21. The ringing can be made to go away when patients are exposed to many hours of different single tones . 22. The single tone coinciding with the third stroke of clave is known as " ponche ", an important syncopated accent. 23. In multisyllable words, a single tone may be carried by the entire word rather than a different tone on each syllable. 24. If you could hear an infinitely small moment of a song, you would hear a single tone of a certain hertz. 25. Some subjects only heard a single tone that moved between ears but did not change in pitch, or changed very slightly. 26. For example, a single tone can represent a color, a season or even something as unusual as a human internal organ. 27. This special edition model was painted a single tone " Nightwatch Blue " with gold pinstriping with a matching blue Landau roof. 28. For example, the encoder sends a single tone followed by 50 to 1, 000 milliseconds of silence and then a second tone. 29. Some of these ringers produced a single tone , but others produced a sequence of two or three tones or a musical melody. 30. The single tone 8, dual tone 9 / 12 and dual tone 10 / 12 rotors were derived from Federal Signal Corporation.
