DSPP lab 4.

This experiment was based on the overlap add and the overlap save method .We had taken a 13 point sequence for the overlap save method with the length of h(n) as 4.The value of L was taken as 5 and according to the formula (L+M-1) we got N=8.So the signal had to be divided into three parts of 8 blocks each.It had to be appended with a few zeroes for doing so.In the end the convolution of each of the decomposed part was fkund separately and then combined.
In Overlap add method we did the same thing but in a different manner.All the signals taken were same.Just that now instead of 3,4 decompositions were made and in the end the last three columns were neglected.

Comments

  1. OAM and OSM are used for calculating large number of input signal.

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  2. But OSM and OAM is restricted for only FIR

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  3. Computationally both the methods are equally useful and selection depends on the application

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  4. OAM uses linear convolution while OSM uses circular convolution to compute the output.

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  5. These techniques are used for long input signal processing

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  6. In OSM, aliasing effect is present but is absent for OAM.

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  7. We use OAM and OSM as FFT is not suitable to process real time signal.

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