用时间序列生成音频信号

用一个规则取样的 TimeSeries 控制正弦波的频率.

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n = 50; frequencies = RandomReal[{100, 300}, n]; reg = TimeSeries[frequencies, {0, Automatic, .3}];

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AudioGenerator[{"Sin", reg}]

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用一个不规则取样的 TimeSeries 控制正弦波的频率.

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times = Accumulate[RandomReal[{0.1, .5}, n]]; irreg = TimeSeries[frequencies, {times}];

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AudioGenerator[{"Sin", irreg}]

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用 WhiteNoiseProcess 生成一个白噪声.

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sample = RandomFunction[WhiteNoiseProcess[1/3], {88200}]

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重新缩放样品到 2 秒长，并生成音频信号.

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AudioNormalize@ AudioGenerator[TimeSeriesRescale[sample, {0, 2, 1/44100}]]

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AudioNormalize@ AudioGenerator[TimeSeriesRescale[sample, {0, 2, 1/44100}]]; AudioPlot[%]

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直接用 FractionalGaussianNoiseProcess 产生一个不同类型的噪音.

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AudioNormalize@AudioGenerator[FractionalGaussianNoiseProcess[1/3], 2]

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AudioNormalize@AudioGenerator[FractionalGaussianNoiseProcess[1/3], 2]; AudioPlot[%]

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