1. Circuitry for calculating a starting value for a background noise estimator circuit, said circuitry comprising: a signal processing component for outputting a plurality of actual magnitudes representing a plurality of data point; a first mean-calculating component for calculating an actual first mean of the magnitudes from the signal processing component; a variance calculating component for calculating an actual variance of at least a portion of the magnitudes from the signal processing component; a peak detector for determining the actual peak magnitude value of the data points; a max value compare table component which compares the actual peak magnitude to a plurality of simulated peak magnitudes and outputs an address corresponding with a dynamic level of a simulated signal; a variance compare table component which compares the actual variance with a plurality of simulated variances of a signal simulated at the dynamic level output by the max value compare table for a plurality of noise floor dynamic levels, wherein the output of the variance compare table component represents the noise floor of the simulated variance that corresponds with the actual variance; and a BNE seed lookup table wherein a BNE seed value is determined based on the noise floor associated with the output from the variance compare table component.