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(Direct Stream Digital) The sampling technique used in Sony's high-resolution SACD music format. Although SACD discs never took off and new ones are few and far between, the DSD format is used to encode music for high-quality downloads. Increasingly, Blu-ray players and music servers can decode the format. Digital DSD files use DFF and DSF extensions, the latter holding meta-data.

From 44 Thousand to Millions of Samples
For standard CDs, music is digitized 44.1 thousand times per second, producing 16-bit PCM samples. In contrast, DSD uses pulse density modulation (PDM) to encode 2,822,400 1-bit samples per second (64 times the CD sampling rate). Each DSD sample is a 1 or 0 (either up or down from the previous sample). Compared to CDs, DSD boosts frequency response from 20 kHz to 100 kHz and dynamic range from 96 to 120 db. See PCM, PDM and CD.

Even Higher Sampling Rates
No longer confined to a physical disc, DSD resolutions have gone beyond SACD (see table below). The DSD's one-bit sampling generates a very low signal-to-noise ratio, and "noise shaping" shifts the noise to a high frequency that is filtered out before the final output. The advantage to higher sampling is that the noise is spread out over a wider frequency band, and the filtering can be relaxed. High-end DSD players offer multiple filtering modes to accommodate high-res DSD files. See SACD, DSD DAC, DXD, signal-to-noise ratio and high-resolution audio.
           MultiplesDSD          of CD        Number ofFormat      Samples  ---1-Bit Samples---

 (DSD64)        64    2,822,400 (2.8 MHz)

 (DSD128)      128    5,644,800 (5.6 MHz)

 (DSD256)      256   11,289,600 (11.2 MHz)

 (DSD512)      512   22,579,920 (22.5 MHz)
References in periodicals archive ?
Customers dining during DFF and spending a minimum of Dh50 will receive a raffle coupon that will entitle them to enter a lucky draw to win multiple prizes.
The 'One Million Arab Coders' is a landmark initiative to empower Arab youth and help them acquire the skills of the future," said Omar bin Sultan Al Olama, the UAE's Minister of State for Artificial Intelligence and deputy managing director of DFF.
Suggiyao, with the zone commanders of the Cordillera People's Liberation Army (CPLA), met with the DFF supreme council in Quezon City, and the two groups agreed that both organizations would support the Duterte administration's programs, especially relative to the federalism issue.
Summary: Gulf Insider was at the opening weekend of DFF last month which showcased a long lineup of events and activities, providing both residents and visitors numerous opportunities to discover why Dubai is a diner's delight.
DFF 2016 will build on the success of the first two editions that created citywide culinary excitement through a number of food-related activities offering unique experiences for food lovers, restaurants and chefs.
The women at DFF events drop wisecracks and feminist jabs throughout each screening.
It's nice because the DFF has a huge influence in the region" he says.
There is inference of predominant presence of non-additive type of gene action for all of the traits except DFF and HFFD.
DFF is celebrating its 28th anniversary on December 20, which is sure to signal another sales milestone for the airport retailer when it will be offering a 25% discount on a wide range of products to travellers on that day.
El cuarto grupo fue trasladado a un cobertizo con sombra neutra de baja DFF, y el ultimo a un ambiente de plena exposicion solar (sin cubrir).
Since logic circuits in almost all SoCs consist of clock synchronized circuits, when a DFF becomes nonvolatile, all logic circuits can become nonvolatile.