Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Differential_pulse-code_modulation> ?p ?o. }
Showing items 1 to 31 of
31
with 100 items per page.
- Differential_pulse-code_modulation abstract "Differential pulse-code modulation (DPCM) is a signal encoder that uses the baseline of pulse-code modulation (PCM) but adds some functionalities based on the prediction of the samples of the signal. The input can be an analog signal or a digital signal.If the input is a continuous-time analog signal, it needs to be sampled first so that a discrete-time signal is the input to the DPCM encoder. Option 1: take the values of two consecutive samples; if they are analog samples, quantize them; calculate the difference between the first one and the next; the output is the difference, and it can be further entropy coded. Option 2: instead of taking a difference relative to a previous input sample, take the difference relative to the output of a local model of the decoder process; in this option, the difference can be quantized, which allows a good way to incorporate a controlled loss in the encoding.Applying one of these two processes, short-term redundancy (positive correlation of nearby values) of the signal is eliminated; compression ratios on the order of 2 to 4 can be achieved if differences are subsequently entropy coded, because the entropy of the difference signal is much smaller than that of the original discrete signal treated as independent samples.DPCM was invented by C. Chapin Cutler at Bell Labs in 1950; his patent includes both methods.".
- Differential_pulse-code_modulation thumbnail Cutler_DPCM_patent.png?width=300.
- Differential_pulse-code_modulation wikiPageID "1093399".
- Differential_pulse-code_modulation wikiPageRevisionID "564560412".
- Differential_pulse-code_modulation hasPhotoCollection Differential_pulse-code_modulation.
- Differential_pulse-code_modulation subject Category:Telephony_signals.
- Differential_pulse-code_modulation type Abstraction100002137.
- Differential_pulse-code_modulation type Communication100033020.
- Differential_pulse-code_modulation type Signal106791372.
- Differential_pulse-code_modulation type TelephonySignals.
- Differential_pulse-code_modulation comment "Differential pulse-code modulation (DPCM) is a signal encoder that uses the baseline of pulse-code modulation (PCM) but adds some functionalities based on the prediction of the samples of the signal. The input can be an analog signal or a digital signal.If the input is a continuous-time analog signal, it needs to be sampled first so that a discrete-time signal is the input to the DPCM encoder.".
- Differential_pulse-code_modulation label "DPCM".
- Differential_pulse-code_modulation label "DPCM".
- Differential_pulse-code_modulation label "DPCM".
- Differential_pulse-code_modulation label "Differential Pulse Code Modulation".
- Differential_pulse-code_modulation label "Differential pulse-code modulation".
- Differential_pulse-code_modulation label "Дифференциальная импульсно-кодовая модуляция".
- Differential_pulse-code_modulation label "差分パルス符号変調".
- Differential_pulse-code_modulation sameAs Differential_Pulse_Code_Modulation.
- Differential_pulse-code_modulation sameAs DPCM.
- Differential_pulse-code_modulation sameAs DPCM.
- Differential_pulse-code_modulation sameAs 差分パルス符号変調.
- Differential_pulse-code_modulation sameAs DPCM.
- Differential_pulse-code_modulation sameAs DPCM.
- Differential_pulse-code_modulation sameAs m.057xm_q.
- Differential_pulse-code_modulation sameAs Q1224367.
- Differential_pulse-code_modulation sameAs Q1224367.
- Differential_pulse-code_modulation sameAs Differential_pulse-code_modulation.
- Differential_pulse-code_modulation wasDerivedFrom Differential_pulse-code_modulation?oldid=564560412.
- Differential_pulse-code_modulation depiction Cutler_DPCM_patent.png.
- Differential_pulse-code_modulation isPrimaryTopicOf Differential_pulse-code_modulation.
