Interpolation filter selection circuit for sample rate conversion using phase quantization

DETAILED DESCRIPTION The present invention is embodied in a filter selector for generating a filter address value to select one of a number of frequency characteristics to resample first data in a first segment of data to generate second sampled data in a second segment of data.
The filter selector includes a first adder for adding a resampling factor to a previous address value to generate a current address value if the previous address value is less than a comparator value and a second adder for subtracting the comparator value from the previous address value to generate the current address value if the previous address value is greater than or equal to the comparator value.
The current address value is shifted by n bits, where n is an integer, to generate the filter address value.