density modulation

density modulation

[′den·səd·ē ‚mäj·ə′lā·shən]
(electronics)
Modulation of an electron beam by making the density of the electrons in the beam vary with time.
References in periodicals archive ?
The AD242x devices include an improved pulse density modulation block that is critical for next-generation microphone connectivity applications.
Other modem functions implemented as Virtual Peripheral software modules include D/A conversion using Pulse Density Modulation, low-pass and high-pass digital filtering, DTMF generation and detection, Caller-ID and Call-Progress.