Combination Tones and Other Related Auditory Phenomena

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Excerpt from Combination Tones and Other Related Auditory Phenomena: A Dissertation Submitted to the Faculty of the Graduate School of Arts and Literature in Candidacy for the Degree of Doctor of Philosophy, Department of Psychology The first part of this monograph is devoted primarily to a critical exposition of the important theories of combination tones and a statement of the facts upon which they rest. This undertaking inevitably leads to the mention of a considerable number of closely related phenomena whose significance for general theory is often crucial. In view of the conditions prevailing in the literature of the subject, it has been thought expedient that this presentation should in the main follow chronological lines. The full analytical table of contents, together with the division into sections, will readily enable readers who so desire to consult the text on special topics. The second part of the monograph reports certain experimental observations made by the author on summation tones. In the pages which follow several physical terms are used which are commonly understood and need no definition here. A few may be new to readers not familiar with the literature of acoustics. A pendular (or pendulum) vibration is a simple, or sinus-form, vibration. In several quotations the wor note, and sometimes sound, occurs where the mean ing is precisely that of the word tone. Interruption tone is used synonymously with intermittent tone. By transformation of the primaries is meant the process of superposition of vibrations explained by Helmholtz in his mathematical determination of the origin of combination tones. A combination tone may, of course, be either a difference tone or a summation tone. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.