41. Additive synthesis most directly generates sound by adding the output of multiple sine wave generators. 42. All the filter settings are adjustable, in case you care to buff the sine waves . 43. Play known sounds like sine waves and then record it and look at the waveform. 44. Vertical lines have been drawn through the points where each sine wave passes through zero. 45. The usual waveform of alternating current in most electric power circuits is a sine wave . 46. A pure sine wave is an artificial sound. 47. All you see are the bright white sine waves moving across blue or gray rippled surfaces. 48. Consider two sine waves of unit amplitude: 49. I would just watch the sine waves traveling left to right across the screen on the oscilloscope. 50. But a sine wave is preferred.
