Whois & Analysis for rockandsoul.com

The phonograph is a device invented in 1877 for the mechanical recording and reproduction of sound.

In its later forms it is also called a gramophone (as a trademark since 1887, as a generic name since c.

1900).

The sound vibration waveforms are recorded as corresponding physical deviations of a spiral groove engraved, etched, incised, or impressed into the surface of a rotating cylinder or disc, called a "record".

To recreate the sound, the surface is similarly rotated while a playback stylus traces the groove and is therefore vibrated by it, very faintly reproducing the recorded sound.

In early acoustic phonographs, the stylus vibrated a diaphragm which produced sound waves which were coupled to the open air through a flaring horn, or directly to the listener's ears through stethoscope-type earphones.

In later electric phonographs (also known as record players (since 1940s) or, most recently, turntables), the motions of the stylus are converted into an analogous electrical signal by a transducer, then converted back into sound by a loudspeaker.

Headphones (or head-phones in the early days of telephony and radio) are a pair of small listening devices that are designed to be worn on or around the head over a user's ears.

They are electroacoustic transducers, which convert an electrical signal to a corresponding sound in the user's ear.

Headphones are designed to allow a single user to listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air, for anyone nearby to hear.

Headphones are also known as earspeakers, earphones or, colloquially, cans.

Circumaural and supra-aural headphones use a band over the top of the head to hold the speakers in place.

The other type, known as earbuds or earphones consist of individual units that plug into the user's ear canal.

In the context of telecommunication, a headset is a combination of headphone and microphone.

Headphones connect to a signal source such as an audio amplifier, radio, CD player, portable media player, mobile phone, video game console, or electronic musical instrument, either directly using a cord, or using wireless technology such as bluetooth or FM radio.

The first headphones were developed in the late 1800s from telephone receivers for use by telephone operators, to keep their hands free.

Initially the audio quality was mediocre and a step forward was the invention of high fidelity headphones.

Manhattan is the most densely populated borough of New York City, its economic and administrative center, and the city's historical birthplace.

The borough is coextensive with New York County, founded on November 1, 1683, as one of the original counties of the U.S. state of New York.

The borough consists mostly of Manhattan Island, bounded by the East, Hudson, and Harlem rivers, and also includes several small adjacent islands and Marble Hill, a small neighborhood on the U.S. mainland.

In audio engineering, a fade is a gradual increase or decrease in the level of an audio signal.

The term can also be used for film cinematography or theatre lighting in much the same way (see fade (filmmaking) and fade (lighting)).

A stylus, plural styli or styluses, is a writing utensil, or a small tool for some other form of marking or shaping, for example in pottery.

It can also be a computer accessory that is used to assist in navigating or providing more precision when using touchscreens.

It usually refers to a narrow elongated staff, similar to a modern ballpoint pen.

Many styluses are heavily curved to be held more easily.

Another widely used writing tool is the stylus used by blind users in conjunction with the slate for punching out the dots in Braille.