AudioAnalysis: Displaying the Spectrum and Spectrogram of Incoming Audio in Realtime

Software Is Found Here: AudioAnalysis


It is possible to control the following features:
colour or greyscale plotting of spectrogram
amplitude or phase (amplitude is probably most interesting)
linear and logarithmic frequency distribution
amplitude range (= “filtering”)
low and high frequency values

The program also have the optional feature of displaying the following perceptually relevant features:
Pitch is measured with an adapted version of fiddle~ from Miller Puckette
Brightness is measured with the spectral centroid
Loudness is measured with the spectral energy
Noisiness is measured with the Bark-based spectral flatness measure (SFM)
The bark spectrum is an auditory model spectrum decomposition

Aviary: On-Line Audio Editor

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Powerful Clip Editing

Trim, Loop, Stretch and Reverse your audio clips, width editable loop points, and interactive time stretch capabilities

Audacity: The Best Free, Cross-Platform Sound Editor