Why does your voice change when you suck up Helium?
147009
Helium alters your vocal cords (temporarily, as I'm sure you discovered), causing the pitch of your voice to arrive.\n\nWhile it can be a lot of fun, repeated exposure to your larnyx isn't good for it.
708907
Your voice sounds funny to you in a recording because you're usually listening to it from inside your own head.  What you hear on a recording is how other people hear you, so if you don't like it, go get a voice coach or something.
1102413
b.c ur whisper turns into loudness
148387
nitrous gas is called laughing gas but not because it makes you laugh... >surprise<\n\nit has a stinging odor and its vapors when inhaled make you cough up... this probably is the "laughing"... it can also irritate your eye...\n\nwhen you cough, i don't think you can talk at all... but i think, if ever you can, it still depends on the quality of voice you have... \n\n\n:-) chemical engineering student...
18640
Maybe when you are stressed out, you tend to yell quite a bit, and resolves in to losing your voice. You should definatly see your doctor, and talk to him about what happens......
532156
ur ques is incomplete. in a microphone it gets converted to electrical energy
10432
The balloon is filled with hot air by the burner.  The hot air inside the balloon rises because it is lighter than cold (or cooler air).  assuming you mean't a hot air balloon.\n\nNobody is sure about helium ballons because we always suck the helium out so we can talk weird.
751346
you don't hear your "real" voice because when you speak/sing, the bones in your ear vibrate and give you a distorted sound. When others hear you, they only get the sound waves and hear what you really sound like. Singers don't hear their real voice, they only hear the notes they sing.. I would suggest going to a voice instructor
891931
initially only 10-29% of air is filled because the air inside is heated it naturally expands and occupies the rest of the volume when it expands the density of helium decreases and hence the baloons goes up because the density of air inside is leser then the air outside
68390
Myoelastic-aerodynamic Theory\nEarly voice researchers in the 1950's and 1960's explained vocal fold oscillation with the myoelastic-aerodynamic theory. According to these theories, Bernoulli forces (negative pressure) cause the vocal folds to be sucked together, creating a closed airspace below the glottis. Continued air pressure from the lungs builds up underneath the closed folds. Once this pressure becomes high enough, the folds are blown outward, thus opening the glottis and releasing a single 'puff' of air. \n\nThe lateral movement of the vocal folds continues until the natural elasticity of the tissue takes over, and the vocal folds move back to their original, closed position. Then, the cycle begins again. Each cycle produces a single small puff of air; the sound of the human voice is nothing more than tens or hundreds of these small puffs of air being released every second and filtered by the vocal tract. \n\nLet's further examine the myoelastic-aerodynamic theory. Myo- means muscle; the vocal folds, after all, are mostly comprised of muscle tissue. The -elastic suffix serves to remind us that the vocal fold is elastic and that we have active control over its elastic properties. Aerodynamic means that the theory deals with the motion of air and other gaseous fluids, and with the forces active on bodies in motion (such as the vocal folds) in relation to such fluids.
156918
Helium is an inert gas that is lighter than air and can be inhaled briefly without risk of death. Sound is produced by vibration, the movement of air around our vocal chords. Because helium gas is lighter than the usual oxygen/nitrogen blend, it changes the resonant frequency of the human vocal tract, causing a faster vibration and a higher-pitched, cartoon-character sound.
253007
Maybe you have laryngitis. If you have laryngitis, your voice will not work.  Give it a few days and it should get better.
24312
Depends on temp and pressure, but at room temp, avg. pressure, helium's a gas
937535
The helium is compressed when it is in the tank.  When it exits the tank, it expands in the balloons until it equalizes with atmospheric pressure.  Any gas can be compressed, as to occupy a smaller volume.  You can see this if you would take a plastic container fill it with air, and submerge it to the bottom of a swimming pool.  you would able to see that the container would deform because of the volume change of the container.
781654
You probably have nodules on you vocal cords...singers  call them NODES.  The only way to get rid of them is with surgery.  Nodules develop on the vocal cords from over use or abuse of the voice.
250864
Several viral infections result in lost voices. It causes swelling in and around the vocal chords.\n\nYou'll be tempted to clear your throat, but that makes it worse, as does coughing. You have to wait for the swelling to subside.
387292
No, it doesn't damage the voice box...it has a different density, thus sound travels faster in helium