modulation theory इन हिंदी

modulation: उतार-चढ़ाव लय ठीक

theory: वाद विद्या

	1.	He also worked on pulse code modulation and wrote a book on " Modulation Theory " ( Van Nostrand, 1953 ).
	2.	While working at MIT during 1968-1971, Van Trees published a three-volume series of textbooks on the detection, estimation, and modulation theory.

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