Originally i asked this question on DSP SE yesterday but untill now couldn't get even a single comment so I am reproducing my question here as bigger audience is available here and also my question is also related to other subjects of EE such as circuit analysis and electronics
While studying the topic of filter design, I came across the following terms:
SOS (second order sections) form
Transfer function form
What is the difference between all these terms?
According to my understanding, the first two terms are mutually synonymous and are implemented in the same way in MATLAB, and the last two terms are also mutually synonymous and are implemented in same way in MATLAB.
Is my understanding valid?