Method and an Apparatus for Decoding an Audio Signal

Abstract

A method of decoding for an audio signal comprises the step of receiving a downmix of an audio signal, an object information, and a mix information, the object information including an object level information, an object correlation information, and an object gain information, generating a downmix processing information using the object information and the mix information, and processing the downmix of the audio signal using the downmix processing information. Various embodiments of the present invention provide a method and an apparatus for decoding multi-object audio signals fast and efficiently by reducing process time, computer resource, thereby relieving the resource requirement like the wide bandwidth. The object parameters according to the embodiments of the present invention can provide backward compatibility in the view of the channel-oriented decoding process.

Description

RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Patent Application Nos. 60 / 865,908, 60 / 869,007, 60 / 869,080, 60 / 889,715, 60 / 955,395, and 60 / 883, 567, filed on Nov. 15, 2006, Dec. 7, 2006, Dec. 7, 2006, Feb. 13, 2007, Aug. 13, 2007, and Jan. 5, 2007, respectively, each of which is hereby incorporated by reference.BACKGROUND[0002]1. Field of the Invention[0003]The present invention relates to a method and an apparatus for decoding an audio signal, and more particularly, to a method and an apparatus for decoding an audio signal received via various digital medium.[0004]2. Discussion of the Related Art[0005]While downmixing several audio objects to a mono or a stereo audio signal, information (e.g., parameters) from individual object signals of the audio signal can be extracted. This information can be used in a decoder for decoding of the audio signal.[0006]A MCU (Multipoint Control Unit) is a device that can be used in a teleconference to articulate pr...

AI Technical Summary

Benefits of technology

The present invention provides a method and apparatus for decoding an audio signal by using object information to modify the downmix of the signal. This helps to improve the quality of the audio signal and overcome the limitations of existing methods. The invention can be used in applications such as teleconferencing to control the output of the audio signal. The technical effects of the invention include improved audio quality, better spatial sound perception, and better overall listening experience.

Problems solved by technology

But when multi-channel audio signals having only multi-channel parameters are used in the MCU, the MCU only can control the gain and panning of one of the channels and cannot control the gain and panning of individual object signals.

However, an apparatus and method for decoding multi-object signals needs a wide bandwidth.

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