what is the mechanism of the headphone (how does it works)?
356195
You might find a more accurate answer in an acoustic book, but basically works the same as a speaker, it has some inductors around a magnet that makes a membrane move rapidly making some pressure in the air making the sound.
1100524
A hearing loop is known as an induction loop - a cable that circles the listening area. \nIt is fed by current from a loop amplifier. The amplifier receives its signal from a microphone or by means of a direct connection from another sound source, such as a sound reinforcement system. \nThe resulting electric current in the loop produces a magnetic field, which corresponds to the sound. \nA hearing aid will pick up this magnetic field if the wearer is sitting within the area of the loop and the hearing aid - or loop listening aid - is switched to the  'T' position. \nBut the wearer will need to adjust their own hearing aid for volume.
305120
I assume you know that the ear is composed of the outer ear, the middle ear and the inner ear. Here’s the gist of it:\n\nSound Source  Sound Medium (Air)  Ear (Auditory Canal)  Eardrum Vibrates [Acoustic Energy]  Ossicles Bones Vibrate [Mechanical Energy]  Fluids in the Cochlea Vibrate [Hydrolic Energy]  Auditory Nerve (8th Cranial Nerve) [Nerve Impulses]   Brain (the vestibular centers (nuclei) in the Brainstem)  1) Ipsilateral Cochlear Nucleus  2) Superior Olivary Nucleus  3) Inferior Colliculus Medial Geniculate Nucleus (Sensory Thalamus)  Auditory Cortex (Temporal Lobe).\n\nIn relation to the ‘loud sound’, I assume you mean ASR: Acoustic Startle Reflex:\n\nLoud sounds causes the Stapedius Muscle (which is innervated by the 7th cranial nerve (facial nerve)) to tighten the Stapes (ossicles) in an attempt to ATTENUATE the sound and protect the eardrum. The Acoustic Reflex Arc ascends from the outer ear to the brainstem and then descends via the facial nerves on both sides of the head to innervate the stapedial muscles in both middle ears.\n\nThe ASR Circuit is as follows: Cochlear Nucleus  Ventral Lateral Pons [Brainstem]  Reticular Formation (pons) [Brainstem]  Spinal Motor Neurons (whole body startle).
711612
A miniature microphone (electret) and signal amplifier to trigger the device.\n\nWith the proper associated components (coil, capacitors, resisters) the operation can be activated only by a limited frequency range or volume or both.
730275
It's called 'impulse' and any good, lower division, physics book will have an explanation of what it is and how it works.\n\n\nDoug
858965
It's just the earlobe (that soft part they usually pierce) Attached earlobes are usually smaller, and they attach to the side of the face pretty far down on the side.  Free earlobes dangle down, and there's space between them, and the side of the face until the lobe connects with the cartillage (hard) part of the ear that you stick your ipod buds into.\n\nConfused? well, sorry, it's late, and that's the best I can do right now.
431151
Smack the marimba with some force (F).\n\nBecause bar of the marimba can oscillate minimally, it acts like a spring with a very low spring constant (k).  So the bar will be displaced some distance x, where (x = F/k).\n\nThe vibrating bar, at each oscillation, will either compress or rarefract the surrounding air, creating pulses.  These pulses are sound waves, which then travel to the ear and are heard as sound.
820083
first check if the driver for sound card is installed correctly.\ntake properties of my computer\nclick on hardware tab then Device Manager button\nnow click on sound,video and game controler \nand see if drivers are installed(no yellow icon there) \nif driver is not there then install the driver for you card\n\nif its ok goto control panel\nand click on "Sounds and Audio Devices" icon \nclick on sound tab \nselect any of the event sound and press play button \nif no sound comes out then probabaly its your headphone problem\n\nhope this will help you
758561
All modern microphones do it electronically rather than mechanically. A microphone wants to take varying pressure waves in the air and convert them into varying electrical signals. There are five different technologies commonly used to accomplish this conversion: \n\nCarbon microphones - The oldest and simplest microphone uses carbon dust. This is the technology used in the first telephones and is still used in some telephones today. The carbon dust has a thin metal or plastic diaphragm on one side. As sound waves hit the diaphragm, they compress the carbon dust, which changes its resistance. By running a current through the carbon, the changing resistance changes the amount of current that flows. \n\nDynamic microphones - A dynamic microphone takes advantage of electromagnet effects. When a magnet moves past a wire (or coil of wire), the magnet induces current to flow in the wire. In a dynamic microphone, the diaphragm moves either a magnet or a coil when sound waves hit the diaphragm, and the movement creates a small current. \n\nRibbon microphones - In a ribbon microphone, a thin ribbon is suspended in a magnetic field. Sound waves move the ribbon which changes the current flowing through it. \n\nCondenser microphones - A condenser microphone is essentially a capacitor, with one plate of the capacitor moving in response to sound waves. The movement changes the capacitance of the capacitor, and these changes are amplified to create a measurable signal. Condenser microphones usually need a small battery to provide a voltage across the capacitor. \n\nCrystal microphones - Certain crystals change their electrical properties as they change shape. By attaching a diaphragm to a crystal, the crystal will create a signal when sound waves hit the diaphragm. \n\nAs you can see, just about every technology imaginable has been harnessed to convert sound waves into electrical signals. The one thing they all have in common is the diaphragm, which collects the sound waves and creates movement in whatever technology is being used to create the signal.
555249
A USB.\n\nEven Cordless headphones need a usb connect with the PC so that they can relay the info from PC to the headphones.
493474
you cant produce true 3D sounds out of just two speakers, for stereo sound you need two speakers to give you a Left/Right, for true 3D sound you will need three additional speakers to give you the effect of surround sound.\nif someone tells you that he can produce surround sound out of a stereo headphone he is lying because that's impossible.
648608
Usually when you plug your headphones into the headphone jack in your soundcard (at the back of your computer) the speakers will be unplugged (for external) and it will automatically shut off sound to your computer speakers.  The soundcard is the thing that usually has about 3 jacks in it.  Sometimes their colored black for headset, red for microphone or one for left and right speaker and one for mic and one for headset.  Look for the symbol of a headset in the soundcard.  That should do it.
873537
When a person speaks into a telephone, the sound waves created by his voice enter the mouthpiece. An electric current carries the sound to the telephone of the person he is talking to. A telephone has two main parts: (1) the transmitter and (2) the receiver.\nThe Transmitter of a telephone serves as a sensitive "electric ear." It lies behind the mouthpiece of the phone. Like the human ear, the transmitter has an 14 eardrum." The eardrum of the telephone is a thin, round metal disk called a diaphragm. When a person talks into the telephone, the sound waves strike the diaphragm and make it vibrate. The diaphragm vibrates at various speeds, depending on the variations in air pressure caused by the varying tones of the speaker's voice.\n\n\nBehind the diaphragm lies a small cup filled with tiny grains of carbon. The diaphragm presses against these carbon grains. Low voltage electric current travels through the grains. This current comes from batteries at the telephone company. The pressure on the carbon grains varies as sound waves make the diaphragm vibrate. A loud sound causes the sound waves to push hard on the diaphragm. In turn, the diaphragm presses the grains tightly together. This action makes it easier for the electric current to travel through, and a large amount of electricity flows through the grains. When the sound is soft, the sound waves push lightly on the diaphragm. In turn, the diaphragm puts only a light pressure on the carbon grains. The grains are pressed together loosely. This makes it harder for the electric current to pass through them, and less current flows through the grains.\n\n\nThus, the pattern of the sound waves determines the pressure on the diaphragm. This pressure, in turn, regulates the pressure on the carbon grains. The crowded or loose grains cause the electric current to become stronger or weaker. The current copies the pattern of the sound waves and travels over a telephone wire to the receiver of another telephone.\n\n\nThe Receiver serves as an "electric mouth." Like a human voice, it has "vocal cords." The vocal cords of the receiver are a diaphragm. Two magnets located at the edge of the diaphragm cause it to vibrate. One of the magnets is a permanent magnet that constantly holds the diaphragm close to it. The other magnet is an electromagnet. It consists of a piece of iron with a coil of wire wound around it. When an electric current passes through the coil, the iron core becomes magnetized. The diaphragm is pulled toward the iron core and away from the permanent magnet. The pull of the electromagnet varies between strong and weak, depending on the variations in the current. Thus, the electromagnet controls the vibrations of the diaphragm in the receiver.\nThe electric current passing through the electromagnet becomes stronger or weaker according to the loud or soft sounds. This action causes the diaphragm to vibrate according to the speaker's speech pattern. As the diaphragm moves in and out, it pulls and pushes the air in front of it. The pressure on the air sets up sound waves that are the same as the ones sent into the transmitter. The sound waves strike the ear of the listener and he hears the words of the speaker.
800133
i have mp3DirectCut,\nand Audio MP3 Converter,\nbut i just recently download these programs and i don't even know how they work yet
1112905
there are many possibilities, 1st check speaker of your head phone by playing any sound file. if sound not comes, check \n\nData cable connection with sound card.\nSound Volume\nMute option\nData cable,\nSound driver etc
429763
If you have the headpone port it works fine.
354652
good luck at any retail store u need a special cord i forgot what its called but i had to go to a music store and they had to custom order it...what it does is serve as a headphone set exept insted of a headphone u get another male jack to hook up to your amp ( with a converter of course) so basically its like a double male headphone cord