Sound motion pictures : from the laboratory to their presentation (1929)

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CHAPTER X THE FUNDAMENTALS OF SPEECH, MUSIC, AND HEARING The chapter on acoustics, in the part of this volume devoted to the theatre, was not, as the reader knows, a mere gesture of respect to theory. On the contrary, it revealed the forces and limitations of nature that not merely respond to the machine but make its function possible. Reverberation and absorption were seen to be physical realities which at times threatened and at times aided exhibition, but which in either case must be controlled in order to guarantee definite effects. The discussion revealed management in the act of "managing the theatre" with a vengeance! If the study of "inanimate" nature be important, what can we say of the study of that animate mystery, man, without whose voice and ear the whole combination of machine and auditorium would be impossible! If we use the term "mechanism" in place of machine, we find ourselves considering two of the oldest machines on earth — the organs in the body that produce speech and song, and the organs in the body that receive speech and song back into the body! And although, as I have said, the whole business is a mystery and a miracle, nevertheless, the observable apparatus has so long been part of knowledge and so often explained and understood that, by comparison with the novel, complex machine that is the handiwork of men, the older creation of God is at least on the surface quite easy to comprehend. 2«S