| 41. | The control channels use signalling at 1, 200 bits per second with fast frequency shift keying ( FFSK ) subcarrier modulation.
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| 42. | The voice was keyed to two 16-inch vinyl phonograph records that contained a Frequency Shift Keying ( FSK ) audio tone.
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| 43. | Emission theory asserts that Doppler shifting of light from a moving source represents a frequency shift with no shift in wavelength.
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| 44. | Speech sounds also have duplicable higher-order characteristics such as rates and shape of modulations and rates and shape of frequency shifts.
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| 45. | �lectricit?de France ( EDF ) developed a system called " spread frequency shift keying " or S-FSK . See IEC 61334.
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| 46. | This frequency shift is not a Doppler shift, but is rather an optical cavity resonance effect, as explained below in Ring lasers.
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| 47. | Any Doppler frequency shift on the received signals will degrade the ripple cancelation process and this is discussed in more detail next.
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| 48. | The second term represents the frequency shift in the photoacoustic wave due to the motion of the absorbers observed by the ultrasonic transducer.
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| 49. | For measurements of chemical forces the effect of the long range van der Waals forces must be subtracted from the frequency shift data.
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| 50. | As the article currently stands we engage the reader from the perspective that there are many ways to explain frequency shifts observed in nature.
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