Patent ID: 7280878
Filing Date: 2007-10-09
Classification: H03H,H04L

Abstract:
1. A computer-readable storage medium embodying computer executable instructions for converting an input signal at an input sample rate to one of a plurality of differing intended output sample rates, the instructions comprising: code for receiving a plurality of data points, associated with the input signal, at the input sample rate; code for operating on said plurality of data points to associate said input signal with a predetermined set of parameters, with said set of parameters including a first transition band having a first width; for said plurality of data points, code for controllably converting said input sample rate to any one of said plurality of differing output sample rates for any output data sample in response to a variation in an intended rational sample rate conversion ratio by converting said input sample rate associated with said signal to any one of the plurality of differing intended output sample rates by interpolating a subset of data points of said plurality of data points with an interpolator implementing an interpolation equation and having associated therewith a second transition band, with the width associated with said second transition band being a function of a spectral separation of said first transition band and said image; and code for producing an output signal having a sequence of data samples approximating the input signal.