Patent ID: 11929091
Assignee: DOLBY LABORATORIES LICENSING CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. The apparatus of claim 1, wherein the feature extractor comprises:
a signal transformer that is configured to generate transform domain information from the input audio signal;
a features calculator that is configured to calculate a plurality of raw features from the transform domain information;
a parameter mask that is configured to apply masking to the plurality of raw features, to generate a plurality of modified features;
a histogram analyzer that is configured to calculate a plurality of histograms on a plurality of parameter bands for each of the plurality of modified features; and
a statistics calculator that is configured to calculate a plurality of window-level statistics from the plurality of modified features and the plurality of histograms, wherein the plurality of window-level statistics correspond to the plurality of features extracted by the feature extractor.