What process involves extracting the original information signal from the modulated carrier wave?

The process that involves extracting the original information signal from the modulated carrier wave is demodulation. This is a critical step in communication systems where information is transmitted over distances. When information, such as voice or data, is sent over a carrier wave, it is modulated to ensure that it can travel efficiently and properly through various mediums.

Demodulation, therefore, is the reverse of modulation. It takes the modulated carrier and separates the information signal from it at the receiving end. This allows the original message to be reconstructed and understood. It is essential in scenarios such as radio transmission, where audio signals are carried over electromagnetic waves, or in digital communications, where binary data is transmitted over the Internet.

Understanding demodulation is vital for anyone in the field of information technology and telecommunications, as it plays a crucial role in ensuring that communication systems function correctly and that data can be accurately retrieved and interpreted.