第 1 步

snd = ExampleData[{"Sound", "Apollo11ReturnSafely"}]

输出

ExampleData[{Sound, Apollo11ReturnSafely}]

第 2 步

cwd = ContinuousWaveletTransform[snd, GaborWavelet[6], {Automatic, 12}]

输出

ContinuousWaveletTransform[ExampleData[{Sound, Apollo11ReturnSafely}], GaborWavelet[6], {Automatic, 12}]

第 3 步

sty = Directive[14, FontFamily -> "Helvetica"];

无输出——这一步是在为下一步做准备。

第 4 步

WaveletScalogram[cwd, {3 | 4 | 5 | 6 | 7, _}, ImageSize -> 570, Ticks -> {Automatic, {#, Superscript[2, #]}& /@ Range[7]}, TicksStyle -> sty, AxesLabel -> {Style["Time", sty], Style["Scale", sty]}, ColorFunction -> ColorData["SiennaTones"]]

输出

WaveletScalogram[ContinuousWaveletTransform[ExampleData[{Sound, Apollo11ReturnSafely}], GaborWavelet[6], {Automatic, 12}], {3 | 4 | 5 | 6 | 7, _}, ImageSize -> 570, Ticks -> {Automatic, {{1, Superscript[2, 1]}, {2, Superscript[2, 2]}, {3, Superscript[2, 3]}, {4, Superscript[2, 4]}, {5, Superscript[2, 5]}, {6, Superscript[2, 6]}, {7, Superscript[2, 7]}}}, TicksStyle -> Directive[14, FontFamily -> Helvetica], AxesLabel -> {Time, Scale}, ColorFunction -> ColorDataFunction[SiennaTones, Gradients, {0, 1}, Blend["SiennaTones", #1] & ]]

在 Qurak 上运行全部操作示例

用到的函数

ColorData ContinuousWaveletTransform Directive ExampleData GaborWavelet Range Style Superscript WaveletScalogram

Directly transform sound

用到的函数

相关操作示例