Headphones

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Headphones have three main parts: a voice coil, permanent magnet, and cone-like diaphragm. The diaphragm vibrates when electrical currents run through the voice coil, converting the electricity into sound waves. There are three main types - sound canceling which emit opposite sound waves, open back which have hard backs, and closed back which have holes in the back. Headphones were first used for radio work in 1919 and now serve purposes like listening to music on devices and airplane pilots communicating.

Headphones: small loudspeaker (earphone) held over the ear by a band or wire worn on the head. A presentation by: S. Sikora

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As Digital Still Cameras (DSC) become smaller, cheaper and higher in resolution, photographs are increasingly prone to blurring from shaky hands. Optical image stabilization (OIS) is an effective solution that addresses the quality of images, and is an idea that has been around for at least 30 years. It has only recently made its way into the low-cost consumer camera market, and will soon be migrating to the higher end camera phones. This paper provides an overview of common design practices and considerations for optical image stabilization and how silicon-based MEMS dual-axis gyroscopes with their size, cost and performance advantages are enabling this vital function for image capturing devices

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Headphones are electronic audio device that people wear over their ears. They let people hear sounds on a walkman, MP3 player, mobile phone or computer. Headphones come in many different sizes from big to small. They are also known as earphones, stereophones, headsets or even 'cans'. Earbuds are inserted into the ear.[1] Headphones typically uses small plug for connection. Some use a Bluetooth connection so they don't have the cord in the way.[2] 1970's headphones Earbuds Wireless earbuds There is a risk of deafness if listening to headphones with a high volume for a long time.Headphones are electronic audio device that people wear over their ears. They let people hear sounds on a walkman, MP3 player, mobile phone or computer. Headphones come in many different sizes from big to small. They are also known as earphones, stereophones, headsets or even 'cans'. Earbuds are inserted into the ear.[1] Headphones typically uses small plug for connection. Some use a Bluetooth connection so they don't have the cord in the way.[2]Headphones are electronic audio device that people wear over their ears. They let people hear sounds on a walkman, MP3 player, mobile phone or computer. Headphones come in many different sizes from big to small. They are also known as earphones, stereophones, headsets or even 'cans'. Earbuds are inserted into the ear.[1] Headphones typically uses small plug for connection. Some use a Bluetooth connection so they don't have the cord in the way.[2]Headphones are electronic audio device that people wear over their ears. They let people hear sounds on a walkman, MP3 player, mobile phone or computer. Headphones come in many different sizes from big to small. They are also known as earphones, stereophones, headsets or even 'cans'. Earbuds are inserted into the ear.[1] Headphones typically uses small plug for connection. Some use a Bluetooth connection so they don't have the cord in the way.[2]Headphones are electronic audio device that people wear over their ears. They let people hear sounds on a walkman, MP3 player, mobile phone or computer. Headphones come in many different sizes from big to small. They are also known as earphones, stereophones, headsets or even 'cans'. Earbuds are inserted into the ear.[1] Headphones typically uses small plug for connection. Some use a Bluetooth connection so they don't have the cord in the way.[2]Headphones are electronic audio device that people wear over their ears. They let people hear sounds on a walkman, MP3 player, mobile phone or computer. Headphones come in many different sizes from big to small. They are also known as earphones, stereophones, headsets or even 'cans'. Earbuds are inserted into the ear.[1] Headphones typically uses small plug for connection. Some use a Bluetooth connection so they don't have the cord in the way.[2]Headphones are electronic audio device that people wear over their ears. They let people hear sounds on a walkman, MP3 player, mobile phone or computer. Headphones

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