Multi-rate filters change the sampling rate of a signal—they convert the input samples of a signal to a different set of data that represents the same signal sampled at a different rate. Decimation: A decimation filter provides a single output result for every M input samples, where M is the decimation ratio. The output rate is 1/M’th of the input rate. The filter implementation exploits the low output sample rate by not starting a computation until a new set of M input samples is available. Interpolation: An interpolator filter provides L output results for each new input sample, where L is the interpolation ratio. Note that the output rate is L times the input rate. Attached example demonstrates how to use FIR Accelerator Driver in Legacy Mode. One FIR task is created with two channels. First channel has taps/window of 256/1024 with Interpolation sampling. Second channel have taps/window of 1024/128 with Decimation sampling. The Outputs obtained are compared with the MATLAB generated output .dat files : - decimatedoutput128.dat, expectedinterpoutput2048.dat FIR_Inter_Deci_21569.zip