This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...bridge. The intensity of the tones can be varied by exciting the source less vigorously or by cutting off part of the conducting channel to the observer. If the source is a Quincke tube or reed-pipe the tube which carries the air into the tube can be partly closed. The effort to cut down the intensity of a sound after ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...bridge. The intensity of the tones can be varied by exciting the source less vigorously or by cutting off part of the conducting channel to the observer. If the source is a Quincke tube or reed-pipe the tube which carries the air into the tube can be partly closed. The effort to cut down the intensity of a sound after it has been produced is always complicated by the fact that the walls of the conductor are as likely to carry the vibrations as the columns of air inside of the conductor. It is better, therefore, to regulate the sound at its source. For the third part of the experiment two chromatic pitch-pipes or two Stern's variators are the best devices. In working with intervals, the simplest procedure is to have one source adjustable (for example, either a chromatic pitch-pipe or a tone-variator) and the other fixed. Now sound the interval between the two, and immediately after vary one of the sources slightly and repeat. It will be found that the ability to recognize intervals is in general very highly developed. B--RESULTS A table showing the distribution of judgments in the first experiment of the exercise with three untrained observers is as follows: Judgments The degrees of fusion here indicated do not agree in detail with Stumpf's table, but they give a sufficiently clear indication of the difference between CC and CG on the one hand and such combinations as CB and CD on the other hand. Stumpf recognizes five degrees of fusion: from the most complete in the octave, CC, through 2d) the fifth, CG, 3d) the fourth, CF, 4th) the pure thirds and sixths, CE and CA, to 5th) minor sevenths and other combinations, CB and CD. When one tone is stronger than the other, fusion is more complete, the stronger tone dominating the whole percept. The ability to discr...
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Add this copy of Laboratory Equipment for Psychological Experiments to cart. $31.40, new condition, Sold by Media Smart rated 4.0 out of 5 stars, ships from Hawthorne, CA, UNITED STATES, published 2016 by Wentworth Press.
Add this copy of Laboratory Equipment for Psychological Experiments to cart. $59.74, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.
