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

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Experimental component

This component is considered an early prototype and it is under development as it was released as an early access. Bugs and issues with this component are expected and currently it has no CUI support.

Spectrum Analyzer
foo_vis_spectrum_analyzer
Developer(s)	pqyt
Repository
Release information
Initial release
Stable release
Preview release	0.1.0.2 (November 13, 2023; 1 year ago)
foobar2000 compatibility
Architecture	x86 32-bit, x86 64-bit
Minimum version	2.0
Maximum version
UI module(s)	Default UI
Additional information
Use	Visualization
License
Discussion thread	{{{discussion_thread}}}
View all components

A recreation of Musical Spectrum component for foobar2000 v2.x and 64-bit versions.

Configuration

You can tweak the configuration by creating a foo_vis_spectrum_analyzer.json next to the foo_vis_spectrum_analyzer.dll file. The content of the file is reread at the start of a new track.

You can find the foo_vis_spectrum_analyzer.dll in your foobar2000 profile directory.

   {
       "FFTSize": 4096,
       "FrequencyDistribution": 1,
       "ScalingFunction": 1,
       "ScalingFunctionFactor": 0.0,
       "NumberOfBands": 160,
       "MinFrequency": 20,
       "MaxFrequency": 20000,
       "Bandwidth": 0.5,
       "BandsPerOctave": 12,
       "MinNote": 0,
       "MaxNote": 143,
       "Detune": 0,
       "Pitch": 440.0,
       "SummationMethod": 1,
       "SmoothingMethod": 1,
       "SmoothingFactor": 0.75,
       "XAxisMode": 3,
       "YAxisMode": 0,
       "ColorScheme": 2,
       "PeakMode": 3,
       "LogLevel": 1
   }

FFTSize: 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768

FrequencyDistribution: Determines which parameters are used to generate the frequency bands.

   0: Generate frequency bands based on the frequency parameters.
   1: Generate frequency bands based on the note parameters.
   2: Generate frequency bands used by AveePlayer.

ScalingFunction: Determines which frequency scaling function is used.

   0: Linear
   1: Logarithmic
   2: Shifted logarithmic
   3: Mel (AIMP)
   4: Bark
   5: Adjustable Bark
   6: ERB
   7: Cams
   8: Hyperbolic Sine
   9: NthRoot
   10: Negative exponential
   11: Period

NumberOfBands: Number of frequency bands to generate (2 to 512)

MinFrequency: Frequency of the first band, 0Hz to 96000Hz.

MaxFrequency: Frequency of the last band, 0Hz to 96000Hz.

Bandwidth: 0.0 to 64.0

BandsPerOctave: Number of bands per octave (1 to 48)

MinNote: Number of the first note. (C0 = 0, C1 = 12, ...), 0 to 143 (12 octaves)

MaxNote: Number of the last note. (C0 = 0, C1 = 12, ...), 0 to 143 (12 octaves)

Detune: Detuning offset (-24 to 24)

Pitch: Tuning pitch (A4 = 440.0Hz), 0Hz to 96000Hz.

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

   0: Minimum
   1: Maximum
   2: Sum
   3: RMS
   4: RMSSum
   5: Average
   6: Median

SmoothingMethod: Specifies how the spectrum will be smoothed over time.

   0: Average
   1: Peak

SmoothingFactor: Specifies the strength of the smoothing (0.0 to 1.0)

XAxisMode: Determines which X axis to display

   0: Center frequency of a band, every 10 bands.
   1: Fixed frequency range
   2: Frequency of the C note of each octave
   4: C note of each octave

YAxisMode: Determines which Y axis to display

   0: Decibel scale

ColorScheme: Specifies the color scheme used to render the spectrum.

   0: Solid color (Not configurable yet)
   1: Custom color scheme (Not implemented yet)
   2: Prism 1
   3: Prism 1
   4: Prism 1
   5: foobar2000
   6: foobar2000 Dark Mode

PeakMode: Specifies how the peak indicators are rendered.

   0: None
   1: Classic
   2: Gravity
   3: AIMP

LogLevel: Specifies the verbosity of the logging to the foobar2000 console.

   0: Trace
   1: Debug
   2: Information
   3: Warning
   4: Error
   5: Critical
   6: None

External links

• Spectrum Analyzer (foo_vis_spectrum_analyzer) on foobar2000.org
• Discussion topic on hydrogenaudio

See also

• Frequency bands spectrum analyzer using either FFT or CQT on CodePen (which this component is based on)