Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 719
the same fun-damental note. Other vocalsounds than sustained vowelnotes are found to be due tostill more complicated combinations of vibrations of shorter duration,and noises, as distinguished from musical sound, are formed alsoby the superposition of a greater or less number of systems… … Fig. 319(5.—Phonautographic Tracingsof Different Vowel Sounds. THE PHONOGRAPH. ■which a musical ear can detect. If the reader will hold a pencil or pen-holder at one end and tap with it on the edge of the table, passing inquick succession to parts progressively nearer where the pencil is held,he…
Inventions
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
