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pulse density modulation

   Also found in: Wikipedia 0.01 sec.

pulse density modulation

See PDM.



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While most Class-D amplifiers use some variation of pulse-width modulation (PWM), ADI's Class-D amplifiers use a sigma-delta pulse density modulation (PDM) to reduce the amplitude of spectral components at high-frequencies, thus significantly minimizing EMI emissions.
Analog Devices Introduces Class-D Audio Amplifiers for Portable ... by Business Wire
SACD playback is optimized in the DVP-S9000ES with a number of proprietary technologies that minimize distortion, including an advanced DSD decoder LSI and an Accurate Complement Pulse Density Modulation System.
Sony Raises Curtain On 'Reference Standard' Performance With New ... by Business Wire
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