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AssigneeSony Corporation
InventorsMasatoshi Ueno, Shinji Miyamori
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An encoding method and apparatus for encoding multi-channel signals employed in, for example, a stereo system of a video disc player, a video tape recorder, a motion picture film picture system, or a so-called multi-surround acoustic system. Five channels, namely the center (C) channel, left (L) channel, right (R) channel, left surround (SL) channel and the right surround (SR) channel, for example, are handled in common depending upon frequency characteristic of digital audio signal and the targeted playback environment, and encoding is done while the combinations of the channels to be handled in common are altered. High compression may be achieved with the use of pre-existing encoding and decoding units by handling the channels in common without dependency upon the degree of correlation of multi-channel digital data.
An encoding method for encoding digital signals of plural channels, comprising the steps of:
An encoding apparatus for encoding digital signals of plural channels, comprising:
A decoding apparatus for decoding encoded digital signals using parameters for encoding, said encoded digital signals being signals in which at least a part of digital signals of plural channels are handled as one or more common signals, with combinations of channels for common handling being altered in dependence upon at least one of frequency characteristics of the digital signals and a targeted playback environment, comprising:
A recording medium having recorded thereon such a signal in which part or all of digital signals of plural channels are handled as one or more encoded common signals, with combinations of channels for common handling being altered in dependence upon frequency characteristics of the digital signals and a targeted playback environment, parameter information specifying the combinations of channels to be handled in common, and an encoded signal other than the common signals and the parameter information for encoding are recorded along with the parameter information concerning the encoding.
A recording medium having encoded digital signals recorded thereon, the recording medium being prepared by the steps of:
Dependencies are inferred from the claim text.