sweeney

Claim 1

A STEROPHONIC RECEIVING SYSTEM FOR RECEIVING A RADIO WAVE HAVING AMPLITUDE MODULATIONS REPRESENTATIVE OF A+B, AND FREQUENCY MODULATIONS REPRESENTATIVE OF A-B, WHEREIN A AND B ARE COHERENT AUDIO SIGNALS RESPECTIVELY CORRESPONDING TO SOUND INTELLIGENCE AT FIRST AND SECOND SPACED LOCATIONS, FIRST AND SECOND RECEIVING CHANNELS, MEANS APPLYING SAID AMPLITUDE AND SAID FREQUENCY MODULATIONS TO SAID FIRST AND SECOND RECEIVING CHANNELS, SAID FIRST RECEIVING CHANNEL HAVING A POSITIVELY SLOPING FREQUENCY RESPONSE CHARACTERISTIC OVER THE RANGE OF FREQUENCY DEVIATIONS OF SAID FREQUENCY MODULATIONS TO MODIFY THE AMPLITUDE OF SAID AMPLITUDE MODULATIONS, REPRESENTATIVE OF A+B, IN DIRECT PROPORTION TO THE INSTANTANEOUS FREQUENCY OF SAID FREQUENCY MODULATIONS, REPRESENTATIVE OF A-B, TO PRODUCE A FIRST RADIO FREQUENCY SIGNAL HAVING ENVELOPE AMPLITUDES CORRESPONDING TO SIGNAL A, SAID SECOND RECEIVING CHANNEL HAVING A NEGATIVELY SLOPING FREQUENCY RESPONSE CHARACTERISTIC OVER THE RANGE OF FREQUENCY DEVIATION OF SAID FREQUENCY MODULATIONS TO MODIFY THE AMPLITUDE OF SAID AMPLITUDE MODULATIONS, REPRESENTATIVE OF A+B, IN INVERSE PROPORTION TO THE INSTANTANEOUS FREQUENCY OF SAID FREQUENCY MODULATIONS, REPRESENTATIVE OF A-B, TO PRODUCE A SECOND RADIO FREQUENCY SIGNAL HAVING ENVELOPE AMPLITUDES CORRESPONDING TO SIGNAL B, SAID FIRST CHANNEL INCLUDING FIRST DETECTOR MEANS FOR DEMODUALTING SAID FIRST RADIO FREQUENCY SIGNAL, AND SAID SECOND CHANNEL INCLUDING SECOND DETECTOR MEANS TO DEMODULATE SAID SECOND RADIO FREQUENCY SIGNAL.