Chapter 12

Finite Impulse Response Filters Systems with Memory: Spectral Processors (Part 1)

12.1 Introduction: Spectral Processors

This chapter introduces the use of time delays in systems to create spectral processors. These audio effects include various types of filters for equalizers. In Chapter 11, relatively long time delays were used to create audible echo effects. Here, relatively short time delays are used to create spectral processors.

Spectral processors change the characteristics of a signal in a frequency-dependent manner. In other words, one frequency is changed differently than another frequency. Spectral processors are described based on how the amplitude of a signal is changed in a frequency dependent manner. Examples of spectral ...

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