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Why is there a delay of about 10 milliseconds of vocals in L or R?

  1. Oct 20, 2013 #1
    Why is there a delay of about 10 milliseconds of vocals in one of the stereo outputs?

    I heard, this is supposed to give you a sense of space. But our ears are just less than 1 foot apart, and it takes sound about 1 millisecond to travel 1 feet in air. Since our ears are not 10 feet apart, we never perceive the same sound in one ear more than 1 millisecond later than the other. So, what's the point in putting so long delays?
     
  2. jcsd
  3. Oct 20, 2013 #2

    Borek

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    You mean SciFi vocals, or Fantasy vocals?
     
  4. Oct 20, 2013 #3
    Oh, sorry. I thought this category is for ''SciFi & fantasy movies, TV, books, comics, art, games and culture!'' So I thought I might put question on music as well. Now I get that even the ''TV, books, comics, art, games and culture'' questions have to be based on sci-fi and fantasy stuff.

    Is there a way I can move this thread in a different category?
     
  5. Oct 20, 2013 #4

    Pythagorean

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    I would think 1 foot apart only works if you're wearing headphones. If it's designed for speakers, it's really more of a guess. And they're also assuming you're directly in the middle of the speakers, probably.
     
  6. Oct 20, 2013 #5

    Borek

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    Honestly, no idea what category it is going to fit. Mostly because I have no idea what the question is about. I mean - I have never heard about the delay being added. But if it is, it just moves perceived source of the sound.
     
  7. Oct 20, 2013 #6

    Pythagorean

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    It's a technique to make sound more real by simulating it as it would be in 3D. There's a demo that uses the algorithm with a clip of someone cutting your hair and it sounds/feels like the scissors are actually moving around your head.
     
  8. Oct 20, 2013 #7

    Pythagorean

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    Without using headphones though, I don't think it works near as well, you can't guess the position of everyone in the room or their distance from the speaker, making the geometry rather undefined. The haircut one I listened to with headphones was unsettling. I was scared my ear was going to get snipped.
     
  9. Oct 20, 2013 #8

    jtbell

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    I've moved this to the general "Computing & Technology" forum, because we sometimes have questions about audio/video systems and technology there.
     
  10. Oct 20, 2013 #9

    AlephZero

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  11. Oct 20, 2013 #10
    Thank you very much. Yes, I didn't think about speakers actually. But the same sound reaching one ear, even when you're listening to music with speakers, at a delay of about 10-30 ms never happens in reality.

    Somebody told me that it's intended to make the sounds sound ''thicker'' or ''wider'' or whatever. And another said, it helps the ''imperfect'' sounds sound less so.

    Thank you very much for the correction.

    Thank you very much. That link was very helpful.
     
    Last edited by a moderator: Dec 18, 2013
  12. Oct 20, 2013 #11

    meBigGuy

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  13. Oct 21, 2013 #12
    Thank you very much. Those links were very helpful.
     
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