. The cyclopaedia; or, Universal dictionary of arts, sciences, and literature. Encyclopedias and dictionaries. TRUMPET. When the found of the trumpet is well managed, it is of octaves, which is the limit of the ufual keys of fpinne;; a great compafs. Indeed its extent is not ftri&ly determin- organs. able ; iince it reaches as high as the ftrength of the breath 'The ufual founds of the trumpet are reprefented by the can force it. A good breath will carry it beyond four following mufical ilillii There is an F% in :he common tmnip:t unt in this Scale. #£— I Here the loudeft found bei
. The cyclopaedia; or, Universal dictionary of arts, sciences, and literature. Encyclopedias and dictionaries. TRUMPET. When the found of the trumpet is well managed, it is of octaves, which is the limit of the ufual keys of fpinne;; a great compafs. Indeed its extent is not ftri&ly determin- organs. able ; iince it reaches as high as the ftrength of the breath 'The ufual founds of the trumpet are reprefented by the can force it. A good breath will carry it beyond four following mufical ilillii There is an F% in :he common tmnip:t unt in this Scale. #£— I Here the loudeft found being denoted by 1, the pitch of the reft, or the number of their refpe&ive vibrations, during the time that C vibrates once, will be expreffed by the numbers denoting the order of their founds, 2, 3, 4, 5, &c. The founds expreffed by the mufical numbers, that is, by 2, 3, 5, and their compofites, which are 4, 6, 8, 9, 10, 12, 15, 16, are all perfectly in tune; but the founds ex- preffed by numbers not mufical, as 7, 11, 13, 14, are falfe. Three of thefe, viz. Bb> its oftave, and A, diftinguifhed by f placed over them, are too flat ; and the remaining note F, marked with an S, is too fharp. See Musical Numbers. The reafon of which is, that B b ought to be a tone major below C : that is, its pitch to that of C will be as 8 to 9 ; but the proportion given by the trumpet is as 7 to 8 ; which being a lefs proportion than that of 8 to 9, it follows that B b wll be too flat. The fame holds true of its octave. And A being a tone minor above G, it ought to be to G as lO to 9 : but in the trumpet, it is to G as 13 to 12 ; which being lefs than the proportion of 10 to 9, it follows that A will be too flat. On the other hand, F ought to be a femitone major above E ; that is, F ought to be to E as 16 to 15; but in the trumpet, F is to E as 11 to 10 ; which being a greater proportion than that of 16 to 15, it follows that F is too high or too fharp. This fyftem of trumpet-notes i
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Keywords: ., bookcentury1800, bookdecade1810, booksubjectencyclo, bookyear1819
