Skip to main content

IIR Filter design

Lots of time was spent in designing a High Pass IIR Filter using IIM, but in the end we realized that it was not possible. This was because of the many-to-one mapping of frequencies when using IIM method of filter design.

Comments

  1. Unknown15 May 2018 at 21:15

    very cool

    ReplyDelete
  2. Unknown15 May 2018 at 22:37


    IIR filters are the most efficient type of filter to implement in DSP.

    ReplyDelete
  3. aniketwebslider15 May 2018 at 22:51


    Why is MATLAB used for this?

    ReplyDelete
  4. Unknown15 May 2018 at 23:26

    Bilinear Transform is preffered over IIM for designing High pass filters and Band-stop filters. Moreover, it has one to one mapping and no aliasing effect as in IIM.

    ReplyDelete
  5. Unknown16 May 2018 at 08:12

    Because of the feedback necessary in an implementation, the Infinite Impulse Response (IIR) Filter is also called a recursive Filter.

    ReplyDelete
  6. Srijal16 May 2018 at 09:05

    Since we had to plot the magnitude spectrums, MATLAB is a better choice as it has inbuilt plotting functions.

    ReplyDelete
  7. Unknown16 May 2018 at 10:17

    IIM is also not suitable for Band Pass Filter design because of the same reason.

    ReplyDelete

Post a Comment

Popular posts from this blog

FIR Filter Design

This was a relatively easy assignment as the MATLAB function fir1() directly generates the required filter based on the given specifications. The only task was to decide the appropriate window function based on the given stop band attenuation, as taught in the lecture.
4 comments
Read more

Fast Fourier Transform (DITFFT)

Using structures for performing operations on complex numbers made programming this experiment relatively simpler. I have used recursion in the FFT function which makes it functional for any radix-2 value of N, unlike the example codes provided, which had separate functions for different values of N. Because of this, the input signal of any length has to be first converted into a radix-2 form by appending the necessary amount of 0's and then calculating FFT. IFFT simply uses FFT for its calculation.
5 comments
Read more

Operations on DSP Processor

This experiment refreshed the concepts learnt during the Embedded systems course that I had attended during my first year. I had to demonstrate the practical to my batchmates and we executed assembly instructions on the DSP Processor kit available at the laboratory.
6 comments
Read more