I have been trying to learn about the filter design tools avaialable in Matlab so that I can make an informed decision about which tools I need to use for particular applications. Unfortunately, I have not found a comprehensive explanation. Instead, I have learned that there appear to be tools in the Signal Processing Tollbox as well as the DSP System toolbox. Some of these tools are GUI-based, and others are functions, but many of them seem to have overlapping features. Both toolboxes appear to have unique data objects for storing filter designs, but I cannot find references to tools for converting between data types. Normally, I use the low-level functions like BUTTER to generate analog or digital filter designs and I will either store these as NUM & DEN arrays or as LTI objects. I also cannot find any reference for how I can convert either NUM,DEN or LTI object formats to any of the unique data objects in the digital filter design/analysis GUI’s. This is incredibly confusing and is not what I am used to with regard to traditional MathWorks documentation. Please direct me to a comprehensive reference on all of the digital filter design tools supported by MathWorks. I really hope that I don’t have to read all of the documentation for every tool just to figure out which one I need to use…I have been trying to learn about the filter design tools avaialable in Matlab so that I can make an informed decision about which tools I need to use for particular applications. Unfortunately, I have not found a comprehensive explanation. Instead, I have learned that there appear to be tools in the Signal Processing Tollbox as well as the DSP System toolbox. Some of these tools are GUI-based, and others are functions, but many of them seem to have overlapping features. Both toolboxes appear to have unique data objects for storing filter designs, but I cannot find references to tools for converting between data types. Normally, I use the low-level functions like BUTTER to generate analog or digital filter designs and I will either store these as NUM & DEN arrays or as LTI objects. I also cannot find any reference for how I can convert either NUM,DEN or LTI object formats to any of the unique data objects in the digital filter design/analysis GUI’s. This is incredibly confusing and is not what I am used to with regard to traditional MathWorks documentation. Please direct me to a comprehensive reference on all of the digital filter design tools supported by MathWorks. I really hope that I don’t have to read all of the documentation for every tool just to figure out which one I need to use… I have been trying to learn about the filter design tools avaialable in Matlab so that I can make an informed decision about which tools I need to use for particular applications. Unfortunately, I have not found a comprehensive explanation. Instead, I have learned that there appear to be tools in the Signal Processing Tollbox as well as the DSP System toolbox. Some of these tools are GUI-based, and others are functions, but many of them seem to have overlapping features. Both toolboxes appear to have unique data objects for storing filter designs, but I cannot find references to tools for converting between data types. Normally, I use the low-level functions like BUTTER to generate analog or digital filter designs and I will either store these as NUM & DEN arrays or as LTI objects. I also cannot find any reference for how I can convert either NUM,DEN or LTI object formats to any of the unique data objects in the digital filter design/analysis GUI’s. This is incredibly confusing and is not what I am used to with regard to traditional MathWorks documentation. Please direct me to a comprehensive reference on all of the digital filter design tools supported by MathWorks. I really hope that I don’t have to read all of the documentation for every tool just to figure out which one I need to use… filter design, digital filter MATLAB Answers — New Questions

​