• Sukhchain Singh
• Er. Mandeep Kaur
• Er.Dipiti Bansal

Digital filters play an important role in digital communication. it is a basic building block in any digital signal processing (DSP) system. Digital filter is a system that uses the discrete time signal as input and produced a discrete time output signal to achieve a filter objective. In the last decades, so many optimization techniques are developed for the designing of the digital filter. These techniques give better magnitude response and phase response of the filter. in this review paper, we analyzed the various optimization methods and approaches such as particle swarm optimization(PSO) and gravitational search algorithm (GSA) for optimal digital filter design.

Digital filter, PSO ,GSA ,optimization

"Review Paper of Design of Digital Filter using Particle Swarm Optimization", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.228-230, July-2018, Available :http://www.jetir.org/papers/JETIR1807384.pdf

"Review Paper of Design of Digital Filter using Particle Swarm Optimization", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp228-230, July-2018, Available at : http://www.jetir.org/papers/JETIR1807384.pdf