CPC H04S 3/008 (2013.01) [G10L 19/008 (2013.01); H04S 1/007 (2013.01); G10L 19/022 (2013.01); G10L 19/0204 (2013.01); H04S 2400/01 (2013.01); H04S 2420/03 (2013.01); H04S 2420/07 (2013.01)] | 26 Claims |
1. An apparatus comprising:
a receiver configured to receive a bitstream that includes an encoded mid signal and encoded stereo parameter information, the encoded stereo parameter information representing:
a first value of a stereo parameter, the first value associated with a first frequency range; and
a second value of the stereo parameter, the second value associated with a second frequency;
a mid signal decoder configured to decode the encoded mid signal to generate a decoded mid signal;
a transform unit configured to perform a transform operation on the decoded mid signal to generate a frequency-domain decoded mid signal;
a stereo decoder configured to decode the encoded stereo parameter information to determine the first value and the second value;
a stereo parameter conditioner configured to perform a conditioning operation on the first value and the second value to generate a conditioned value of the stereo parameter, the conditioned value associated with a particular frequency range that is a subset of the first frequency range or a subset of the second frequency range;
an up-mixer configured to perform an up-mix operation on the frequency-domain decoded mid signal to generate a first frequency-domain output signal and a second frequency-domain output signal, the conditioned value applied to the frequency-domain decoded mid signal during the up-mix operation; and
an output device configured to output a first output signal and a second output signal, the first output signal based on the first frequency-domain output signal and the second output signal based on the second frequency-domain output signal.
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