What type of modulation is characteristic of digital radio signals?

Digital radio signals predominantly use binary modulation, which involves the representation of audio or data signals using discrete levels or states. This modulation type is fundamental to the operation of digital communication systems as it allows for efficient transmission of data over radio waves by encoding information in the form of binary digits (0s and 1s).

Binary modulation is particularly advantageous because it is less susceptible to noise and interference, which is crucial for maintaining signal integrity in various operating environments. Additionally, binary modulation enables the implementation of advanced error correction techniques, further enhancing the reliability of digital broadcasts.

The other forms of modulation, such as amplitude modulation and frequency modulation, primarily pertain to analog signals. While these are still in use, especially in traditional AM and FM radio broadcasts, they do not inherently leverage the digital encoding of information in the same way that binary modulation does, making them less characteristic of digital radio signals. Phased modulation involves varying the phase of a signal but is not as commonly aligned with typical digital radio standards when discussing modulation types specific to digitized content.