Patent ID: 8032385
Filing Date: 2011-10-04
Classification: G10L,H03G

Abstract:
1. A method for correcting playback loudness of audio information, wherein the method comprises steps that: receive an input signal that conveys data representing a first loudness normalization level and first encoded audio information, wherein the data conveyed by the input signal was produced by an encoding process that generated the first encoded audio information according to psychoacoustic principles; obtain segments of decoded audio information from an application of a decoding process to the input signal; identify which of the segments of decoded audio information are predominantly speech; obtain a respective measure of loudness for each of the segments of audio information from an analysis of the decoded audio information that accounts for presence or absence of speech and derive a second loudness normalization level for each segment from its respective measure of loudness; generate an output signal that conveys data representing a third loudness normalization level and segments of third encoded audio information representing the segments of decoded audio information in an encoded form, wherein: