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Different behaviour of quadratic and cubic difference tones

✍ Scribed by Zwicker, E.

Book ID
123355225
Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
663 KB
Volume
1
Category
Article
ISSN
0378-5955

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A brief kinematic analysis demonstrates one cause of sum and difference tones to be the interaction of sound waves with rotating blade rows. The sum tones are shown, paradoxically, to be always closer to cut-off than the incident wave, whereas the difference tones can be at a higher cut-off ratio.