Digital Audio Signal Processing: IIR Filters - Tapa blanda

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Infinite impulse response (IIR) filters have the advantage that they can usually be implemented with fewer coefficients than FIR filters. We use the fundamental concepts of linear systems theory to explore two classic second-order IIR filters: the pole-zero notch and the all-pass. This book reflects a teaching paradigm called layering in which a concept is developed one step at a time by making gradual progressions from the simple to the complex. Rather than starting with a presentation of the final destination and then attempting to explain and justify its meaning, a concept is allowed to evolve with figures and equations by intentionally repeating material so that an incremental change becomes obvious. It is the intentional rewriting rather than erasing and writing that is at the core of layering. An additional benefit to this approach is that blocks in learning may be identified and clarified more easily