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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, DoP, 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)
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References in periodicals archive ?
While ONGC and OIL could not monetise the discoveries auctioned in the DSF round mainly because they being financially unviable on prevalent fiscal terms, DSF round winners will get complete pricing and marketing freedom that will make the finds economically viable.
Extended for an additional week to give people even more reasons to shop, win and play, many of the popular events and promotions featured in previous years, such as 12 Hour Sale and Market Outside the Box (MOTB) will be returning even bigger and better, as well as exciting new additions to be revealed, DSF Weekend Surprises and Shop the Night Away.
Organised by the Dubai Festivals and Retail Establishment (DFRE), an agency of the Department of Tourism and Commerce Marketing (Dubai Tourism), DSF will kick off with innovative initiatives and memorable experiences built around the three pillars of the festival - shopping, winning and entertainment.
With the 24th edition of Dubai Shopping Festival (DSF) promising to provide unforgettable shopping experiences, the Dubai Festivals and Retail Establishment (DFRE), an agency of Dubai's Department of Tourism and Commerce Marketing (Dubai Tourism) announced that the DSF Mega Raffles promotions - the Infiniti Mega Raffle and the Nissan Grand Raffle - will begin on October 15, 2018.
DSF, which attracts shoppers from all over the world, will feature exciting events, promotions and opportunities for enjoyable shopping experiences, coupled with fun and entertainment for all families, said a press release.
Music-lovers will be in for a treat this final weekend of DSF with two concerts taking place on Friday 26 January.
Jumbo Electronics, the UAE-based omni-channel electronics retailer, is expecting to achieve similar sales figures as last year during this edition of the Dubai Shopping Festival (DSF).
The DSF Group purchased the asset free and clear of existing debt.
DSF, held at the start of the New Year, sets the tone for the entire year's sales.
11 February 2014 - Chicago US-based derivatives marketplace CME Group (NASDAQ: CME) said it will launch Euro-Denominated Deliverable Interest Rate Swap Futures (Euro DSF) contracts on April 14 2014 pending CFTC review.
Starting from January 05 and going on till February 05, DSF 2012 will be set on an unprecedented scale.
The DSF was intended to be, pretty much as the name suggests, a month long festival dedicated to the simple pursuit of shopping.