A Method for the Qualitative Analysis of Musical Tone ... (Google eBook)

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Johns Hopkins university., 1911 - Sound - 76 pages
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Page 33 - TONE. 33 by the several components. This has been done to obtain the ordinates used in Fig. 7. It must be borne in mind that in this and similar graphical representations of tone quality only the ordinates have a meaning, the lines joining the summits of these ordinates being merely a means of showing that these ordinates belong to the same tone, in a way to appeal easily to the eye. Record of...
Page 23 - Scripture' studied enlarged phonograph records. Dayton Miller4 has recently used an improved oscillograph method. As has been said, none of these methods has as yet furnished quantitative results, and they can hardly be expected to do so unless greatly improved in the future. The use of resonators by Helmholtz and Koenig depends on the human ear in one case and on manometric flames in the second, and either can only give qualitative results.
Page 31 - TONE. wall of the room, its height from the floor being kept constant. The room was an octagonal one about 4.5 meters across. The resonators were near the opposite wall of the room. It is interesting to note that the maxima (or minima) of the first and third partials are found at points separated by distances nearly equal to their respective wave-lengths (for first partial X = 130 cm., for third, - O too MO ISO ISO MO ISO IGO 1*70 Distance from Vv&ll in Cm.
Page 23 - ... results. The other methods are dependent on the analysis of irregular curves, which is a difficult and not always certain process. There is also in many cases the complication introduced by the membrane or other parts of the recording device having free periods of their own. So the first step of this work was to look for a better method of analysis.

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