how are pictures and sound transferred to magnetic tape?

Answer 1

Analog or digital?

Either way it is being accomplished in a similar way. The main question is how the signal is stored in the first place.

Magnetic media recording is similar to older vinyl recording. In vinyl recording a groove was cut and as a stylus moved in this groove its movement would be picked up by a magnetic sensor and amplified. As the signal was amplified we could hear the recorded sound. Recording was done similarly only in reverse.

In magnetic media the signal received by a microphone gets amplified and being sent to a write head. The write head is an electromagnet, which magnetizes magnetic tape as it moves past the head. The playback of the recorded signal is performed in reverse by using the read head.

The picture is a bit more complicated, however it is recorded in the same way as sound. A picture is divided into a matrix of horizontal and vertical cells we can call pixels or picture elements. If we code a position of every pixel, it’s intensity, color on to a tape we can play it back in an analogous way we have done that with sound. One full set of these pixels is called a frame. The only difference is instead of a speaker we will employ a video screen.

I hope that helps.

Answer 2

Very imprecise question, you desire to be greater specific. What sound potential, and circulate from what to what? The magnetic field in a speaker transfers potential from electric powered to sound, working example. .

Answer 3

Digital-binary