Device and method for conversion of sampling rate

A device for converting an input digital signal sequence (Sin) with an input sampling rate (fin) into an output digital signal sequence (Sout) with an output sampling rate (fout), comprising:

• an estimator which estimates a sampling rate ratio (Rk) between the input sampling rate (fin) and the output sampling rate (fout) and estimates a set point phase (Φset,k) of the output signal sequence (Sout) in observation intervals being variable in observation length;
• a controlling system which is connected to the estimator and compares an actual phase (Φactual,k) of the output signal sequence (Sout) with the set point phase (Φset,k) of the output signal sequence (Sout) and generates a control signal (RTC,k) as a function of the estimated sampling rate ratio (Rk) and a deviation (ΔΦk) of the actual phase (Φactual,k) from the set point phase (Φset,k);
• and
• an interpolator which interpolates the input signal sequence (Sin) for generating the output signal sequence (Sout) at sampling times (t′1, t′2, . . . , t′6), the sampling times (t′1, t′2, . . . , t′6) having a position in time being predetermined by the control signal (RTC,k).