Patent ID: 6983012
Filing Date: 2006-01-03
Classification: H03H

Abstract:
1. A method of digital filtering of a digitized input stream in accordance with a predetermined filter function approximating a sum of products of a series of one or more first coefficient values and a series of one or more delayed samples from a digital output stream added together with a sum of products of a series of one or more second coefficient values and a series comprising one or more samples from the digital input stream, the digital filtering method comprising the steps of: combining predetermined sets of one or more samples from the digital input stream and one or more samples from the digital output stream, to form a plurality of respective numeric input values; scaling each of the plurality of respective numeric input values by a different power of a base numeric value for the digital filtering, to form a respective one of a plurality of scaled values; and adding the scaled values together to form the digital output stream in accordance with the predetermined filter function.