Patent ID: 8781259
Filing Date: 2014-07-15
Classification: G06T

Abstract:
1. A method of processing samples in a digital sample processor, the method comprising the steps of: receiving a stream of input samples at respective input sample positions; specifying output sample positions according to a specified temporal or spatial relationship between input sample positions and output sample positions; deriving values for new output samples at respective output sample positions from the values of said stream of input samples by summing weighted values of input samples situated within a filter aperture; wherein the weight applied to the value of each input sample depends on the phase of that input sample within the said filter aperture, and the relationship between the said input sample phase and the said weight is defined by a filter aperture function in which the value of the function is the said weight and the argument of the function is the said phase; and wherein the width of the said filter aperture is scaled according to either the input sampling frequency or the output sampling frequency so as to obtain the wider of the two possible filter apertures.