Acoustics Answers

Two speakers are driven by the same oscillator of frequency 200 Hz. They are located on a vertical pole a distance of 4.00 m from each other. A man walks toward one of the speakers in a direction perpendicular to the pole as shown in Figure 1.

a) How many times will he hear a minimum in sound intensity, and
b) How far is he from the wall at these moments ?

Take the speed of sound to be 330 m/s and ignore any sound reflections coming off the floor.

4596,7655,5864,2274,1696,0216,7005,1053,0483,01361,8748 what formula used between these number series and what is the next number?

Are there any emittors creating a field in a three-dimensional space, with the exception of two-dimensional surfaces, on which the field is zero?

Why is the sound louder and "rolling" in an empty hall rather than in the hall, filled with the audience?