1. A signal enhancement system, comprising: a plurality of sub-band analysis filters configured to separate an input signal into a plurality of sub-band input signals; a plurality of delay logic circuits configured to receive the respective sub-band input signals and generate respective delayed sub-band signals; a plurality of adaptive filter circuits configured to receive the respective delayed sub-band signals; a plurality of reinforcement logic circuits coupled to the respective adaptive filter circuits and to the respective sub-band input signals; and a plurality of sub-band synthesis filters configured to receive an output from the respective reinforcement logic circuits and synthesize an output signal.