.dss

.dss is a filename extension. It may refer to:

DSS

DSS can refer to:

Government and politics

DSS (NMR standard)

DSS (4,4-dimethyl-4-silapentane-1-sulfonic acid) is a chemical compound used in proton- and carbon-related NMR spectroscopy as a calibration standard, similar to tetramethylsilane (TMS), but with much higher water solubility. Whereas TMS is the most common NMR standard used in organic solvents such as chloroform or benzene, DSS or its sodium salt is more often used for protein experiments in water.

The low electronegativity of the silicon shields the nine identical methyl protons. The result is a high intensity proton signal further upfield (at lower chemical shift) than almost all peaks found in naturally occurring organic molecules. The resulting standard peak is easily identified as such and set to chemical shift 0.0.

The proton spectrum of DSS also exhibits minor peaks at 3.1 ppm (triplet), 1.9 ppm (pentet), and 0.8 ppm (triplet) at an intensity of 22% of the reference peak at 0 ppm. However, these peaks appear much smaller than 22% of the height of the reference singlet because of their width (i.e. multiplicity). If these peaks pose a problem, a deuterated version of DSS is available at much higher cost.

Goldstone Deep Space Communications Complex

The Goldstone Deep Space Communications Complex (GDSCC), commonly called the Goldstone Observatory, is located in the U.S. state of California's Mojave Desert. Operated for the Jet Propulsion Laboratory, its main purpose is to track and communicate with space missions. It is named after Goldstone, California, a nearby gold-mining ghost town.

The complex includes the Pioneer Deep Space Station, which is a U.S. National Historic Landmark. The current communications complex is one of three in the NASA Deep Space Network, the others being the Madrid Deep Space Communications Complex and the Canberra Deep Space Communication Complex.

Antennas

Goldstone antennas have also been used as sensitive radio telescopes for such scientific investigations as mapping quasars and other celestial radio sources; radar mapping planets, the Moon, comets and asteroids; spotting comets and asteroids with the potential to strike Earth; and the search for ultra-high energy neutrino interactions in the Moon by using large-aperture radio antennas.

Digital Subscriber System No. 2

Digital Subscriber Signalling System No. 2 (DSS2), as the successor to DSS1, is also a digital signalling protocol (D channel protocol) used for the B-ISDN.

Korg DSS-1

The Korg DSS-1 is a 12-bit polyphonic sampling synthesizer released in September 1986. It came out at a time when many of the popular synthesizer companies were beginning to get into sampling, an area of sound design that had previously been left to a handful of fledgling companies such as Fairlight, E-mu, and Ensoniq. Like Yamaha and Casio, however, Korg did not stay long in the sampling arena. The DSS-1 (along with the rackmount DSM-1) was the company's only sampler until 1998 when Korg introduced sampling options on their Triton and Trinity series of workstations, and on their Electribe series of drum-and-phrase samplers.

Concept and features

The DSS-1 is a 12-bit sampler with analog filters and envelopes. It can sample at 12 bit resolution, with a maximum sampling frequency of 48 kHz. The usual sample editing features are included, such as truncate, loop, crossfade, keymapping, and so on. Multisamples can contain up to 16 individual samples. A single floppy disk can hold 4 "systems", each of which stores 32 patches including all subtractive synthesis parameters and the multisamples used in those patches. The maximum internal sample memory is 256k on a factory standard unit, with some (now rare and hard-to-find) hardware upgrades that increased the memory up to 2MB. A single DSS-1 floppy disk can hold up to 512k worth of multisamples, but only a max of 256k can be loaded into the machine's internal memory.