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TIME-VARYING AUDIO-SIGNAL LEVEL USING A TIME-VARYING ESTIMATED PROBABILITY DENSITY OF THE LEVEL
TIME-VARYING AUDIO-SIGNAL LEVEL USING A TIME-VARYING ESTIMATED PROBABILITY DENSITY OF THE LEVEL
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机译:使用随时间变化的估计概率密度水平,随时间变化的音频信号水平
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摘要
Methods, media and apparatus for smoothing a time-varying level of a signal. A method includes estimating a time-varying probability density of a short-term level of the signal and smoothing a level of the signal by using the probability density. The signal may be an audio signal. The short-term level and the smoothed level may be time series, each having current and previous time indices. Here, before the smoothing, computing a probability of the smoothed level at the previous time index may occur. Before the smoothing, calculating smoothing parameters using the probability density may occur. Calculating the smoothing parameters may include calculating the smoothing parameters using the smoothed level at the previous time index, the short-term level at the current time index and the probability of the smoothed level at the previous time index. Calculating the smoothing parameters may include calculating the smoothing parameters using breadth of the estimated probability density.
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