- #1
Physics_0101
- 7
- 0
Say you were strapped to a plane, which flies at twice the speed of sound, and you decide to scream...would you be able to hear yourself and would other people be able to hear you?
Last edited:
I am extremely dubious about this.Galileo said:If you stand on a vast plain with no obstacles (so you hear no echo. Assume the ground doesn't reflect the sound). You won't hear your voice from sound waves in air, since they leave your vocal chords and don't return. You'll still hear yourself for the same reason given above.
Granted. You may hear something, since pressure waves don't spread out as nicely as e.g. light waves and ofcourse some vibrations from your throat will reach your ear. What I`m saying is that, if we ignore that (for the sake of argument), you would still hear yourself. You don't need sound waves for that.DaveC426913 said:I am extremely dubious about this.
If I undestand you correctly, you are suggesting that we only hear our own voices from two sources: through our skull, and from an echo.
Are you suggesting that if I stood in the middle of a gymnasium that is 100 feet to the nearest wall, that I will not hear my voice - except through my skull - until I hear the echo after a 0.2 second delay?
I didn't describe anywhere how you'd hear yourself with earplugs in.I've used high efficiency industrial earplugs, the ones that block virtually all external sound. I can hear my own voice, because it is transmitted through my skull, but I don't hear anything else external, including my own voice. And it sounds NOTHING like what you're suggesting.
Physics_0101 said:Say you were strapped to a plane, which flies at twice the speed of sound, and you decide to scream...would you be able to hear yourself and would other people be able to hear you?
Just because a sound wave is supersonic doesn't mean there is a lot of energy associated with it. Sound is a pressure wave in air (or another object). Air is very light, so making a pressure wave propagate in it requires very little energy (humans are capable of producing a few watts at most).Sir_Deenicus said:Hello, this question bothers me as well as I am not quite sure how talking works. I imagine that the vibration of the larynx provides energy to the air, creating a vibration in the air molecues which is the propogated in a wavelike manner outwards? More or less? Well my question, essentially is, will it not seem to the still observer that a large amount of energy was expended by the talker, relative to them with their measuring that the sound itself is super sonic?
That doesn't really make sense. A sonic boom is a sound wave, just a higher than average energy one.Will the sound itself create a sonic boom?
Forget about people talking. For some reason that's confusing people. Consider this: When the Concorde flies over you, can you hear it? Of course!For a much simpler example to see where I am coming from consider the speed of sound of people talking in a Concorde with respect to a ground observer with awesome equipment.
russ_watters said:Just because a sound wave is supersonic doesn't mean there is a lot of energy associated with it. Sound is a pressure wave in air (or another object). Air is very light, so making a pressure wave propagate in it requires very little energy (humans are capable of producing a few watts at most). That doesn't really make sense. A sonic boom is a sound wave, just a higher than average energy one. Forget about people talking. For some reason that's confusing people. Consider this: When the Concorde flies over you, can you hear it? Of course!