Observer 8.0 m -6.0 m-

Two audio speakers are placed on a vertical rail. Speaker A is placed at head-level while Speaker B is place at some variable height, Ay, above Speaker A. Both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.759 meters. Calculate the lowest height that Speaker B can be placed above Speaker A to produce a minimum of sound heard by person standing Ax = 4.50 meters directly in front of Speaker A. sy AX Image size: S M L Max

Two loudspeakers in a plane are 2.0 m apart and in phase with each other. Both emit 700 Hz sound waves into a room where the speed of sound is 341 m/s. A listener stands 5.0 m in front of the loudspeakers and 2.0 m to one side of the center. a)ls the interference at this point maximum constructive, maximum destructive, or in between? b)How will the situation differ if the loudspeakers are out of phase? Step 1: SKETCH the situation. Step 2: Draw the distance r₁ from source 1 to the point and the distance r₂ from source 2 to the point Step 3: Find 1 and 2, then calculate Ar. Step 4: Find the wavelength Step 5:Find the phase difference at that point.

Two speakers are against a wall emitting a sound at 767 Hz, 14 m apart, and facing each other. You are standing against the wall in between the speakers. Use 344ms for the speed of sound in air. A) What is the closest distance that you can be from the speaker on the left at which you exprerience total destructive interference, and the sound from the speakers cancel out?  B) What is the closest distance that you can be from the speaker on the left at which you experrience total constructive interference, and the sound intensity is doubled?