dsd
DSD is an acronym with several meanings across different fields. The most widely recognized in audio technology is Direct Stream Digital, a high-resolution audio encoding developed by Sony and Philips for Sony’s Super Audio CD format. DSD encodes audio as a one-bit delta-sigma modulated signal at a sampling rate of 2.8224 MHz (64× 44.1 kHz). In practice this yields a continuous-time stream rather than a standard PCM sample sequence. DSD data is often packaged in files with extensions such as .dsf or .dff, and it requires a DAC that can process delta-sigma encoded data. Some players perform PCM conversion or noise shaping when necessary. Proponents argue that DSD preserves certain musical transients and sonic characteristics, while critics note that mastering, editing, and archival workflows can be more complex than for PCM.
In medicine, Disorder of Sex Development, abbreviated DSD, refers to congenital conditions in which chromosomal, gonadal,