Infinite Impulse Response


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Infinite Impulse Response

(electronics, DSP)
A type of digital signal filter, in which every sample of output is the weighted sum of past and current samples of input, using all past samples, but the weights of past samples are an inverse function of the sample age, approaching zero for old samples.
References in periodicals archive ?
The topics include digital signal processing (DSP) fundamentals and implementation considerations, the design and implementation of finite impulse response (FIR) and infinite impulse response (IIR) filters, frequency analysis and the discrete Fourier transform, adaptive echo cancellation, speech signal processing, and digital image processing.
Thus, a simple short-tap infinite impulse response (IIR) LPF can be used as the NB-LPF in the proposed estimator.
He thus includes numerical problems highlighting fundamental concepts, as well as problems using functions from MATLAB and Signal Processing Toolbox, in his each of his chapters covering time-domain analysis and z transform, frequency- domain analysis, infinite impulse response filters, finite impulse response filters, filter realizations, quantized filter analysis, and hardware design using digital signal processor chips.
Such a filter allows the neuron to act like an infinite impulse response filter, and the neuron processes past values of its own activity and input signals.
These implementations are referred to as infinite impulse response (IIR) filters.

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