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Fast implementation of 16-bit FIR filters for AltiVec architecture

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A finite impulse response filter is nothing more than an operation of digital convolution of two vectors, one of them is a vector of input samples, the second one is a vector of filter coefficients. The digital convolution is not only the base of FIR filters, it can be found in many DSP algorithms, like more advanced filters and transforms. Accelerating this basic operation with a SIMD unit [...]

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