Voice discriminating system

A voice discriminating system responsive to sound inputs, comprising:

• first and second transducing and amplifying means responsive to spoken sounds for providing respective first and second output signals representative of the respective sound inputs provided to said first and second transducing means;
• first and second low-pass filtering means respectively responsive to said first and second output signals for respectively providing first and second low-pass outputs representative of the low frequency components in said first and second outputs;
• first and second peak detecting and integrating means responsive to said first and second low-pass outputs for respectively providing first and second envelope outputs as a function of said first and second low-pass outputs;
• means for comparing said first and second envelope outputs to provide a comparison output signal indicative of which envelope signal is larger in amplitude than the other envelope signal;
• means responsive to said comparison output for preventing the peak detecting and integrating means associated with the envelope signal of lower amplitude from providing an envelope signal;
• frequency detecting means responsive to said comparison output for sampling the output signal from the one of said first and second transducing and sampling means associated with the envelope signal of larger amplitude and for providing an output indicative of the presence of predetermined high frequency components in said output signal;
• and
• controller means responsive to said comparison means output and said frequency detecting means for providing an output as a function of said comparison means output and said frequency detecting means output.