A method of interpolation of sample data using multiple channels
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1962
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Abstract
This work develops a design procedure to use for multiple channel interpolation of sample data. Signals that can be assumed to be both time and frequency limited are considered. The interpolation scheme is most practical when a signal cannot be sampled at its Nyquist rate. In the scheme a set of prefilters is excited by an input signal. The responses of the prefilters are all sampled at the same time and stored. By using these sample values the input signal may be reconstructed later. The scheme is further simplified by using RC filters as prefilters. A method of selecting the bandwidths of the RC filters is given and application of the design procedure is illustrated for a transducer response.