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Phase and Frequency Modulation

2009
This chapter contains sections titled: Covariance Functions and Spectra Limiting Forms Generalizations This chapter contains sections titled: References ]]>
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Perception of Frequency Modulation

The Journal of the Acoustical Society of America, 1967
The purpose of this experiment was to plot equal pitch-modulation contours as statistical functions of duration, direction, and extent of frequency modulation. Twenty college students listened to 66 quasipure tones each of which was a combination of one of six durations (40–1000 msec) and one of 11 extents of modulation (−10 to +10 semitones). Duration
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Frequency Modulation of Speech

The Journal of the Acoustical Society of America, 1964
Frequency modulation of speech is an effect produced by periodically modulating the speech frequencies during transmission. This effect is detectable by the wavering or buzzing quality that it imparts to the speech as received. The detection limits of frequency modulation of speech were determined using the Békésy tracking technique.
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Frequency Counting Modulator

IEEE Transactions on Communications, 1983
One modulation method called the frequency counting modulator (FCM), which can produce various constant envelope signals, is proposed. The FCM is materialized by only digital circuits and, therefore, is easily implemented in a large scale integrated circuit (LSI).
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A Modulated-Frequency System of Telemeterings

Transactions of the American Institute of Electrical Engineers, 1945
WITH today's centralized control and supervision of power systems, it is essential that the man at the controls knows what is going on at all outlying stations and interconnection points. Telemetering equipment keeps him informed of load changes, transfer of power from one system to another, variations in voltage, and all other values that are ...
Harold E. Renfro, Arthur Perry Peterson
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Pulse Frequency Modulator

IETE Journal of Research, 1971
Constant current charging method for capacitances in an astable multivibrator has been used to achieve ± 400 c/s linear deviation in a pulse frequency modulator. The modulating frequency is 100 c/s sinusoidal on a carrier of 2 kc.
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Frequency Modulation Synthesis

1987
The presence of texture substantially increases the reality in the synthesized image. However, the synthesis of texture has been computationally expensive. This paper describes a method for texture synthesis by means of frequency modulation. Frequency modulation synthesis technique is an inexpensive approach to approximate complex waveforms. A waveform
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Transients in Frequency Modulation

Proceedings of the IRE, 1942
In a frequency-modulation system, a sudden jump in carrier frequency corresponding to a Heaviside unit signal will result in a transient depending on the receiving-filter bandwidth. If this bandwith exceeds twice the maximum frequency swing, the shape and duration of the transient is shown to be about the same as in an amplitude-modulation system with ...
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Amplitude and frequency modulation

1973
The transmission of audio frequencies (for example, speech and music) over a distance is usually performed by operating on one of the characteristics of a radio frequency wave. This wave, known as the carrier, will originally be sinusoidal with constant amplitude and frequency.
D. Nave, R. Lowe
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A Survey on Modulation Techniques in Molecular Communication via Diffusion

IEEE Communications Surveys and Tutorials, 2021
Mehmet ŞüKrü Kuran, Andrea Goldsmith, H Birkan Yilmaz   +2 more
exaly