6.13 Spectrum Analyzer

Spectrum Analyzer in 1.2 and earlier
Spectrum Analyzer
This plugin visualizes the frequencies present in the signal it monitors.
Graph
X axis: shows frequencies from 20 Hz to 20,000 Hz, divided into octaves (this makes the X axis appear nonlinear).
Y axis: shows amplitude from 40 dB to -60 dB (displayed linearly with respect to decibels).
Buttons
Linear Spectrum: toggles linear display of frequencies (rather than by octaves).
Linear Y axis: toggles linear display of amplitude (rather than by decibels).
Spectrum Analyzer in 1.3 and later
Spectrum Analyzer
Buttons
Waterfall:
Averaging: enables averaging of display frames.
Stereo: enables the display of LR channels independently, with the Left channel represented by Blue and the Right channel by Red.
Peak hold: enables a "ghost" line that shows the peaks of the spectrum.
Pause/Play button: enables/disables the plugin.
Snowflake: freezes plugin display (along with the data displayed).
Drop-down Menus
Frequency Range 
: alters the range of displayed frequencies.
Amplitude Range 
: alters the range of displayed amplitude.
FFT Block Size 
 : alters the frequency resolution of the display (Higher resolutions come at the cost of FPS).
FFT Window Type 
 : changes algorithm used to remove FFT-related noise. 
Blackmann-Harris displays the least noise but has low frequency resolution.
Rectangular displays the most noise but has high frequency resolution.
Graph
X axis: shows frequencies based on the Frequency range drop-down menu.
Y axis: shows amplitude based on the Amplitude range drop-down menu.
Clicking in the spectrum/waterfall display adds a ruler/cursor with value readouts.
Advanced
Envelope Res: alters the resolution of the Peak envelope ("Peak Hold").
Spectrum Res: alters the resolution of the display curve with fill-in color. 
Falloff Factor: alters the speed at which the peak envelope ("Peak Hold") falls to zero.
Averaging Weight: alters how the display curve reacts to new samples.
High value: fast reaction, low jitter reduction. enables real-time spectrogram.
Low value: slow reaction, high jitter reduction.
Waterfall Height: alters the time range, or the amount of temporarily stored frames, of displayed frequencies in the Waterfall display.
Waterfall Gamma: alters the amount of gamma correction in the Waterfall display.
Window Overlap: alters how many times each FFT sample is processed (higher values can help improve FPS).
Zero Padding: improves resolution when using a smaller FFT Block size, at the cost of performance.
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6.12 ReverbSC

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6.14 Stereo Matrix

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Outline

Spectrum Analyzer in 1.2 and earlier

Graph

Buttons

Spectrum Analyzer in 1.3 and later