Assignment 3

DIGITAL FILTERS

1 .  Circular buffers are implemented in software by actually shifting the values in the 

      buffer locations circularly. (T/F)

2 .  With 4/8/16 khz i/p signal how much time do you have to process a sample?

3 .  Enumerate steps in setting up a circular buffer.

4 .   Window method is an optimal filter design technique. (T/F)

5 .   The REMEZ Algorithm uses an Analog to Digital Transformation to design digital filters . (T/F)

6 .   What is the delay in a  causal FIR filter of N points.

7 .   How can we compensate for the delay in  Q 6. in a areal-time application.

8 .  Explain the purpose of .cprog and .reg assembler directives in TMSC6701 assembly language.  

9 .   When implementing an FIR filter in TMSC6701 assembly, why is it necessary to compute the first product before performing the remaining N-1 products 

       using a parallel instruction?

10 .  How is an i/p sample stored in x circ[] made available to the assembly function convol.ASM in a mixed implementation of the FIR filter.

11 .  Draw an implementation of an IIR filter using FIR structures.

12 .  Does the IIR filter designed by IIR.EXE  always represent a stable filter.

13 .  Use benchmarking to find out the time taken to process a sample in a 
      a) C 
      b) Assembly
      c) mixed
      implementation.


14 .  Increase the order of your filter.
        What happens to the time to process a sample.

15 .  What do you notice about the order of the FIR and IIR filters required to filter a given data.