to generate constant volume levels on programs and the associated advertisement volume levels.
I understand the constituents that go to make up speech. Therefore I know how to set controls to equalize volume levels of programs and associated advertisements.
al mond commented
My entire career and military service was spent in the electronic field. It was only when my own hearing diminished that I looked for the root cause. It was found in the nature of speech itself. And so I went further to analyze what was needed to remedy the nature of speech itself.