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    • 2. 发明授权
    • Arbitrary shaping of temporal noise envelope without side-information utilizing unchanged quantization
    • 使用不变量化的边信息任意整形时间噪声包络
    • US08706507B2
    • 2014-04-22
    • US12310124
    • 2007-08-10
    • Mark Stuart Vinton
    • Mark Stuart Vinton
    • G10L19/00G10L19/008H04B1/66
    • G10L19/008G10L19/03G10L19/032H04B1/665
    • In a first aspect, arbitrary shaping of the temporal envelope of noise is provided in spectral domain coding systems without the need of side-information. In the encoding, a filtered measure of quantization error is applied as a feedback signal to the frequency-domain representation of a discrete time-domain signal prior to quantization, so that the filtering parameters of said filtering affect the shaping of quantization noise in the time domain of the quantized frequency-domain representation with unchanged quantization of the discrete time-domain signal when it is inversely transformed from the frequency domain back to the time domain in decoding. This may be accomplished with respect to each of a plurality of frequency bins or groups of bins. In another aspect, frequency-domain noise-feedback quantizing in digital audio encoding is provided.
    • 在第一方面,在频域编码系统中提供噪声的时间包络的任意整形,而不需要侧信息。 在编码中,滤波量化误差的量度作为反馈信号施加到量化之前的离散时域信号的频域表示,使得所述滤波的滤波参数在时间上影响量化噪声的整形 当离散时域信号在解码时从频域反向变换到时域时,量化的量化频域表示的域不改变。 这可以相对于多个频率仓或箱组中的每一个来完成。 在另一方面,提供了数字音频编码中的频域噪声反馈量化。