• Posts
  • RSS
  • ◂◂RSS
  • Contact

  • Simple Contra Speaker Placement

    December 7th, 2016
    contra, sound
    Here's an example contra dance hall:

    What's wrong with this picture? It's going to feel way louder near the speaker than farther away:

    closest person:         1ft
    farthest person:       15ft
    effective difference: ~15x
    
    This wouldn't be so bad if people could sort themselves in the hall based on the volume they prefer, but contra doesn't let you do this. To get a more even volume distribution, get the speaker up above the dancer's heads:

    Now the difference is more like 5x. What if we get the speaker even higher?

    This does better because the speaker is now closer to being a consistent distance from people's heads (~3.5x), but it starts to sound pretty muddy. The problem is that a lot of the sound is bouncing off of the ceiling on its way to the dancers, and things sound clearest when you have as little reflection as possible. Additionally, there's a bit of a "hole" right in front of the stage, where dancers will get very little direct sound from the speaker.

    To fix this, we can angle the speakers down a little:

    Now everyone is happy.

    (I've generally used ultimate tall stands with K10 speakers that have a built-in tilter. With speakers that don't have built-in tilters it's possible to use external ones (like these) but they shift the center of gravity of your speaker in a way that might be a problem on a tall stand. Permanent "flown" installation is ideal, but most of us aren't running sound in a situation where that would make sense.)

    Comment via: google plus, facebook

    Recent posts on blogs I like:

    Crying in museums

    Exhibits that made me want a better world The post Crying in museums appeared first on Otherwise.

    via Otherwise January 6, 2023

    My Rainbow Kit

    For Christmas I got a really fun kit about rainbows. It had a rainbow catcher, a really cool necklace, a streamer thingy, and it also had a really really cool pinwheel, and it also had a bracelet and a pinata. Unfortunately the pinata didn't work out …

    via Anna Wise's Blog Posts January 5, 2023

    Phones

    I think that once a kid is in third grade they should be able to get a phone. I think that while sometimes parents might want kids not to have them at certain ages, phones can be quite useful at times. Tablets don't have GPS, they don't have WiFi…

    via Lily Wise's Blog Posts January 5, 2023

    more     (via openring)


  • Posts
  • RSS
  • ◂◂RSS
  • Contact