Electronic conversions of speech

Claim 1

APPARATUS FOR COMMUNICATING THE INTELLIGIBILITY IN SPEECH BY WAY OF ELECTRICAL WAVES OF NARROW BANDWITH, COMPRISING MEANS PRODUCING ELECTRICAL SIGNALS CHARACTERIZING ONLY THE HIGHER-FREQUENCY COMPONENTS OF SPEECH WAVES, MEANS LIMITING THE AMPLITUDES OF SAID SIGNALS TO A SUBSTANTIALLY UNIFORM VALUE, FREQUENCY-METERING MEANS RESPONSIVE TO THE LIMITED SIGNALS PRODUCING UNIDIRECTIONAL ELECTRICAL WAVES HAVING MAGNITUDES RELATED TO THE FREQUENCIES OF SAID SIGNALS, MEANS FOR PRODUCING AND TRANSMITTING A CARRIER WAVE OF RADIO FRQUENCY, MODULATOR MEANS FOR FREQUENCY MODULATING SAID CARRIER WAVE IN ACCORDANCE WITH SAID UNIDIRECTIONAL ELECTRICAL WAVES, MEANS FOR RECEIVING THE FREQUENCY-MODULATED CARRIED WAVE AND INCLUDING OSCILLATOR MEANS AND MEANS MIXING THE OUTPUT OF SAID OSCILLATOR MEANS WITH THE RECEIVED FREQUENCYMODULATED WAVE TO PRODUCE AUDIO-FREQUENCY SIGNALS HAVING FREQUENCIES RELATED TO THE MAGNITUDES OF SAID UNIDIRECTIONAL ELECTRICAL WAVES, AND MEANS FOR CONVERTING SAID AUDIO-FREQUENCY SIGNALS INTO SOUND WAVES.