How Does It Work?#

Spectrum Analyzer shows the frequency content of one or two incoming signals on a logarithmic frequency display, with averaging, peak hold, reference capture, adjustable frequency and dB ranges, and selectable color themes.

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Quick Overview#

• Two monitor inputs: A and B.
• Overlay modes for A, B, or A+B.
• Reference trace can be hidden, shown, or captured from the current view.
• The display range is adjustable in both frequency and dB.

Inputs#

Port	Type	What It Does
A	Multi	First analyzed input.
B	Multi	Second analyzed input.

Spectrum Analyzer has no outputs. It is analysis-only.

Display And Routing Controls#

Control	Values	Default	Behavior
LIVE/HOLD	LIVE, HOLD	LIVE	Freezes or resumes the incoming analysis.
GRID	Off, On	On	Shows or hides frequency and dB guides.
FILL	Off, On	On	Toggles filled spectrum shading under the trace.
PEAK	Off, On	On	Shows or hides peak-hold traces.
A / B / A+B	3 overlay modes	A+B	Chooses which input traces are visible.
REF OFF	Off	Off	Clears and hides the reference trace.
SHOW	On	Off	Shows the saved reference trace.
CAP	Capture	Off	Captures the current displayed trace as the new reference.
FFT	1K, 2K, 4K	2K	Selects FFT size.
FPS	30, 45, 60, 90, 120	60	Sets display refresh rate.
THEME	1..6	1	Cycles through the available analyzer themes.

Knob Controls#

Control	Range	Default	Behavior
AVG	0..1	0.72	Smooths the spectrum over time.
DECAY	0.1..30	8	Sets how quickly the peak-hold trace falls.
TILT	-12..12	0	Applies display tilt compensation in dB.
GAIN	-24..24	0	Adds display gain compensation before plotting.
LO Hz	10..2000	20	Sets the low end of the visible frequency range.
HI Hz	1000..24000	20000	Sets the high end of the visible frequency range.
FLOOR	-120..-24	-96	Sets the bottom of the visible dB range.
CEIL	-24..12	0	Sets the top of the visible dB range.

Reference Trace Notes#

• CAP stores the current displayed selection as the reference trace.
• SHOW overlays that saved trace on top of the live display.
• REF OFF clears the saved reference.

Typical Uses#

• Compare two oscillators or two processing stages with A+B.
• Capture a target tonal balance, then match against it with SHOW.
• Narrow the frequency and dB ranges to focus on one problem area in a patch.