Patent ID: 8209190

Claim:
A method for an embedded audio encoder to embed coding of a signal, comprising the steps of: the embedded audio encoder receiving an input signal to be coded; a first layer of the embedded audio encoder coding the input signal to produce a first layer reconstructed audio signal; a second layer of the embedded audio encoder scaling the first layer reconstructed audio signal with a plurality of gain values to produce a plurality of scaled reconstructed audio signals, wherein the plurality of gain values are a function of the first layer reconstructed audio signal and further, wherein each of the plurality of scaled reconstructed audio signals has an associated gain value; the second layer of the embedded audio encoder determining a plurality of error values based on the input signal and each of the plurality of scaled reconstructed audio signals; the second layer of the audio encoder choosing a gain value from the plurality of gain values based on the plurality of error values; and the embedded audio encoder transmitting or storing the gain value as part of an enhancement layer to a coded audio signal.