what is the only sound in the world that does not make an eco?
358878
I understand its a ducks 'quack' although ive never been in a position to prove this
845169
yes, porque is that the 1, of other than combination tones generated in the ear.\n\nIf you want to try again on your question I'll try again on my answer...
37491
Compared to Krakatoa, the space shuttle would appear to be a point source of sound energy.  The "inverse square law" does not work for a wall of sound or a wall of light or even for a wall of radiation compared to point sources.  Gravity exhibits compliance with the inverse square law only if you consider mass to be concentrated at a point for calculations.  For example the earliest land surveys of northern India contained original significant errors because the attraction of Mt. Everest for the surveyor's plumb bob was neglected.  The loudest observed sound that I have read of was the blast from a Saturn rocket in which the sound was so intense that the condensations were separated by rarefactions that approached a pure vacuum.  You needed distance and ear protection but it was not even heard in upper New York state!
134593
The subtle differences in atmospheric pressure at ground level will not contribute to changes in sound waves. Although this is a viable concept because sound is a wave and the atmospheric pressure will change its progression through that environment, thus changing the sound and if our ear is in the same pressure the interaction upon our ear as well.\n\nI suspect other noises act as a source to drown out the airport noise at certain time and not at others. For example, in a crowded mall ever notice how hard it is to carry on a simple conversation with someone next to you, however in a quiet room you can hear you dog let gas go! Sound waves combat other sound waves, and the strongest will win. Strongest being in most cases the one closest to you.
704754
ok, go to control panel, go to sounds, speech, and audio devices, then sound effects manager, go to sound effect, and click none
46641
borders has a lot of sound tracks, search ebay!!!
65418
In the vast universe of cause and effect, yes, the tree does make a sound. It makes a sound that is heard down to the Earth's core to the vast reaches of space and into the eardrum of a snarkvorce, which is to say a creature capable of transmitting waves into melodies that in turn, turn into frequencies that can only be decifered once someone goes through a black hole and into another dimension.
213560
no, but there is equipment out there that can transform them into sounds that we can hear
1147718
BEEP BEEP!!\n\nThunder, lightning and rain, specifically:\nhttp://www.sounddogs.com/subcategories.asp?Type=1&CategoryID=1045  \n\nOther sound effects sites:\nhttp://www.webplaces.com/html/sounds.htm\n\nhttp://www.sounddogs.com/catsearch.asp?Type=1&gclid=CJzHrISV5YUCFSVoSAodBHulRA\n\nhttp://www.onlysoundeffects.com/Results.aspx?query=Sound%20Effects&sessionid=5oupsl45c1ytkgrw5p5qiiji&cc=us&ns=1
918346
that is an ancient question like Which came first, Chicken or Egg.  Nobody knows that answer for sure.\nI believe it does not make noise, as noise is something that is created inside the head which has ears that interpret the vibrations as sound.  No ears, no sound.\nClarkie's theory on Tree Noise.
129024
ohm, or om is correct. om is supposedly the sound vibration when the universe was created
437055
There is an echo, it's just that the echo sounds almost exactly like their quack that it fools people.\n\nI'll put up a link to Mythbusters ... Meh, aren't any decent ones.  Look at Snopes instead.
235044
This is a tried and true question of Philosophy.  The way one answers shows how human-centered your viewpoint of the natural world is.\nSound is a phenomenon with definite physical, scientifically testable characteristics, e.g. displacement of air molecules; nevertheless, if a HUMAN is not around to hear the sound, does it count? If there is no eardrum to be impacted by the airwaves, is it even a sound? Well, I would have to say that the first person here today has it right-- this is Yahoo Answers. Anything is possible. Except sound.
224941
0ft/s. Sound doesn't propagate in vacuum
767444
Yes. Everything that is NON rap.\n\nNext?
163788
Does not sound like it.
131662
no it just sounds fast