This is the paper I presented in Graz, at the 3rd Congress of the Alps Adria Acoustics Association¬†in 2007. It answers the question of what happens to the audio quality as you push the audio processing to the maximum, while you are broadcasting digitally (meaning there’s some kind of perceptual coding after the audio processor).


Abstract: Radio broadcasters have been pushing the loudness of FM processing for years in effort to attract more listeners, despite all accompanying negative effects on audio quality. It is likely to expect that such practice will continue with digital broadcasting as well. Our goal was to determine how listeners perceive varying degrees of aggressiveness of dynamics processing for digital broadcasting, and in particular how aggressive dynamics processing influences quality of perceptually coded audio. A listening test was conducted with eight samples of varied aggressiveness of dynamics processing, before and after encoding with HE-AAC v1 at 48 kbps stereo.

Key words: dynamics processing, digital audio broadcasting, audio quality, listening test, perceptual coding

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