Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility

The system which changes a digital input data stream into the sample rate which the 2nd fixed from the 1st sample rate using the combination of hardware and a software part, and a method. The rate ST meter which consisted of one case of the operation so that a system might predict the sample rate of an input data stream, The phase selection unit constituted so that the phase for interpolation of a multi-stage filter factor set might be chosen based on this estimated sample rate, The coefficient interpolator constituted so that the above-mentioned filter factor might be interpolated based on this selected phase, It has the superposition unit constituted so that the sample of the output data stream which superimposed the sample of the above-mentioned input data stream on the interpolated filter factor, and was sampled again might be generated. 1, or the hardware parts and software part beyond it are shared in two or more channels which can process the data stream which has a sample rate which is variable independently.