I talked about the digital-switching infrastructure called pulse code modulation (PCM), which was rolled out starting in the 1960s. But there’s another factor I didn’t discuss: Digital ...

The technical characteristics of the CD reflect the state of the technology at the time it was developed. The audio data on the CD is in the form of PCM, or pulse code modulation. In PCM, the ...

claims it has invented a new modulation technology that “will help alleviate the global ... response signal generated by passing a first signal through a partial response pulse shaping filter. The ...

The invention of a pulse code modulation scheme for electric vehicle control has won the researchers a patent from the Union government. THIRUVANANTHAPURAM: In a major invention that could pave ...