1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Sound Waves Problem

  1. Oct 11, 2006 #1


    User Avatar
    Gold Member

    The problem is this:

    Only two recording channels are needed to create the illusion of sound coming from any point located between two speakers of a stereophonic sound system. If the same signal is recorded in both channels, a listener will hear it coming from a single direction halfway between the two speakers. The brain can sense the direction of sound by noting how much earlier a sound is heard in one ear than in the other.

    Model your ears as two sensors 19.0cm apart in a flat screen. If a click from a distant source is heard 210 microseconds earlier in the left ear than in the right, from what direction does it appear to originate?

    Intuitively, I know that the sound will appear to come from left of the center, but I need to find the exact angle to the left that it originates. I'm not sure where to start in the way of formulas. I figured it might be a trig problem but the way I set it up on paper didn't allow for finding many sides of the triangles. Any help is appreciated.

  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted