Encoding method and encoding device, decoding method and decoding device and transcoding method and transcoder for multi-object audio signals
AssigneeElectronics and Telecommunications Research Institute
InventorsJeong Il Seo, Kyeong Ok Kang
Life of this patent
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Abstract
A method of encoding a multi-object audio signal and an encoding apparatus, a decoding method and a decoding apparatus, and a transcoding method and a transcoder are provided. A multi-object audio signal encoding apparatus may encode object signals obtained by excluding ForeGround Objects (FGOs) from a plurality of input object signals, and may encode the FGOs, thereby providing a listener with a satisfactory sound quality.
Claims20
An encoding apparatus, comprising:
- a first encoder to downmix object signals, and to generate BackGround Objects (BGOs) and a Spatial Audio Object Codec (SAOC) parameter, the object signals being obtained by excluding ForeGround Objects (FGOs) from a plurality of input object signals;
- and
- a second encoder to downmix the FGOs and the BGOs, and to generate a final downmix signal and an Enhanced Karaoke-Solo (EKS) parameter.
An encoding method, comprising:
- downmixing object signals, and generating BackGround Objects (BGOs) and a Spatial Audio Object Codec (SAOC) parameter by a first encoder, the object signals being obtained by excluding ForeGround Objects (FGOs) from a plurality of input object signals;
- and
- downmixing the FGOs and the BGOs, and generating a final downmix signal and an Enhanced Karaoke-Solo (EKS) parameter by a second encoder.
A decoding apparatus, comprising:
- a bitstream analyzer to extract a Spatial Audio Object Codec (SAOC) parameter and an Enhanced Karaoke-Solo (EKS) parameter from a multiplexed SAOC bitstream;
- a first decoder to restore ForeGround Objects (FGOs) and BackGround Objects (BGOs) from a final downmix signal using the EKS parameter;
- a second decoder to generate a first rendered signal from the BGOs using the SAOC parameter and a rendering matrix;
- and
- a renderer to generate a final rendered signal using the FGOs and the first rendered signal.
A decoding method, comprising:
- extracting a Spatial Audio Object Codec (SAOC) parameter and an Enhanced Karaoke-Solo (EKS) parameter from a multiplexed SAOC bitstream;
- restoring ForeGround Objects (FGOs) and BackGround Objects (BGOs) from a final downmix signal using the EKS parameter;
- generating a first rendered signal from the BGOs using the SAOC parameter and a rendering matrix;
- and
- generating a final rendered signal using the FGOs and the first rendered signal.
A decoding apparatus, comprising:
- a bitstream analyzer to extract a Spatial Audio Object Codec (SAOC) parameter and an Enhanced Karaoke-Solo (EKS) parameter from a multiplexed SAOC bitstream;
- a first decoder to restore ForeGround Objects (FGOs) and BackGround Objects (BGOs) from a final downmix signal using the EKS parameter, and to render the restored FGOs based on a rendering matrix;
- a second decoder to render the BGOs using the SAOC parameter and the rendering matrix;
- and
- a renderer to combine the rendered FGOs and the rendered BGOs, and to generate a final rendered signal.
A decoding method, comprising:
- extracting a Spatial Audio Object Codec (SAOC) parameter and an Enhanced Karaoke-Solo (EKS) parameter from a multiplexed SAOC bitstream;
- restoring ForeGround Objects (FGOs) and BackGround Objects (BGOs) from a final downmix signal using the EKS parameter;
- rendering the restored FGOs based on a rendering matrix;
- rendering the BGOs using the SAOC parameter and the rendering matrix;
- and
- combining the rendered FGOs and the rendered BGOs and generating a final rendered signal.
Dependencies are inferred from the claim text.