Patent ID: 11962279
Assignee: DOLBY LABORATORIES LICENSING CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 6:
7. An audio processing apparatus, the apparatus comprising:
an input interface for receiving the audio signal, the audio signal comprising at least two channels of audio content;
an analysis filter bank for dividing the audio signal into at least a subband signal, wherein the subband signal comprises at least one subband sample; and
a processor that:
derives a characteristic of the audio signal, wherein the characteristic is a power measure of the audio signal;
smooths the power measure to generate a smoothed power measure of the audio signal;
detects a location of an auditory event boundary by monitoring the smoothed power measure, wherein an audio portion between consecutive auditory event boundaries constitutes an auditory event, wherein the detecting further includes applying a threshold to the smoothed power measure to detect the location of the auditory event boundary;
generates a gain vector based on the location of the auditory event boundary; and
applies the gain vector to the audio signal;
wherein the audio processing apparatus includes at least some hardware.