A further case of interference benefits when two tones sounded together make a subjectively heard 3rd tone. When this 3rd tone is decreased 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 initial tones. https://easiestbookmarks.com/story19843531/the-single-best-strategy-to-use-for-illusion-of-kundun-mu-online