Adaptive Differential Code Modulation DefinitionComputer Pages: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z ADPCMA is a technique of translating analog sound into digital format that takes less computer memory than the regular pulse code modulation used by audio CDs.It is used on the Sony minidisk, and for CD-ROMs which have images and other data as well as sound. ADPCM takes rapid samples of sound and translates them into binary code, but instead of coding an absolute measurement at every sample point, it codes the difference between samples. Digitization as Part of the PCM ProcessIn conventional PCM, the analog signal may be processed (e.g. by amplitude compression) before being digitized. Once the signal is digitized, the PCM signal is usually subjected to further processing (e.g. digital data compression).Some forms of PCM combine signal processing with coding. Older versions of these systems applied the processing in the analog domain as part of the A/D process, newer implementations do so in the digital domain. These simple techniques have been largely rendered obsolete by modern transform-based audio compression techniques.
Where circuit costs are high and loss of voice quality is acceptable, it sometimes makes sense to compress the voice signal even further. An ADPCM algorithm is used to map a series of 8 bit PCM samples into a series of 4 bit ADPCM samples. In this way, the capacity of the line is doubled. The technique is detailed in the G.726 standard. Later it was found that even further compression was possible and additional standards were published. Some of these international standards describe systems and ideas which are covered by privately owned patents and thus use of these standards requires payments to the patent holders. Some ADPCM techniques are used in Voice over IP communications. No matter if you need to know "what is Adaptive Differential Code Modulation", the definition of a "Adaptive Differential Code Modulation", or the meaning of a "Adaptive Differential Code Modulation", you can find it here at Network Liquidators. There's quite a bit of information out there to learn, and it all starts by you having the initiative to seek out that information. We hope this definition of Adaptive Differential Code Modulation was what you were looking for and appreciate your visit and welcome you back anytime. Check Our our Network Equipment InventoryComputer Pages: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
