SignalTools Meter Types

Clicking the meter types button lets you choose the type of metering you want to use. Each meter type has a different metering scale and response.

 

SignalTools level meter types button

Peak

(Default meter type) Uses the metering scale in EQ III and Dynamics III plug-ins.

RMS

(Root Mean Square) was used in previous versions of the Avid SurroundScope plug-in and uses the same “true” RMS metering scale.

The “true” RMS meter scale is not the same as the AES 17 RMS scale. For a sine wave with a peak value of –20 dBFS, the “true” RMS meter will show a value of –23 dBFS. (The same sine wave will show a value of –20 dBFS on an AES 17 RMS meter.‚

Peak + RMS

Uses a multi-color display to show both types of metering. Peak metering is shown in conventional green color, while RMS metering is shown in blue.

VU

(Volume Unit) Uses AES standards for signal level indication.

BBC

Uses IEC-IIa standards for signal level indication. This style of metering suppresses short duration peaks that would not affect broadcast program material. Reference calibration (4 dB) is –18 dBFS.

Nordic

Uses IEC Type I standards for signal level indication and provides greater resolution for readings between –10 dBu and +4 dBu. Reference calibration (0 dB) is –18 dBFS.

DIN

Uses IEC Type I standards for signal level indication and provides greater resolution for readings between –10 dBu and +5 dBu. Reference calibration (–9 dB) is –18 dBFS.

VENUE

Provides Peak metering behavior with a meter scale calibrated specifically for VENUE systems. Reference calibration (0 dB) is –20 dBFS.

Meter values are always displayed on control surfaces in dBFS values, regardless of the Meter Type setting.