SOUND DECODER Russian patent published in 1997 - IPC

FIELD: radio equipment; actuating various domestic appliances. SUBSTANCE: device has microphone, active filter, series-connected counter and load switching device as well analog-to-digital converter, four storage devices, two comparators, two timers, pulse generator, address indicator, and mode selector. Active filter output is connected to analog-to-digital converter and timers whose output is coupled with control inputs of analog-to-digital converter, counter, and four storage devices; outputs of analog-to-digital converter and counter are connected to data and address inputs of storage devices whose inputs are connected in pairs to inputs of address and instruction comparators whose outputs are connected to address indicator and load switch. EFFECT: provision for sequential control of several devices with improved immunity to false audio signals. 5 dwg