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.
Unlike infinite impulse response (IIR) filters, FIR filters are formed with only the equivalent of zeros in the linear domain.
Software engineers at Microstar Laboratories have used a compiler-provided IDE to develop a new application that gives users a simple means to specify onboard Infinite Impulse Response (IIR) filters that run in real time and continuously filter the sampled data stream.
Truncating this infinite impulse response after a certain time duration results in undesirable ripples (known as Gibb's ripples) in the passband and stopband.
If the output of the filter never reaches zero, the filter is termed an infinite impulse response (IIR) filter.
By intelligently detecting the amount of resources available, PureSound can adaptively compensate for and correct any two-speaker audio system's frequency response curve by applying an appropriate mix of Finite Impulse Response (FIR) and Infinite Impulse Response (IIR) filters to deliver a superior audio performance, making SRS PureSound the smartest automated OEM tuning tool that SRS has ever developed.

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