Direct Form I

Direct Form I is a way of implementing digital filters in signal processing. It uses two main parts: one that processes the input signal directly (by combining current and past input values) and another that processes the past output signals. These parts are connected to produce a filtered version of the original signal. Essentially, it organizes calculations efficiently to achieve the desired filtering effect, making it a common and straightforward method in digital signal processing for tasks like audio filtering or data analysis.