3.5

162MainStage Effects
Metering tools
MainStage Metering tools overview
You can use the Metering tools to analyze audio in a variety of ways. These plug-ins
provide different views of your audio data that extend the information shown in channel
strip meters. The Metering plug-ins have no effect on the audio signal and are intended for
use as diagnostic aids.
Each meter is specifically designed to view different characteristics of an audio signal,
making each suitable for particular studio situations. For example, MainStage BPMCounter
displays the tempo, MainStage Correlation Meter displays the phase relationship,
MainStage Loudness Meter shows the momentary, short-term, and integrated loudness
levels, and MainStage Level Meter displays the level of an incoming audio signal.
MultiMeter combines these tools and other analysis features in a single utility.
MainStage BPMCounter
BPMCounter analyzes the tempo of incoming audio in beats per minute (bpm). The
detection circuit looks for any transients, also known as impulses, in the input signal.
Transients are very fast, nonperiodic sound events in the attack portion of the signal. The
more obvious this impulse is, the easier it is for BPMCounter to detect the tempo.
Percussive drum and instrumental rhythm parts, such as basslines, are suitable for tempo
analysis, whereas pad sounds are unsuitable candidates for tempo analysis.
BPM Counter parameters
• BPMCounter: Analyzes the tempo of incoming audio in beats per minute (bpm). Click
the numerical display to reset.
The numerical display the current analysis status. If the LED is flashing, a tempo
measurement is taking place. When the LED is continuously lit, analysis is complete,
and the tempo is displayed. The measurement ranges from 80 to 160 beats per minute.
The measured value is displayed with an accuracy of one decimal place.