An electrical method of studying sound waves (1920)
Owens, Thurston Dorr · leaf 23
the linear motion. On the opposite endof the arm is fastened the tracing point of a planimeter which integrates the area of the figure described by the two motions. Thisarea divided by the number of the harmonic sought is proportionalto the corresponding constant in the Fourier Series. Each… … Fig. 2
Sound-waves · Electronic instruments · Theses
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
