Armenia Description. Armenia is a mountainous, landlocked country, on the southeastern edge of Europe, and at the gateway to the Middle East and Asia. This valuable geographical position for potential trade between continents became a curse of sorts.istorically Armenia and Azerbaijan have been long associated with Asia and the Middle East. In recent years some sources now consider them to be more closely aligned with Europe based on their modern economic and political trends. I.E.
Pulse-position modulation (PPM) is a form of signal modulation in which M message bits are encoded by transmitting a single pulse in one of possible required time-shifts. This is repeated every T seconds, such that the transmitted bit rate is bits per second.
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.