Chapter 21. Fast, Practical Filter Design for Beginners
The previous chapter presented a rigorous theoretical approach to filter design. Many designers prefer this method because it gives the most flexibility in filter design. Years of customer support, however, have revealed that the vast majority of designers want a working filter with the minimum effort and development time. This chapter presents a pragmatic, simple design methodology that allows a designer to implement all but the most complex filters rapidly and have a reasonable expectation that they will be producible.
To design a filter, these things must be known in advance:
• The frequencies that need to be passed and those that need to be rejected.
• A transition frequency, ...