<?xml version="1.0" encoding="UTF-8" ?> <class name="AudioEffectSpectrumAnalyzer" inherits="AudioEffect" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd"> <brief_description> Audio effect that can be used for real-time audio visualizations. </brief_description> <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. </description> <tutorials> <link title="Audio Spectrum Demo">https://godotengine.org/asset-library/asset/528</link> <link title="Godot 3.2 will get new audio features">https://godotengine.org/article/godot-32-will-get-new-audio-features</link> </tutorials> <members> <member name="buffer_length" type="float" setter="set_buffer_length" getter="get_buffer_length" default="2.0"> The length of the buffer to keep (in seconds). Higher values keep data around for longer, but require more memory. </member> <member name="fft_size" type="int" setter="set_fft_size" getter="get_fft_size" enum="AudioEffectSpectrumAnalyzer.FFTSize" default="2"> The size of the [url=https://en.wikipedia.org/wiki/Fast_Fourier_transform]Fast Fourier transform[/url] buffer. Higher values smooth out the spectrum analysis over time, but have greater latency. The effects of this higher latency are especially noticeable with sudden amplitude changes. </member> <member name="tap_back_pos" type="float" setter="set_tap_back_pos" getter="get_tap_back_pos" default="0.01"> </member> </members> <constants> <constant name="FFT_SIZE_256" value="0" enum="FFTSize"> Use a buffer of 256 samples for the Fast Fourier transform. Lowest latency, but least stable over time. </constant> <constant name="FFT_SIZE_512" value="1" enum="FFTSize"> Use a buffer of 512 samples for the Fast Fourier transform. Low latency, but less stable over time. </constant> <constant name="FFT_SIZE_1024" value="2" enum="FFTSize"> Use a buffer of 1024 samples for the Fast Fourier transform. This is a compromise between latency and stability over time. </constant> <constant name="FFT_SIZE_2048" value="3" enum="FFTSize"> Use a buffer of 2048 samples for the Fast Fourier transform. High latency, but stable over time. </constant> <constant name="FFT_SIZE_4096" value="4" enum="FFTSize"> Use a buffer of 4096 samples for the Fast Fourier transform. Highest latency, but most stable over time. </constant> <constant name="FFT_SIZE_MAX" value="5" enum="FFTSize"> Represents the size of the [enum FFTSize] enum. </constant> </constants> </class>