The full form of DSP is Digital signal processing

Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations. The digital signals processed in this manner are a sequence of numbers that represent samples of a continuous variable in a domain such as time, space, or frequency. In digital electronics, a digital signal is represented as a pulse train,^[1][2] which is typically generated by the switching of a transistor.^[3]

Digital signal processing and analog signal processing are subfields of signal processing. DSP applications include audio and speech processing, sonar, radar and other sensor array processing, spectral density estimation, statistical signal processing, digital image processing, data compression, video coding, audio coding, image compression, signal processing for telecommunications, control systems, biomedical engineering, and seismology, among others.

DSP can involve linear or nonlinear operations. Nonlinear signal processing is closely related to nonlinear system identification^[4] and can be implemented in the time, frequency, and spatio-temporal domains.

The application of digital computation to signal processing allows for many advantages over analog processing in many applications, such as error detection and correction in transmission as well as data compression.^[5] Digital signal processing is also fundamental to digital technology, such as digital telecommunication and wireless communications.^[6] DSP is applicable to both streaming data and static (stored) data.

The full form of DSP is demand-side platform

A demand-side platform is software used by advertisers to buy mobile, search, and video ads from a marketplace on which publishers list advertising inventory. These platforms allow for the management of advertising across many real-time bidding networks, as opposed to just one, like Google Ads. Together with supply-side platforms, DSPs enable programmatic advertising.