| 21. | All musical instruments produce complex ( non-sine wave ) tones.
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| 22. | These formulas are for single-frequency sine waves or narrowband signals.
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| 23. | For example, an 11kHz sine wave sounds quite different from a 19kHz sine wave.
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| 24. | Modern devices are used to construct a perfect sine wave.
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| 25. | For NTSC, the subcarrier is a 3.58 MHz sine wave.
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| 26. | Take for example a sine wave that, for some portion, matches the values above.
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| 27. | Here's a thought : the AC mains are sine waves.
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| 28. | Some recent all-digital detectors can synthesise a sine wave instead of a square wave.
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| 29. | The sine-wave distortions are compound projections of intersecting sine waves.
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| 30. | A whistling sound is pretty close to a sine wave.
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