It's possible that background noise was recorded on ancient pottery while spinning, is there any real research
81557
I believe I saw a tv program about exactly that, not that long ago.  I do not recall what the program was, but it would have been on PBS.\n\nIf I remember correctly, they DID aswer that question. They said yes.\n\nYes its possible, Yes noise WAS recorded in that manner, and Yes they are activly researching it.
56242
Amazingly, it seems that it does.\nCheck http://www.liebertonline.com/doi/abs/10.1089/107555304322849039\nhttp://sps.nus.edu.sg/~tanshenm/2172.pdf\nApparently it's about the volume and not related to a type of music.
338364
Wagon wheel effect read about it at http://en.wikipedia.org/wiki/Reverse_rotation_effect
753087
sounds like the mezzotint
229100
here's a site since i don't fully understand the question: http://ancienthistory.about.com/library/bl/bl_pennellhistoryofrome.htm#preface\nhope the answer is there :)
509166
The answer is probably a yes, but the exact situation will change the answer.\n\nIf you are talking about background noise between the voice phrases you want to hear (Called the Noise Floor), this can be fixed fairly easily if the noise floor isnt too high. What you would do is use a device called an Expander/Gate. A Gate basically mutes (True muting or reducing volume by -60db or more) the audio when the volume goes below a certain level (Basically when you're not talking). If the noise isnt too loud, it will usually be masked by the person talking.\n\nAn Expander is like a more subtle version of a gate. Rather than killing the audio completely, it increases the difference of volume (expands) between loud and soft parts of the audio.\n\nMost video recorders reduce the dynamic range of audio using a proccess called compression. This has the effect of making soft parts of the audio intelligable, while making the loud parts not be over bearing. The problem however, is that this proccess increases the noise floor. I would hazard to guess that this is a major part of the problem you are experiencing if the audio you are using is running through the video recorder.\n\nIf this is the case, a gate will have a hard time functioning because the difference between the loud and soft parts of the audio will be hard for the device to detect (as the difference has been reduced). To compensate, stick an expander before the gate. This will add some dynamic range back to the audio, making it easier for a gate to work. This entirely depends on how much the dynamic range has been compressed... the more it has, the less effective these devices will work.\n\nThe operation of expanders/gates can be tricky. Threshold, attack, release, sidechain/key inputs, and ratio control operation are not immediatly obvious to someone who hasnt used an audio device with these functions on it. However, there happens to be tons of info on the net about these devices.\n\nRegarding using equalizers... they are mostly useful for background hums rather than broadband noise. If the noise sounds like noise (Like a "shhhhh", people talking in the background, wind, etc), EQs will not be very effective. If the sound is more like a buzz or humm or whine (Like an electric motor), then EQ will do very well. Look for a "parateric" EQ when doing this. There are tons of software that has this. Parametric EQs will allow you to not only center on the exact frequency, but the bandwith of the EQ can be set to be very narrow. The more narrow the bandwidth is, the less you effect your original sound. Also, you can kill pretty much all frequencies below 60-80hz (depending on the voice) without have a noticeable impact on the the voice. This will reduce some of the low end rumble in the audio.\n\nIf neither of these options work to satisfaction, one last option is a sampling noise reduction system. Not many programs have this... a free one would be GoldWave (Not very high quality, but still works in moderation). What it does is it takes a sample of the noise floor, notes the frequency response of the noise (called a stamp or print), and then reduces these frequencies from the audio. Used to the extreme, it will produce VERY weird artifacts... used well, this kind of noise reduction is currently the most effective in the world. If you can find software that does this dynamically (doesnt take just one "stamp"), the results can seem like magic.\n\nAll of these options can be attained through hardware, stand alone hardware, or via plugins.\n\nHope that helps.
824148
If you stipulate that a vibration of the air equals sound the the answer is yes.\nIf you define a vibration of the ear drum then the answer is no.\n\nTh
2128
Its called a sound block.
894292
http://www.historyoftheuniverse.com/images/cd200w.gif
803641
http://images.google.com\n\nSearch for whatever types of motion you are interested in.
77911
http://en.wikipedia.org/wiki/3D_audio_effect that should help you in telling all about it.
997346
See this all depends.... if this were in the philosophy section, then it could be debatable.  But alas- it's in the botany section, so yes- it does make a sound.  Friction is created as it falls through the air and hits the ground, and that friction causes soundwaves.  Whether someone is there or not is irrelevant.  Humans can only pick up on a certain range of decibels anyways.  That doesn't mean just because we can't hear it, it doens't make a sound.  It just means that we can't hear it.  People need to get unstuck from themselves and think outside the human box.  "If humans can't.... must not be possible."  Meh.
28635
i willtry to take a stab at this but don't hate me if i get it wrong. but the earliest know music to be composed was in the mediteranian. Around 27b.c. in greece i believe. they were able to compose musi in modes(like keys) There was the doric mode, phyrgian mode and another one i cannot remember right now. But this is western music. i bet there were earlier civilization that had different methods of making music.
571993
a xylophone works with the vibrations of the metal pieces when they are struck. Different sizes of peices give different sounds
647307
Try the sonometer or the resonance experiment
145578
http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Paliuris+spina-christi
12323
Of course, Lie Detectors can record if a person is saying "Yes" when they know the correct answer is "No" based on changes in  breathing rate and skin conductivity.  It is "no sweat" to tell the honest truth <G>.  Also functional MRI's can peer into a human brain and estimate what brain function is operating above steady state, by detecting increases in blood flow to a known brain area.  If that can be equated to "yes" or "no" for a given individual, it may replace lie detectors.