pulse-duration modulation

electronics

Also known as: PDM, pulse-width modulation

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July 13, 2026

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Pulse-duration modulation, also known as pulse length modulation, is a technique in electronics where information is impressed upon a carrier wave by varying its pulse duration. This is one of several ways to modulate a signal, with others including amplitude, frequency, and phase modulation. In pulse modulation, a series of on-off pulses acts as the carrier wave. Pulse-duration modulation specifically represents intelligence through the length and order of these regularly recurring pulses.123

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modulation
…frequency, phase, pulse sequence, and pulse duration.
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…frequency, phase, pulse sequence, and pulse duration.
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telemetry
Transmission.
…two types are pulse-width (or pulse-duration) modulation and pulse-position modulation. In the first, the information produces variations in the width (or duration) of the pulse; in the second, the variation is in the position of the pulse with respect to time. In the second main class, pulse-code modulation, the information…
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…two types are pulse-width (or pulse-duration) modulation and pulse-position modulation. In the first, the information produces variations in the width (or duration) of the pulse; in the second, the variation is in the position of the pulse with respect to time. In the second main class, pulse-code modulation, the information…
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