What are all difference frequencies generated during modulation called?

The term that describes all the difference frequencies generated during modulation is known as the lower sideband. When a signal is modulated, it creates sidebands that represent the new frequencies formed by the interaction of the carrier frequency and the modulating signal. In amplitude modulation (AM), this process results in an upper sideband and a lower sideband.

The upper sideband contains frequencies that are higher than the carrier frequency, while the lower sideband consists of frequencies that are lower than the carrier frequency. The lower sideband is particularly important because it contains the information of the original signal, and in many cases, it can convey the requisite information without the need for the upper sideband.

Understanding the concept of sidebands in modulation is essential as it helps in the design and analysis of communication systems. The choice of frequencies and their implications in signal processing are crucial for effective transmission and reception of information.