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AudioEffectSpectrumAnalyzer

Inherits: AudioEffect < Resource < RefCounted < Object

Audio effect that can be used for real-time audio visualizations.

Description

This audio effect does not affect sound output, but can be used for real-time audio visualizations.

See also AudioStreamGenerator for procedurally generating sounds.

Tutorials

• Audio Spectrum Demo

• Godot 3.2 will get new audio features

Properties

float	buffer_length	2.0
FFTSize	fft_size	2
float	tap_back_pos	0.01

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Enumerations

enum FFTSize:

FFTSize FFT_SIZE_256 = 0

Use a buffer of 256 samples for the Fast Fourier transform. Lowest latency, but least stable over time.

FFTSize FFT_SIZE_512 = 1

Use a buffer of 512 samples for the Fast Fourier transform. Low latency, but less stable over time.

FFTSize FFT_SIZE_1024 = 2

Use a buffer of 1024 samples for the Fast Fourier transform. This is a compromise between latency and stability over time.

FFTSize FFT_SIZE_2048 = 3

Use a buffer of 2048 samples for the Fast Fourier transform. High latency, but stable over time.

FFTSize FFT_SIZE_4096 = 4

Use a buffer of 4096 samples for the Fast Fourier transform. Highest latency, but most stable over time.

FFTSize FFT_SIZE_MAX = 5

Represents the size of the FFTSize enum.

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Property Descriptions

float buffer_length = 2.0

• void set_buffer_length ( float value )

• float get_buffer_length ( )

The length of the buffer to keep (in seconds). Higher values keep data around for longer, but require more memory.

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FFTSize fft_size = 2

• void set_fft_size ( FFTSize value )<