Which type of noise is commonly used in masking, containing equal energy in all frequencies?

White noise is characterized by having equal intensity across all frequencies, which makes it effective for masking purposes. This uniform distribution of sound helps to obscure other sounds by creating a consistent auditory backdrop, making it harder for the listener to detect specific frequencies or tones. In audiology, white noise is often utilized in both clinical settings and therapeutic situations to mask background noise, assist with tinnitus management, or conduct hearing assessments.

The effectiveness of white noise in masking is due to its capacity to cover a wide range of frequencies, thus providing a comprehensive sound that can mask not only high or low frequencies but everything across the spectrum equally. This capability distinguishes it from other types of noise, which may focus on or emphasize specific frequency ranges.