Chapter 9 Using The Spectrum Analyzer; Basic Configuration And Operation - Roland VM-C7100 Owner's Manual

Chapter 9 Using the Spectrum Analyzer

This system provides a built-in spectrum analyzer with which you can measure the
frequency content of audio signals. This spectrum analyzer—referred to simply as
the "analyzer" for the remainder of this chapter—divides input signals into narrow
frequency bands and displays the momentary level of each band on a graph in real
time. This allows you to visually inspect the frequency content of signals and the
acoustic space in which you're working, and to see how accurately your stage-
speaker system or control-room monitoring system is reproducing the entire
frequency spectrum. This can also help you pinpoint problem frequency ranges that
may be causing feedback during a live performance.

Basic Configuration and Operation

Press [ANALYZER/OSC/GEN] to call up the ANALYZER screen (VIEW page).
fig.09-01
Analyzer-related settings are made primarily from this screen. The individual
parameters can be selected using [PAGE UP] or [PAGE DOWN].
The relationship between the analyzer and internal effects
The analyzer operates by using a pair of general-purpose signal-processing
circuits—effect circuits 1/2, 3/4, 5/6 or 7/8. In an unexpanded system in which only
the factory-installed effects exist, the internal effects are disabled when the
ANALYZER screen is displayed since the analyzer must use Effects 1 and 2, the only
available general-purpose effect circuits.
When one or more optional VS8F-2 Effect Expansion Boards are installed, you can
specify the pair of effect circuits to be used by the analyzer. Since Effects 1 and 2 can
be routed to more locations than other effects, it's recommended that you allocate
other effects for analyzer use (p. 110).
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Master effects use their
own circuitry and are
therefore available even
when the analyzer is active.