Arranging the patio speakers
|I have set up my two stereo speakers on my back patio as shown in the top view diagram in the figure at the right. I am worried that at certain positions
I will lose frequencies as a result of interference. The coordinate grid on the edge of the picture has its large tick marks separated by 1 meter. For ease of calculation, make the following assumptions:
- Assume that the relevant objects lie on integer or half-integer
grid points of the coordinate system.
- Take the speed of sound to be 343 m/s.
- Ignore the reflection of sound from the house, trees ,etc
- The speakers are in phase.
- What will happen if I am sitting in the middle of the bench?
- If I am sitting in the lawn chair on the left, what will be the lowest frequency I will lose to destructive interference?
- Can I restore the frequency lost in part (a) by switching the leads to one of the speakers, thereby reversing the phase of that source?
- With the leads reversed, what will happen to the sound for a person sitting at the center of the bench?
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Page last modified
October 31, 2002: O34