Patent ID: 7953595

Claim:
A method of encoding an audio signal, the method comprising: transforming a frame of time domain samples of the audio signal to frequency domain, forming a long frame of transform coefficients; transforming n portions of the frame of time domain samples of the audio signal to frequency domain, forming n short frames of transform coefficients; wherein the frame of time domain samples has a first length (L); wherein each portion of the frame of time domain samples has a second length (S); wherein L=n×S; and wherein n is an integer; grouping a set of transform coefficients of the long frame of transform coefficients and a set of transform coefficients of the n short frames of transform coefficients to form a combined set of transform coefficients; quantizing the combined set of transform coefficients to form a set of quantization indices of the quantized combined set of transform coefficients; and coding the quantization indices of the quantized combined set of transform coefficients.