine some electronically produced bass-tone to be present at a constant frequency, having a dead spot at the same location (which would be where i was standing, if forced to be present :)