10.6

159Logic Pro Effects
Metering tools
Logic Pro 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, Logic Pro
BPM Counter
displays the tempo, Logic Pro Correlation Meter displays the phase relationship, Logic Pro
Loudness Meter shows the momentary, short-term, and integrated loudness levels, and
Logic Pro Level Meter displays the level of an incoming audio signal. MultiMeter combines
these tools and other analysis features in a single utility.
Logic Pro 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.