Calculation and Adjustment of Perceived and / or Perceived Spectral Sound Balance of an Audio Signal

摘要

CALCULATION AND ADJUSTMENT OF PERCEIVED SOUND AND / OR SPECTRAL SOUND BALANCE OF AN AUDIO SIGN. The invention relates to the measurement and control of the perceived sound intensity and / or spectral sound balance of an audio signal. An audio signal is modified in response to calculations performed, at least in part, in the domain of perception (psychoacoustic) loudness. The invention is useful, for example, in one or more: loudness compensation volume control, automatic gain control, dynamic range control (which includes, for example, limiters, compressors, expanders, etc.), dynamic equalization and compensation for background noise interference in an audio playback environment. The invention includes not only methods, but also corresponding computer programs and apparatus.