Seamless frequency hopping system

Claim 1

A seamless frequency hopping system for use in conjunction with a frequency hopping radio of the type including a radio microphone port, a radio audio amplifier port, a radio transmitter and a radio receiver, said system comprising: audio input interface circuitry means including analog to digital converter means and anti-aliasing filter means for receiving an analog input from said radio via an input line and for providing a digitized signal; digital signal processor means connected to said radio via a transmit/receive line and a change frequency strobe line, and connected to said input interface circuitry means for processing said digitized signal and for providing a processed signal, said digital signal processor means including means for implementing seamless frequency hopping on said digitized signal in the time domain via audio time compression for providing said processed signal; memory means connected to said digital signal processor means for providing storage for said digital signal processor means; audio output interface circuitry means including digital to analog connector means and anti-aliasing filter means connected to said digital signal processor means and connected to said radio for receiving said processed signal from said digital signal processor means and for providing an output signal to said radio via an output line; and said system sensing via the transmit/receive line when said radio is in a transmitting mode and in a receiving mode, and when said radio is in the transmitting mode said system receives an audio signal from the radio microphone port via the input line and outputs a processed audio signal for transmission to the radio transmitter via the output line, and when said radio is in the receiving mode said system receives an audio signal from the radio receiver via the input line and outputs a processed audio signal for transmission to the radio amplifier via the output line.