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Version: 2.0.0-preview

Audio Spectrum

Visualizes the audio frequency spectrum at the current time using an FFT. Frequencies can be displayed on a linear, logarithmic or mel scale.

Library location​

Library → Audio Visualizer → Audio Spectrum

Properties​

Shape​

How each frequency bin is drawn.

  • Type: SpectrumShape?
  • Default: Bar (BarSpectrumShape)
  • Animatable: No

The available shapes are:

  • Bar
  • Filled
  • Line
  • Mirrored bar
  • Radial

Bar Count (BarCount)​

Number of frequency bars displayed.

  • Type: int
  • Default: 128
  • Animatable: No
  • Range: [1, 10000]

FFT Size (FftSize)​

FFT size (must be a power of two; larger gives finer frequency resolution).

  • Type: int
  • Default: 1024
  • Animatable: No
  • Range: [64, 16384]

Frequency Scale (FrequencyScale)​

Frequency-axis scale (Linear / Logarithmic / Mel).

  • Type: FrequencyScale
  • Default: AudioVisualizers.FrequencyScale.Logarithmic
  • Animatable: No

Floor (dB) (FloorDb)​

Floor of the displayed level in dB; values below are clipped.

  • Type: float
  • Default: -80
  • Animatable: Yes
  • Range: [-200, 0]

Smoothing​

Temporal smoothing factor (0 = no smoothing, larger = more averaging).

  • Type: float
  • Default: 85
  • Animatable: Yes
  • Range: [0, 99]

Common properties​

This object inherits from AudioVisualizerDrawable and exposes the common properties declared on its base classes.

Usage​

Set a scene reference (audio) on Source and assign the current scene to display a spectrum synchronized with the audio.

Source​

src/Beutl.Engine/Graphics/AudioVisualizers/AudioSpectrumDrawable.cs