Widlar and the 'Hassler'

Today I will recount an anecdote about Bob Widlar(said Widlaar), a genius in his own right. (I first read it on Robert Pease's page at National Semiconductor. ) Widlaar was the first to design a monolithic amplifier. Its still known for its simplicity and employment of fundamental circuits for its construction. Anyway, Bob once designed a "hassler," which would hassle/irritate people who yelled around him. The device would detect any loud sound and convert it into a high-frequency note in the audio-range. The louder the subject the increasingly lower the pitch would get, creating a sort of ringing noise for the nagger, turning tables on him. The nagger would get nagged and if he stopped so would the 'hassler.' Na rahega baas, na bajegi bansuri(no bamboo, no flute)!