if you stand at one side os a stage with hard parallel side walls 17m apart and make a handclap, how often do the flutter echoes arrive?

To determine how often the flutter echoes arrive in this scenario, we need to consider the speed of sound and the distance between the parallel walls.

The speed of sound in air is approximately 343 meters per second. Using this information, we can calculate the time it takes for sound to travel from one wall to the other and back.

Distance between walls = 17 meters
Time = Distance / Speed

Time = 17 meters / 343 meters per second
Time ≈ 0.0496 seconds

So, the total time for the sound wave to travel back and forth between the walls is approximately 0.0496 seconds.

Flutter echoes occur when a sound wave reflects multiple times between parallel surfaces. In this case, there are two reflections: one when the sound wave hits the opposite wall, and another when it returns to the original wall. Each clap creates a flutter echo.

Therefore, the flutter echoes arrive every 0.0496 seconds.