Howtosignalprocessing
- Why is implementing a parallel FIR filter necessary?
- How do I combine two FIR filters?
- What are advantages of cascade structure over direct structures in FIR filters?
- What is cascade form IIR filter?
Why is implementing a parallel FIR filter necessary?
Parallel processing is a powerful technique because it can be used to increase the throughput of a FIR filter or reduce the power consumption of a FIR filter. However, a traditional block filter implementation causes a linear increase in the hardware cost (area) by a factor of L, the block size.
How do I combine two FIR filters?
Adding the Outputs of two FIR Filters
An informative experiment is the following: Filter the signal with low-pass filter. Then filter the original signal with a special high-pass filter having the same cutoff frequency (called a complementary filter). Now when you add up the two results, you get original signal back!
What are advantages of cascade structure over direct structures in FIR filters?
The main advantage of the cascade structure is its smaller sensitivity to the coefficient quantization. We can use the tf2sos command to rewrite the system function of a FIR filter as the product of second-order sections; however, these second-order sections are not necessarily linear-phase.
What is cascade form IIR filter?
The following equation defines the direct-form transfer function of an IIR filter. A direct-form IIR filter is a filter implemented by directly using the structure defined by the previous equation after converting it to the following difference equation.
