Hi, Two speakers, A and B, are located at x = +0.5 m and x = -0.5 m. A 680 Hz signal is sent to both speakers. You then walk around the origin, x = 0, in a circle of radius 5.0 m. v_sound = 340 m/s If you walk once around the complete circle, how many intensity maxima do you hear? This is what I did: m*wavelength = path difference Since the maximum path difference is 1.0 m and the wavelength is 0.5 metres, m can only be 0 or 1 or 2. This corresponds to 6 points on the circle (2 points per value of m). Is this the correct way of doing this question? The correct answer is 8, not 6, and I don't know where the extra 2 points come from! Please help me. Thank you very much!