Helium voice translator utilizing either a glottal synchronous or a memory full reset signal

Claim 1

A helium voice translator for translating the voiced sounds of a diver breathing a helium oxygen mixture, comprising: an input circuit for receiving a voice input wave corresponding to the aforesaid voice sounds; means coupled to said input circuit for successively storing increments of the voice input wave received thereby cyclically at a first selected rate of storage, and including a storage counter, first switch means and a bank of condensers, said voice input wave being stored as incremental charges on individual ones of said bank of condensers and said bank of condensers being sequentially and for discrete intervals of time connected to the input circuit by said first switch means, said first switch means comprising a series of switches connected to and successively actuated by the operation of successive stages of said storage counter; an output circuit; means for cyclically reading out said incremental charges on said bank of condensers at a selected rate lower than said first selected rate, said last-named means including a readout counter, and second switch means comprising a series of switches respectively connected to successive stages of said readout counter and successively actuated by the operation of such stages, said second switch means successively connecting the condensers of said bank of condensers to the output circuit; first circuit means having an input connected to said input circuit and including a glottal synchronizer network for producing a reset pulse in the presence of glottal sounds appearing on said voice input wave received by said input circuit, and said first circuit means having an output connected to said storage counter and to said readout counter to introduce said reset pulse to the counters so as to terminate a storage and readout cycle and to initiate a new storage and readout cycle; and second circuit means having an input connected to the output of said readout counter and operative in the absence of a glottal sound on said voice input wave received by said input circuit to produce a reset pulse at the termination of a readout cycle, said second circuit means having an output connected to said storage counter and to said readout counter to introduce said last-named reset pulse to the counters so as to terminate a storage and readout cycle and to initiate a new storage and readout cycle.