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Infinite Impulse Response

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(electronics, DSP)Infinite Impulse Response - 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.
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It has a simple user interface, and includes common DSP functions such as Finite Impulse Response (FIR), Infinite Impulse Response (IIR) filter operations and transform operations.
Microchip Technology's Software Libraries for the dsPIC Digital ... by Business Wire
The two classes of digital filters are infinite impulse response (IIR) and finite impulse response (FIR).
Altera's New IP Cores Expand Leadership in DSP Market by Business Wire
The first, the DSP56007EVM, includes general-purpose audio software, such as finite impulse response filters (FIRs), infinite impulse response filters (IIRs) and fast Fourier transforms (FFTs), in the DSP56007 ROM.
Motorola Pumps Its DSP56004 Up To 66 MHz; Motorola Introduces ... by Business Wire
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