java.lang.NoSuchMethodError: com.musicg.wave.extension.Spectrogram.getSpectrogramData()

[GoogleCodeExporter]

Tried to run the RenderSpectrogramDemo but I got an error. It seems that a 
method is missing from the class Spectrogram. 

See below for details. 

Exception in thread "main" java.lang.NoSuchMethodError: 
com.musicg.wave.extension.Spectrogram.getSpectrogramData()[[D
    at com.musicg.graphic.GraphicRender.renderSpectrogram(GraphicRender.java:138)
    at RenderSpectrogramDemo.main(RenderSpectrogramDemo.java:39)

Original issue reported on code.google.com by Albert.L...@gmail.com on 19 Sep 2012 at 3:27