Acoustics Answers

A block with a speaker bolted to it is connected to a spring having spring constant k = 20.0 N/m as in Figure 3. The total mass of the block and speaker is 5.00 kg, and the amplitude of this unit’s motion is 0.500 m. If the speaker emits sound waves of frequency 440 Hz, determine the range in frequencies heard by the person to the right of the speaker.

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?