DICTAPHONE

WAX CYLINDER

MACHINE

A dictation machine is a sound recording device most commonly used to record speech for later playback or to be typed into print. It includes digital voice recorders and tape recorders.

WHAT IS A DICTAPHONE ?

ž It is a tape recorder that records what you say as well as reproducing your dictation for transcription.

ž  A tape recorder operated by a foot pedal.

ž A Dictaphone is a tape recorder (or digital) that records and reproduces dictation.

ž Dictation being what someone says.

ž  An electronic devise that someone could speak into (tape recorder type) and a typist could then type.

DICTAPHONE’S HISTORY

ž The Dictaphone's earliest development occurred at the Volta Laboratory established by Alexander Graham Bell in Washington, D.C. in 1881. When the Laboratory's sound recording inventions were sufficiently developed, Bell and his associates created the Volta Graphophone Company, which later merged with the American Graphophone Company, which itself later evolved into Columbia Records.

ž HOW IT CAN BE USE  ?

ž A Dictaphone is a tape recorder that you operate with your foot.

ž  Someone uses a Dictaphone to record a conversation etc. When you want to type it up you can listen and stop it with the foot pedal until, you get that part typed and keep going until it is finished. 

ž WHERE IT IS USED ?

ž Used to be used in offices. you talked into a speaker and it recorded on tape. your secretary then listened to tape and typed it out.

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ž it's a small, hand held tape recorder. Someone records a letter/memo/documents they want typed into it and then usually gives it to someone else to listen to and type up.

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ž It's a device for voice recording, now pretty much obsolete. It used to be used in offices - business people would "dictate" correspondence into the machine, then a secretary would play it back and type it up. 

SOME INTRESTING POINTS THAT WE SHOULD KNOW ABOUT DICTAPHONE

Dictaphone was an American company, a producer of dictation machines—sound recording devices most commonly used to record speech for later playback or to be typed into print. The name "Dictaphone" is a trademark, but in some places it has also become a common way to refer to all such devices"

The name "Dictaphone" was trademarked by the Columbia Graphophone Company in 1907, which soon became the leading manufacturer of such devices. This perpetuated the use of wax cylinders for voice recording. They had fallen out of favor for music recordings, in favor of disc technology. Dictaphone was

What is Radio recording ?

ž Radio recording means record a message which is coming from a sender and store it or transmit it through the signals transmitted in the air in form of analog signals.

ž Radio is the broadcasting of programmes for the public to listen to, by sending out signals from a transmitter. 

For better understand it let’s consider what is a radio  ?

ž You can refer to the programmes broadcast by radio stations as the radio.

ž  Radio is the broadcasting of programmes for the public to listen to, by sending out signals from a transmitter. 

ž Radio is a system of sending sound over a distance by transmitting electrical signals. 

ž If you radio someone, you send a message to them by radio

  types of radio  :

ž Digital radio

ž radio astronomy

ž radio cassette

ž radio-controlled

ž radio telephone

ž radio telescope 

ž Digital radio :

ž Digital radio is radio in which the signals are transmitted in digital form and decoded by the radio receiver. 

ž A digital radio is a radio that can receive digital signals. 

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RADIO ASTRONOMY

ž Radio astronomy is a branch of science in which radio telescopes are used to receive and analyse radio waves from space

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RADIO CASSETTE:

ž A radio cassette is a radio and a cassette player together in a single machine. 

 RADIO CONTROLLED:

ž A radio-controlled device works by receiving radio signals which operate it. 

RADIO TELEPHONE:

ž A radio telephone is a telephone which carries sound by sending radio signals rather than by using wires. Radio telephones are often used in cars.

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RADIO TELESCOPE:

ž A radio telescope is an instrument that receives radio waves from space and finds the position of stars and other objects in space