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semitone |
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semitone an interval corresponding to a frequency difference of 100 cents as measured in the system of equal temperament, and denoting the pitch difference between certain adjacent degrees of the diatonic scale (diatonic semitone) or between one note and its sharpened or flattened equivalent (chromatic semitone); minor second semitone [′sem·i‚tōn] (acoustics) The interval between two sounds whose frequencies have a ratio approximately equal to the twelfth root of 2. Also known as half step. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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A middle dial, serving as a tone pointer or index, contains the digits 1-7 (diatonic scale pointers) and five asterisks (*) designating the intermediate semitones. This is a good time to remind the student that the altered tone, (the raised seventh degree) in the harmonic form, came about because, over time, the human ear came to prefer the sound of the semitone occurring between degrees seven and eight, but minor key signatures do not reflect the altered seventh tone. |
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