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Method for decoding an audio signal

  • US 8,577,483 B2
  • Filed: 08/30/2006
  • Issued: 11/05/2013
  • Est. Priority Date: 08/30/2005
  • Status: Active Grant
First Claim
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1. A method of decoding an audio signal, comprising:

  • receiving the audio signal including an audio descriptor, a downmix signal and a spatial information signal, the audio descriptor including basic information of an audio codec, the basic information including at least one of a transmission rate of the received audio signal, a number of channels, a sampling frequency, an identifier indicating a currently used codec, the spatial information signal including channel level difference (CLD) indicating an energy difference between channels, inter-channel coherences (ICC) meaning a correlation between channels for a OTT box, and channel configuration information including a division identifier indicating a signal is connected to the OTT box and a non-division identifier indicating a signal is connected to an output channel;

    generating a multi-channel audio signal from the downmix signal using one or more OTT (One-To-Two) boxes and the channel configuration information; and

    mapping the multi-channel audio signal to a speaker using speaker mapping information, the speaker mapping information being extracted from the spatial information signal,wherein the downmix signal is generated by downmixing a multi-channel audio signal.

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