Headset demands have risen with more consumers relying on cell phones and audio devices for communication and entertainment. The best feature is the use of noise-cancelling technology which filters outside noise to deliver only what is being played on a device.

As technology continues to tweak existing systems Javier Guemez World Cup Jersey , the list of headset types has lengthened. So too have features and styles. Take a look at what available.

Technology

Noise-cancelling technology has proved critical in producing clear, distortion-free sound. It uses a bi-directional microphone that functions in a figure '8' field. Sound is picked up at close proximity so outside noise is shut out. Microphones which are omni-directional but with the same technology gather sound from a 360-degree field so do not do all that well to filter ambient noise.

Wireless technology has seen widespread use in headsets. Bluetooth headsets are popular because of the neat, hassle-free style. However, limitations like permitting communication only over short distances means they're best used by cell phone users. An alternative is a Bluetooth desktop service which allows VoIP and fixed-line communication.

Types

Headset type is subdivided into what it's used for as well as what it's used with but this may cross platforms. An example is headsets used with computers and cell phones. If they feature the same connectors (3.5 mm Javier Aquino World Cup Jersey , for instance) and both system have this jack socket, they may be interchanged. However, some high-end phones rely on Bluetooth technology in which case they may not be interchangeable.

Telephone headset: Telephone headsets facilitate communication over fixed lines. Call center employees are regular users. The devices are connected using any one of several connectors, popular examples being RJ-9 connectors Isaac Brizuela World Cup Jersey , 2.5 mm jack sockets and Bluetooth for hands-free communication.

Cell phone headsets: Usually hands-free, mobile phone headsets consist of an earphone containing a microphone module. Stereo earphones are also popular.

Computer headsets: Computer headsets may be analog or digital (Bluetooth or USB). Cups are typically large to fit the entire ear for comfort and noise reduction. Most plug in using a standard 3.5 mm jack. Those with microphones connect through a line-in while speakers deliver sound through a line-out.

Styles

Style is as important to consumers as type and technology. Since many users require devices on the go, comfort and convenience rate highly.

Over-the-ear: Over-the-ear headsets, like those common with computer headsets Hugo Ayala World Cup Jersey , feature large cups and cushions that cover the whole ear. Cups may swivel as in the case of DJ headphones or have an extended microphone for communicating with gamers.

The headsets make use of either active or passive noise cancellation. The first refers to sound produced by the headset to cancel ambient noise while the second muffles sound using cups and cushions.

On-ear: On-ear headsets are smaller than over-the-ear styles but also contain cushions. They rest directly on the ear rather than covering it completely. They're less expensive and lighter but high quality models produce better sound than mid-range over-the-ear headsets.

In-ear: In-ear devices, earphones or earbuds fit into the ear. They've become standard with most cell phone use. In place of cushions, silicone and rubber are used to provide comfort. Unlike other styles, in-ear sets block out almost all ambient noise as they fit snugly into the ear canal.

Aside from the microphone Hirving Lozano World Cup Jersey , headset styles can feature bands that go over the head, behind the neck or over the ear which feature hooks to rest on the ear.

NEW YORK, July 21 (Xinhua) -- U.S. stocks opened lower on Tuesday as the second-quarter earnings season gets into full swing with Apple scheduled for release after the closing bell.


International Business Machines Corporation (IBM) shares slumped over 5 percent in early trading on Tuesday as its revenues missed Wall Street estimates.


IBM announced second-quarter 2015 diluted earnings from continuing operations of 3.58 U.S. dollars per share, down 15 percent year on year.


Shares of Verizon dipped 2.7 percent in early trading after the company delivered quarterly earnings above estimates and revenues shy of forecast.


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Apple was also in spotlight as the iPhone maker is expected to post its earnings report after Tuesday's closing bell. Analysts polled by Thomson Reuters expected that the tech giant's earnings per share is seen increasing to 1.79 dollars from 1.28 dollars a year earlier.


No major U.S. economic data is due out on Tuesday. Existing home sales are scheduled for release on Wednesday and new home sales are on Friday.


U.S. stocks ended slightly higher on Monday, with the Nasdaq Composite Index setting a closing record for the third straight session, as investors digested positive second- quarter earnings reports.


Shortly after the opening bell, the Dow Jones Industrial Average fell 60.10 points Hector Herrera World Cup Jersey , or 0.33 percent, to 18,040.31. The S&P 500 lost 1.16 points, or 0.05 percent Guillermo Ochoa World Cup Jersey , to 2,127.12. The Nasdaq edged down 0.69 point, or 0.01 percent, to 5 Giovani Dos Santos World Cup Jersey ,218.17.

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