- Nov 30, 2006
- Hickory, MS
I've killed way too many brain cells over the decades designing and thinking about meters. I even made one 100 segment vacuum fluorescent meter back in the 80s but even that one used 1 dB steps. I was an active proponent of simultaneous peak/VU metering so by using a evenly spaced dB scales one can impute the crest factor (ratio of peak to average) by inspection. The number of LEDs between peak and VU, times dB per step gives you the crest factor.It's been too many years, but I seem to recall the Otari Concept One desk meters had 1/4 dB steps just above and below 0 VU.
For any challenged by lining up (zeroing) a console with coarse LED meters, you can add resolution to any step size meter by alternating between two precise level audio input signals. For example say you alternate between an exactly 0VU reference tone, and one that is say 0.1dB quieter. You could then calibrate the LED meter to light when the 0VU signal is present, and not light for signal 0.1 dB below 0VU.