SYSTEMS AND METHODS FOR DYNAMIC NORMALIZATION TO REDUCE LOSS IN PRECISION FOR LOW-LEVEL SIGNALS

摘要

A dynamic normalization factor for a current frame of a signal is determined to reduce loss in precision for low-level signals. The normalization factor depends on an amplitude of the current frame of the signal. The normalization factor also depends on values of filter states after one or more operations were performed on a previous frame of a normalized signal and on the normalization factor for the previous frame. The current frame of the signal is normalized based on the normalization factor that is determined. The states' normalization factor may be adjusted based on the normalization factor that is determined.