Foobar2000:Components/Spectrum Analyzer (foo vis spectrum analyzer)

2024-04-09T18:20:02Z

Andrej0904:

{{infobox foobar2000 component
| name = Spectrum Analyzer
| screenshot = [[File:Spectrum_Analyzer.png|256px]]
| caption =
| module_name = foo_vis_spectrum_analyzer
| developer = {{ha user|u=67884|name=pqyt}}
| repository = [https://github.com/stuerp/foo_vis_spectrum_analyzer Github]
| released =
| released_ref =
| stable_release = 0.6.0.3
| stable_release_date = {{start date and age|2024|01|13}}
| preview_release = 0.1.0.0
| preview_release_date = {{start date and age|2023|11|12}}
| foobar2000_architecture = x86 32-bit, x86 64-bit
| foobar2000_minimum = 2.0
| foobar2000_maximum =
| foobar2000_legacy = false
| foobar2000_ui_module = Default UI
| use = Visualization
| license =
}}
A recreation of [[foobar2000:Components/Musical Spectrum (foo_musical_spectrum)|Musical Spectrum]] component for foobar2000 v2.x and 64-bit versions. '''Windows 10''' or higher only!

You can double-click the component window to switch between windowed and full-screen mode.

== Configuration ==

[[File:foo_vis_spectrum_analyzer_transform.png|thumb|256px|Spectrum Analyzer Configuration: Transform]]
[[File:foo_vis_spectrum_analyzer_spectrum.png|thumb|256px|Spectrum Analyzer Configuration: Spectrum]]
Right-click on the component window to display the context menu.

Select '''Configure''' from the context menu to open the configuration dialog.

=== Transform ===

'''Method'''

Allows you to select the Time to Frequency domain transform. Currently Fast Fourier (FFT) and Constant-Q (CQT) transforms are implemented.

'''Window Function'''

Selects the window function that will be applied to the Time data.

'''Window Parameter'''

Allows you to tweak window functions that support a parameter.

'''Window Skew'''

Skew factor for the window function.

'''Channels'''

Allows you to select that audio channels that will be used to calculate the transform.

=== FFT ===

Groups the parameters that influence the Fast Fourier transform.

'''FFT Size'''

Specifies the size of the FFT window as a number between 64 and 32768.

Select ''Custom'' to specify a number that is not a power of 2. This will consume a lot more CPU power.
Select ''Sample rate based'' to specify the size as a duration. F.e. 100ms of a track sampled at 44.1kHz will result in an FFT window of 4410 samples.

'''Summation'''

Determines which method is used to sum the coefficients of FFT.

Minimum
Maximum
Sum
Residual Mean Square (RMS)
RMS Sum
Average
Median

'''Smooth lower frequencies'''

'''Smooth gain transition'''

'''Lanczos kernel'''

Determines the size of the Lanczos kernel. The kernel is used to create a smooth transition between the FFT coefficients resulting in a visual pleasing result.

=== Frequencies ===

Groups the parameters that determine the frequency range that will be displayed.

'''Distribution'''

Determines which parameters are used to generate the frequency bands.

Linear: Generate frequency bands based on the frequency parameters.
Octaves: Generate frequency bands based on the note parameters.
AveePlayer: Generate frequency bands used by AveePlayer.

'''No. of bands'''

Specifies the number of frequency bands to generate (2 to 512) in the specified frequency range.

'''Frequency range'''

Frequency of the first and last band, 1Hz to 96000Hz.

'''Note range'''

Available when selecting the ''Octaves'' distribution. Select a range between the C note of octave 0 and B# of octave 11 (max. 144 notes or 12 octaves)

'''Bands per octave'''

Number of bands per octave (1 to 48)

'''Pitch'''

Tuning pitch (A4 = 440.0Hz), 1Hz to 96000Hz.

'''Transpose'''

Detuning offset (-24 to 24)

'''Scaling'''

Determines which frequency scaling function is used.

Linear
Logarithmic
Shifted logarithmic
Mel (AIMP)
Bark
Adjustable Bark
ERB
Cams
Hyperbolic Sine
Nth Root
Negative exponential
Period

'''Skew factor'''

'''Bandwidth'''

Determines the width of a frequency band. (0.0 to 64.0)

=== X axis ===

Groups the parameters that determine the way the X axis is displayed.

'''Mode'''

Determines which X axis to display.

None: Hides the X axis.
Bands: Center frequency of a band, every 10 bands.
Decades: Fixed frequency range
Octaves: Frequency of the C note of each octave
Notes: C note of each octave

=== Y axis ===

Groups the parameters that determine the way the Y axis is displayed.

'''Mode'''

Determines which Y axis to display.

Note: Hides the Y axis
Decibel scale
Logarithmic

'''Amplitude range'''

Determines the minimum and maximum amplitude, expressed in decibel (dB), to display.

'''Amplitude step'''

Determine the step size between the min. and max. amplitude.

'''Use absolute'''

'''Gamma'''

=== Bands ===

'''Color scheme'''

Specifies the color scheme used to render the spectrum.

Solid color
Custom
Prism 1
Prism 2
Prism 3
foobar2000
foobar2000 Dark Mode
Fire

Double-click a color to modify it. Modifying a color automatically selects the Custom color scheme. Press the ''Add' button to add a color, ''Remove'' to remove a color, ''Reverse'' to reverse the color scheme.

'''Band background'''

Enable the check box to see a background behind every band of the spectrum.

'''Tooltips'''

Enable the check box to see a tooltip with the center frequency and when appropriate, the name of the note, of the frequency band.

'''Smoothing'''

Specifies how the spectrum will be smoothed over time.

Average
Peak

'''Smoothing factor'''

Specifies the strength of the smoothing (0.0 to 1.0)

'''Peak mode'''

Specifies how the peak indicators are rendered.

None
Classic
Gravity
AIMP
Fade Out

'''Hold time'''

Specifies how long a peak value will be held steady.

'''Acceleration'''

Specifies the acceleration used to modify the peak value.

=== Colors ===

Click any of the colors to modify.

== External links ==
* {{foobar2000|https://www.foobar2000.org/components/view/foo_vis_spectrum_analyzer|Spectrum Analyzer (foo_vis_spectrum_analyzer)}}
* {{ha|https://hydrogenaud.io/index.php/topic,125031.0.html}}
== See also ==
* [https://codepen.io/TF3RDL/pen/poQJwRW Frequency bands spectrum analyzer using either FFT or CQT] on CodePen (which this component is based on)

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Foobar2000:Components/Spectrum Analyzer (foo vis spectrum analyzer)