amplitude modulation

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amplitude modulation

Altering the height (amplitude) of an electrical or acoustical wave.
See: A-mode ultrasound
References in periodicals archive ?
PEREZ-ABALO, MC; SAVIO, G; TORRES, A; MARTIN, V; RODRIGUEZ, E & GALAN, L 2001: Steady state responses to multiple amplitude modulated tones: An optimised method to test frequency specific thresholds in hearing impaired children and normal subjects.
Extensive Time Code Generation and Translation - IRIG A, B, G, E, IEEE 1344, NASA 36, XR3 or 2137 in both amplitude modulated (AM) and DC level shift formats supported; over 30 input and output time code variations are supported with the ability to do them in parallel between AM and DCLS
Instead, data is transmitted using time and amplitude modulated pulses of less than one nanosecond in duration.
12, 1996--TV/COM, a wholly owned subsidiary of Hyundai Electronics, on Thursday announced at the International Broadcasting Conference in Amsterdam, that its Quadrature Amplitude Modulated (QAM) cable receiver provides 256 QAM throughput at the same cost as the standard 64 QAM implementation.

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