Multiple frequency-shift keying
Multiple frequency-shift keying (MFSK) is a way to send information from one place to another using different pitches or tones of sound. It's like playing a musical instrument, but instead of making music, we're sending secret messages.
Let's say we have three different notes, a low note, a medium note, and a high note. We can use these notes to represent different letters, numbers, or words. For example, we can use the low note to represent the letter "A," the medium note for "B," and the high note for "C."
To send a message using MFSK, we first break our message down into small pieces, like letters or numbers. Then, we use a computer or a special device to turn each letter or number into a combination of these three notes.
For example, if our message is "ABC," we would use the low note for "A," the medium note for "B," and the high note for "C." So, our message would sound like "dee-doo-doo-doo-dah-dee-doo-dah-dah-doo-doo-doo-dah-dah-dah."
At the receiving end, another computer or device can match the notes to letters or numbers, and decode the message back into its original form.
MFSK can be used to send messages over long distances, such as between different cities or even countries, using electronic devices like radios or satellites. It's a clever way of sending information that is secure, because it would be difficult for someone to listen in and understand the message without knowing the code for the notes.
Let's say we have three different notes, a low note, a medium note, and a high note. We can use these notes to represent different letters, numbers, or words. For example, we can use the low note to represent the letter "A," the medium note for "B," and the high note for "C."
To send a message using MFSK, we first break our message down into small pieces, like letters or numbers. Then, we use a computer or a special device to turn each letter or number into a combination of these three notes.
For example, if our message is "ABC," we would use the low note for "A," the medium note for "B," and the high note for "C." So, our message would sound like "dee-doo-doo-doo-dah-dee-doo-dah-dah-doo-doo-doo-dah-dah-dah."
At the receiving end, another computer or device can match the notes to letters or numbers, and decode the message back into its original form.
MFSK can be used to send messages over long distances, such as between different cities or even countries, using electronic devices like radios or satellites. It's a clever way of sending information that is secure, because it would be difficult for someone to listen in and understand the message without knowing the code for the notes.
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