previous frequency-division multiplexing schemes. In 1973, adaptive differential pulse-code modulation (ADPCM) was developed, by P. Cummiskey, Nikil Jayant...
34 KB (4,095 words) - 19:12, 29 April 2025
Adaptive differential pulse-code modulation (ADPCM) is a variant of differential pulse-code modulation (DPCM) that varies the size of the quantization...
5 KB (658 words) - 07:46, 2 March 2025
Differential pulse-code modulation (DPCM) is a signal encoder that uses the baseline of pulse-code modulation (PCM) but adds some functionalities based...
3 KB (357 words) - 23:53, 5 December 2024
of differential pulse-code modulation (DPCM) where the difference between successive samples is encoded into n-bit data streams. In delta modulation, the...
18 KB (2,210 words) - 15:06, 17 March 2025
Pulse-position modulation (PPM) Analog-over-digital methods Pulse-code modulation (PCM) Differential PCM (DPCM) Adaptive DPCM (ADPCM) Delta modulation (DM or...
24 KB (3,051 words) - 14:49, 25 March 2025
Vocoder (redirect from Voice coder)
Terminal FNBDT, NSA's 21st century secure telephone. Adaptive Differential Pulse Code Modulation (ADPCM), former ITU-T G.721, 32 kbit/s used in STE secure...
34 KB (3,526 words) - 23:40, 18 April 2025
Audio (CDDA). In 1950, Bell Labs filed the patent on differential pulse-code modulation (DPCM). Adaptive DPCM (ADPCM) was introduced by P. Cummiskey, Nikil...
20 KB (1,822 words) - 09:03, 27 December 2024
III), for example. Sub-band coding is used in the G.722 codec which uses sub-band adaptive differential pulse code modulation (SB-ADPCM) within a bit rate...
5 KB (721 words) - 16:10, 1 March 2025
popular early variant of pulse-code modulation ("PCM") was a compressed version called adaptive differential pulse-code modulation ("ADPCM"). Sound module...
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supporting 8 channels of FM synthesis and one channel of adaptive differential pulse-code modulation audio, which are mixed down to 2 analog stereo channels...
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List of codecs (redirect from List of video coding formats)
WavTokenizer Adaptive differential pulse-code modulation (ADPCM, also called adaptive delta pulse-code modulation) Adaptive Transform Acoustic Coding (ATRAC...
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Computer Engineering. He is known for co-developing adaptive differential pulse-code modulation (ADPCM) with P. Cummiskey and Nikil Jayant at Bell Labs...
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Lossy compression (section Transform coding)
low delay, and high quality speech and general audio.) Adaptive differential pulse-code modulation (ADPCM) Master Quality Authenticated (MQA) MPEG-1 Audio...
26 KB (3,269 words) - 04:45, 2 January 2025
SBC (codec) (redirect from Low Complexity Subband Coding)
Bluetooth stack. Audio codec aptX Bluetooth profile Adaptive differential pulse-code modulation List of codecs Bluetooth SIG, Specification of the Bluetooth...
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providing voice quality covering 300 Hz to 3400 Hz using Adaptive Differential Pulse Code Modulation (ADPCM) to 24 and 40 kbit/s for digital circuit multiplication...
3 KB (213 words) - 22:02, 25 April 2024
look-ahead delay G.726 is a waveform speech coder which uses Adaptive Differential Pulse Code Modulation (ADPCM) PSQM testing under ideal conditions yields...
8 KB (1,085 words) - 00:15, 1 July 2024
wave tone/noise channels: compatible with YM2149 Seven adaptive differential pulse-code modulation (PCM) channels: ADPCM-A: Six ADPCM channels, fixed pitch...
3 KB (268 words) - 12:16, 7 April 2025
for voice, not high fidelity. Similar to other ADPCM (Adaptive Differential Pulse Code Modulation) formats, Dialogic ADPCM compresses audio data into a...
3 KB (413 words) - 04:06, 14 August 2024
Digital audio (section Coding)
of Bell Labs filed the patent on differential pulse-code modulation (DPCM), a data compression algorithm. Adaptive DPCM (ADPCM) was introduced by P....
24 KB (2,810 words) - 16:50, 6 March 2025
Dr. Nikil Jayant is an Indian-American engineer. He obtained his PhD in Electrical Communication engineering from the Indian Institute of Science in Bangalore...
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jazz, classical and traditional Japanese music. 1973: Adaptive differential pulse-code modulation (ADPCM) developed by P. Cummiskey, Nikil Jayant and James...
34 KB (3,974 words) - 17:04, 27 March 2025
for VoIP and videoconferencing Adaptive differential pulse-code modulation (ADPCM) G.722 for VoIP Neural speech coding Lyra (Google): V1 uses neural network...
16 KB (1,760 words) - 22:11, 17 December 2024
The bit layout of the audio data (excluding metadata) is called the audio coding format and can be uncompressed, or compressed to reduce the file size, often...
17 KB (913 words) - 19:28, 17 April 2025
DTS is related to the aptX audio coding format, and it is based on the adaptive differential pulse-code modulation (ADPCM) audio data compression algorithm...
46 KB (5,636 words) - 15:14, 28 April 2025
audio devices. NICAM sampling more closely resembles Adaptive Differential Pulse Code Modulation, or A-law companding with an extended, rapidly modifiable...
21 KB (2,642 words) - 07:09, 12 April 2025
Major developments in digital audio coding and audio data compression include differential pulse-code modulation (DPCM) by C. Chapin Cutler at Bell Labs...
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Orthogonal frequency-division multiplexing (redirect from Coded orthogonal frequency division modulation)
based on a PHY layer that specifies OFDM with adaptive modulation and a Low-Density Parity-Check (LDPC) FEC code. OFDM is extensively used in wireless LAN...
88 KB (11,274 words) - 02:38, 9 March 2025
Synthetic-aperture radar (redirect from Differential interferometry)
successive pulses of radio waves are transmitted to "illuminate" a target scene, and the echo of each pulse is received and recorded. The pulses are transmitted...
79 KB (11,256 words) - 01:33, 26 April 2025
therefore analog-to-digital converters are needed to create the pulse-code modulation (PCM) data streams that go onto compact discs and digital music...
48 KB (5,976 words) - 20:33, 12 February 2025
linear-frequency-modulation waveform. There are other means to modulate the signal. Phase modulation is a commonly used technique; in this case, the pulse is divided...
31 KB (5,513 words) - 19:41, 27 November 2024