masking threshold

Masking threshold refers to the level at which one sound makes another sound difficult or impossible to hear. When two sounds are similar in frequency and close in time, the louder one can "mask" the quieter one, preventing it from being perceived. This concept is important in audio compression and hearing science, as it helps determine which sounds can be safely reduced or removed without affecting overall perception. Essentially, the masking threshold defines the minimal level at which a sound becomes inaudible due to the presence of a louder, masking sound nearby.