使用噪声掩蔽准则估计感知熵

ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1988-04-11 DOI:10.1109/ICASSP.1988.197157

J. Johnston

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引用次数: 153

摘要

音频刺激的每个短期部分的感知熵被估计为编码信号的短期频谱所需的比特数，通过该过程测量的分辨率提供了一个熵估计，对于透明编码，电话语音(200-3200-Hz带宽以8 kHz采样)为1.4(平均)或2.1(峰值)比特/样本。本文还报道了其他带宽和采样率音频信号的熵测度。

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Estimation of perceptual entropy using noise masking criteria

The perceptual entropy of each short-term section of the audio stimuli is estimated as the number of bits required to encode the short-term spectrum of the signal to the resolution measured by this process provide an entropy estimate, for transparent coding, of 1.4 (mean) or 2.1 (peak) bits/sample for telephone speech (200-3200-Hz bandwidth sampled at 8 kHz). The entropy measures for audio signals of other bandwidths and sampling rates is also reported.<>

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ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing

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