Yet another situation of interference results when two tones sounded together create a subjectively heard 3rd tone. When this third tone is lower in pitch than the initial two, it is named a distinction tone; i.e., its frequency is the distinction between the frequencies of the two primary tones. https://techonpage.com/story5167766/how-illusion-of-kundun-mu-online-can-save-you-time-stress-and-money