Audio gain control using specific-loudness-based auditory event detection

摘要

In one disclosed aspect, dynamic gain modifications are applied to an audio signal at least partly in response to auditory events and/or the degree of change in signal characteristics associated with said auditory event boundaries. In another aspect, an audio signal is divided into auditory events by comparing the difference in specific loudness between successive time blocks of the audio signal.

主权项

1. An audio processing method to generate a second signal by applying dynamic gain modifications to a first signal, the method comprising:
detecting changes in loudness with respect to time in the first signal, identifying as auditory event boundaries changes greater than a threshold in loudness with respect to time in the first signal, wherein an audio segment between consecutive boundaries constitutes an auditory event, and applying a dynamic gain modification to the first signal based on said auditory event to generate the second signal; wherein the audio processing method is performed by one or more processors.