Foobar2000:Components/Musical Spectrum (foo musical spectrum)

Musical Spectrum
Developer(s)	fismineur
Repository
Release information
Initial release	October 10, 2012
Stable release
Preview release	0.9.1 (November 21, 2012)
foobar2000 compatibility
Architecture	{{{foobar2000_architecture}}}
Minimum version	TBC
Maximum version	{{{foobar2000_maximum}}}
UI module(s)	Default UI, Columns UI
Additional information
Use	Visualization
License
Discussion thread	{{{discussion_thread}}}
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A spectrum analyzer visualisation which measures and displays frequencies corresponding to musical notes (eg. A4 = 440Hz). Compatible with the default user interface and Columns UI.

This component is no longer being updated in favor of a successor called Sb-sDFT (foo_sb_sdft) that doesn't use FFT and instead makes use of sliding DFT to calculate constant-Q transform.

Options

Spectrum Options window.

The following options can be accessed by right-clicking the spectrum and selecting "Options".

Processing

Notes

Increase or decrease the visible notes, from C0 (16.35 Hz) to A11 (56.32 kHz).

Default: A1 - C9

Amplitude

Set the visible amplitude, from -80dB to 80dB.

Default: -60dB - 0dB

Channels

Select any number of 18 available input channels.

Default: All Channels

Interval

Set the FFT hop size in milliseconds, frame rate is inversely proportional to Interval parameter.

Default: 25 milliseconds

FFT size

Set the FFT (fast Fourier transform) size, from 1,024 samples to 32,768 samples. It doesn't have to be a power of two.

Default: 8,192 samples

Pitch (A4)

Set the frequency for A4. To maintain accuracy, this should be set to 440 Hz.

Default: 440 Hz

Transpose

The number of semitones by which to transpose the visible notes, from -12 to 12.

Default: 0 semitones

Peaks

Hold time

Set the amount of time in milliseconds (ms) before the peak drops.

Default: 500 ms

Gravity

Set the speed at which the peaks drop.

Default: 50 dB/s²

External links

• Discussion topic on hydrogenaudio
• foo_musical_spectrum.zip (0.9.1)