Final answer:
Analog signals are continuous signals that vary from a minimum to a maximum value, such as the sound wave produced by a musical instrument.
Step-by-step explanation:
Analog signals are continuous signals that vary from a minimum to a maximum value. They can take any value within a given range. An example of an analog signal is the sound wave produced by a musical instrument. The amplitude of the sound wave can vary continuously, producing a continuous range of sound intensities.