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DPF Framework 2026 R1

sound:compute power spectral density

Last update: 31.07.2026

Version: 0.0.0

Description

Compute the Power Spectral Density (PSD) of a signal. If the signal's unit is Unit, then the PSD's unit is Unit^2 / Hz.

Inputs

Input Name Expected type(s) Description
Pin 0
Required
input_signal field Input signal for PSD computation.
Pin 1
Required
window_type string The window used for the FFT computation, as a string.

Supported values are:

* BLACKMAN
* FLATTOP
* GAUSS
* HAMMING
* HANN
* RECTANGULAR
* TRIANGULAR

If no parameter is specified, the default value is 'HANN'.
Pin 2
Required
window_length int32 Length of the analysis window in number of samples.
Pin 3
Required
fft_size int32 FFT size in number of samples, must be a power of 2. Should be equal to or greater than window_length.
Pin 4
Required
overlap double Proportion of each window that overlaps with the next, must be in the range [0.0, 1.0[.

Outputs

Output Name Expected type(s) Description
Pin 0 output_signal field One-sided PSD of the input signal, in Unit^2/Hz.

Configurations

Name Expected type(s) Default value Description
mutex bool false If this option is set to true, the shared memory is prevented from being simultaneously accessed by multiple threads.

Scripting

Category: sound

Plugin: sound

Scripting name: None

Full name: None

Internal name: compute_power_spectral_density

License: avrxp_snd_level1

Changelog

  • Version 0.0.0: Initial release.

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