Removing time delays in signal paths
First Claim
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1. A method of decoding an audio signal performed by an audio decoding apparatus, comprising:
- receiving, in the audio decoding apparatus, an audio signal including a downmix signal of a time domain and spatial information, the spatial information being delayed within the audio signal according to a first scheme;
domain converting, in the audio decoding apparatus, the downmix signal of the time domain according to a second scheme;
delaying, in the audio decoding apparatus, the domain-converted downmix signal by an amount of time substantially equal to a difference between an amount of delay of the spatial information within the audio signal and an elapsed time during the domain converting of the downmix signal; and
combining, in the audio decoding apparatus, the delayed downmix signal with the spatial information.
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Abstract
The disclosed embodiments include systems, methods, apparatuses, and computer-readable mediums for compensating one or more signals and/or one or more parameters for time delays in one or more signal processing paths.
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Citations
15 Claims
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1. A method of decoding an audio signal performed by an audio decoding apparatus, comprising:
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receiving, in the audio decoding apparatus, an audio signal including a downmix signal of a time domain and spatial information, the spatial information being delayed within the audio signal according to a first scheme; domain converting, in the audio decoding apparatus, the downmix signal of the time domain according to a second scheme; delaying, in the audio decoding apparatus, the domain-converted downmix signal by an amount of time substantially equal to a difference between an amount of delay of the spatial information within the audio signal and an elapsed time during the domain converting of the downmix signal; and combining, in the audio decoding apparatus, the delayed downmix signal with the spatial information. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for decoding an audio signal, comprising:
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an audio signal receiving unit receiving an audio signal including a downmix signal of a time domain and spatial information, the spatial information being delayed within the audio signal according to a first scheme; a processor of a domain converting unit converting the downmix signal of the time domain according to a second scheme; a delaying unit delaying the domain-converted downmix signal by an amount of time substantially equal to a difference between an amount of delay of the spatial information within the audio signal and an elapsed time during the domain converting of the downmix signal; and a processor of a spatial information combining unit combining the delayed downmix signal with the spatial information. - View Dependent Claims (7, 8, 9, 10)
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11. A computer-readable medium selected from the group consisting of a non-volatile medium, a volatile medium, and combinations thereof the computer-readable medium having instructions stored thereon, which, when executed by a processor, cause the processor to perform:
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receiving an audio signal including a downmix signal of a time domain and spatial information, the spatial information being delayed within the audio signal according to a first scheme; domain converting the downmix signal of the time domain according to a second scheme; delaying the domain-converted downmix signal by an amount of time substantially equal to a difference between an amount of delay of the spatial information within the audio signal and an elapsed time during the domain converting of the downmix signal; and combining the delayed downmix signal with the spatial information. - View Dependent Claims (12, 13, 14, 15)
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Specification