multi-stage iir filter and parallelized data filtering with the same

摘要

patent summary: "multistage iir filter and parallelized data filtering therewith". in some embodiments, a multistage filter whose bikad filter stages are combined with interstage latency, a system (e.g., an audio encoder or decoder) including such filter, and methods for multistage bikad filtering. In typical embodiments, all BADB filter stages of the filter operate independently to perform fully parallel data processing. In some embodiments, the inventive multistage filter includes a storage memory, at least two stages of BADD filter, and a controller coupled and configured to determine a unique sequence of instructions for the filter stages. typically, the multistage filter is configured to perform multistage filtering of an input sample block on a single processing circuit with interaction through a sample index but no interaction through a bikadratic filter stage index .