Editing Signal processing (section)

===Digital===
{{main|Digital signal processing}}

Digital signal processing is the processing of digitized discrete-time sampled signals. Processing is done by general-purpose [[computer]]s or by digital circuits such as [[ASIC]]s, [[field-programmable gate array]]s or specialized [[digital signal processor]]s. Typical arithmetical operations include [[Fixed-point arithmetic|fixed-point]] and [[floating-point]], real-valued and complex-valued, multiplication and addition. Other typical operations supported by the hardware are [[circular buffer]]s and [[lookup table]]s. Examples of algorithms are the [[fast Fourier transform]] (FFT), [[finite impulse response]] (FIR) filter, [[Infinite impulse response]] (IIR) filter, and [[adaptive filter]]s such as the [[Wiener filter|Wiener]] and [[Kalman filter]]s.