Audio

Audio Nodes Pro

Audio Feature Sampler Analyzer

Inputs

Audio Data: Input audio. - Frequency Map: (Optional) Frequency data.

Widgets

frequency_band: Bass, Mids, Highs… - smoothing: Temporal smoothing (0.0-1.0). - normalize: Remap to 0-1.

Outputs

- Modulation: Audio curve values.

Description

Samples audio features (like volume/amplitude) synchronized to the project’s frame count.

Parameters

Widget	Type	Description
frequency_band	`Dropdown`	The frequency range to analyze (e.g., `Bass`, `Highs`, `Overall Amplitude`).
smoothing	`Float`	Applies smoothing to reduce jitter. `0.0` = Raw, `0.9` = Very Smooth.
normalize	`Bool`	If true, re-maps the output values to the `0.0 - 1.0` range for easier use.

Audio Frame Analyzer Analyzer

Inputs

- Audio: Input audio object.

Widgets

Target FPS: Analysis rate. - FFT Size: Frequency resolution. - Min/Max Frequency: Frequency range to analyze.

Outputs

- Spectrum: Frequency spectrum data.

Description

Performs Fast Fourier Transform (FFT) analysis on the audio to extract frequency spectrum data for the current frame. Useful for visualizers that react to specific frequencies (bass, mids, treble).

Parameters

Widget	Type	Description
FFT Size	`Int`	Size of the FFT window (e.g., 1024, 2048). Higher = more frequency resolution but slower.
Min Frequency	`Int`	The lowest frequency to include (Hz).
Max Frequency	`Int`	The highest frequency to include (Hz).

Video To Audio Converter

Inputs

- video: The source video.

Widgets

output_format: The output audio format. - sample_rate: Target sample rate in Hz.

Outputs

- audio: The extracted audio object.

Description

Extracts the audio track from a video file and saves it as a standalone audio object. This allows you to use video soundtracks to drive audio-reactive effects.

Parameters

Widget	Type	Options	Description
output_format	`Dropdown`	`wav`, `mp3`, `flac`, `ogg`	wav is best for analysis/processing.
sample_rate	`Number`	`44100` (default)	Standard CD quality audio sample rate.