Patent ID: 8929558
Filing Date: 2015-01-06
Classification: G10L,H04H,H04S

Abstract:
1. An apparatus for improving a left/right or mid/side audio signal output by an FM stereo radio receiver, the apparatus comprising: an input stage configured to receive the left/right or mid/side audio signal from the FM stereo radio receiver; a downmix stage, the downmix stage configured to generate a first audio signal based on the left/right or mid/side audio signal by a downmix operation; a parametric stereo parameter estimation stage, the parameter estimation stage configured to determine one or more parametric stereo parameters based on the left/right or mid/side audio signal in a frequency-variant or frequency-invariant manner; and a stereo mixing module, the stereo mixing module configured to generate a stereo signal based on the first audio signal and the one or more parametric stereo parameters; wherein the downmix stage, the parametric stereo parameter estimation stage and the stereo mixing module are implemented in a same module.