One of the long-crescendo F#s from the clarinet part of Messiaen's Abîme des Oiseaux represented as a spectrogram (using Chris Cannam’s Sonic Visualiser software) and the Lyrebird Environment Player. Lyrebird represents the pitch of the single strongest detected sinusoidal peak vertical position; amplitude by the size of the rectangle; and brightness, noisiness and bark scale data is used to determine the luminance, hue and saturation of each rectangle.
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