The .000001% of use cases for a simple passive VGA to HDMI is for when the video source is designed especially to output both VGA and HDMI. In these cases the cable will accompany the video source when you buy it. This is so rare, I almost regret writing this much about it. Analog vs Digital.
Definition - What does Pulse Width Modulation (PWM) mean? Pulse-width modulation (PWM) is a modulation process or technique used in most communication systems for encoding the amplitude of a signal right into a pulse width or duration of another signal, usually a carrier signal, for transmission.
PDM stands for pulse density modulation. However, it is really better summarized as âoversampled 1-bit. audioâ, as it is nothing more than a high sampling rate, single-bit digital system. If one increased the. sample rate of audio CDs by a large factor, and reduced the wordlength from 16 bits to 1 in a reasonable. way, that would serve as the basis of a PDM system. Most current digital audio systems use multi-bit PCM (pulse code modulation) to represent the signal.