B.Tech Subjects Training Tuitions

Digital Signal Processing is a very crucial subject taught by B.Tech tuition Institutes in Delhi. There are lots of tricks required to crack this examination. Following points are given to prepare to get good marks in the subjects

There are many B.Tech tuition Institutes in Delhi giving coaching for DSP but Tejas Engineers Academy provides you best tips online for cracking the DSP examination.

Discrete Fourier Transform: It is very important chapter covered in DSP course. FourierTrasnform is done to covert a signal from time domain to frequency domain. There are two types of Fourier Transform : Continuous time Fourier Transform and Discrete Time Fourier Transform. Continuous Time Fourier Transform (CTFT) is taken for continuous time signals, wherease Discrete time Fourier Transform(DTFT) is taken for discrete time signals. When We do frequency sampling of DTFT we get DFT (Discrete time Fourier Transform). Thus DFT is obtained by frequency sampling of DTFT. There are few B.Tech coaching institutes in Delhi giving tutorials for various types of Fourier Transform technique, one of such institute is Tejas Engineers Academy located in West Delhi.

Discrete Fourier Transform is used to covert a discrete time signal from time domain to discrete frequency domain. One of the advatage of DFT is that it gives a finite number of samples in frequency domain, which can be easily stored in memory. On the other hand DTFT give a continuous spectra which cannot be stored as samples. Disadvantage with DFT is that it requres a lot of additions and multiplications to compute the final result. There are about N² computations done to calculate DFT. There exists an efficient algorithm to compute DFT of a seuqnce this algorithm is known as Fast Fourier Transform (FFT). Thus Fast Fourier Transform is used to compute DFT of a sequence with less number of additions are multiplications. There are about Nlog₂N computations required to find FFT. Hence number of computations are reduced to find DFT using FFT. B.Tech tuition institutes in Delhi generally describes each and every details of types of FFT. There are two types of FFT techniques described by B.Tech tuition institues in Delhi,