AT LEAST ONE OF INTELLIGIBILITY OR LOUDNESS OF AN AUDIO PROGRAM

摘要

A system for improving intelligibility or loudness of an audio program includes an encoder that receives signals of the audio program including at least one of left/front and right/front or left and right signals that include some anchor components of the audio program and to downmix the received signals to obtain left downmix and right downmix signals. The system includes a decoder that upmixes the left downmix and right downmix signals to obtain a center upmix signal that includes a majority of the anchor components including at least some anchor components that were included in the left/front and right/front signals or the left and right signals. The system also includes a system output that provides the center upmix signal to process at least one of the signals of the audio program based on the center upmix signal to improve intelligibility or loudness of the audio program.

主权项

1. A method for improving at least one of intelligibility or loudness of an audio program, the method comprising:
detecting whether at least one of a center/front signal or a surround signal is present among signals of the audio program; and if at least one of the center/front or the surround signal is present among the signals of the audio program:
receiving the audio signals of the audio program including at least left/front, center/front and right/front signals each of which includes at least some anchor components of the audio program;downmixing the left/front, center/front and right/front signals to obtain left downmix and right downmix signals; andupmixing the left downmix and right downmix signals to obtain at least a center upmix signal, which includes a majority of the anchor components of the audio program including at least some anchor components of the audio program that were included in the left/front and right/front signals; and if at least one of the center/front or the surround signal is not present among the signals of the audio program:
receiving the audio signals of the audio program including at least left and right signals each of which includes at least some anchor components of the audio program; andupmixing the left and right signals to obtain at least the center upmix signal, which includes a majority of the anchor components of the audio program including at least some anchor components of the audio program that were included in the left and right signals; and providing the center upmix signal to process at least one of the signals of the audio program based on the center upmix signal to improve at least one of intelligibility or loudness of the audio program.