Patent ID: 6741965
Filing Date: 2004-05-25
Classification: G10L,G11B,H04H,H04S

Abstract:
A coding method for coding signals, comprising the steps of:generating a first audio signal from a stereo channel included in a plurality of input channels, wherein the stereo channel corresponds to a right channel having an acoustic signal and a left channel having another acoustic signal; determining a signal level corresponding to one of the right and left channels and another signal level from the other of the right and left channels; selecting a second audio signal on the basis of the signal levels such that the second audio signal is selected from the group consisting of the right channel, the left channel, and a signal generated by subtracting the right channel from the left channel that is different than the first audio signal; coding the first audio signal; coding the selected second audio signal via a first coding technique; and coding a signal that indicates the selection of the second audio signal via a second coding technique; wherein the first coding technique is different from the second coding technique.