In order to make speed and flexibility maximum in the system and the mannered null sample rate converter which implement the sample rate

摘要

The system and the method of converting to the sample rate where 2nd locks the digital input data stream from 1st sample rate making use of the combination of the hardware and the software part. With one execution example, as for the system, in order to estimate the sample rate of the input data stream, in order to select the phase for interpolation of multistage filter factor set the rate estimator which is formed and, this on the basis of the sample rate which was estimated, in order the aforementioned filter factor to interpolate the phase selective unit which is formed and, this on the basis of the phase which is selected, with in order factor intaporeta which is formed and the sample of the aforementioned input data stream being superimposed, to form the sample of the output data stream which is sampled for the second time in the filter factor which interpolates, the being superimposed unit which is formed it has. One or the hardware part and the software part above that becoming independent, it is shared in plural channel to channel it is possible to process the data stream which possesses the sample rate which is variable.