ABSTRACT
Measuring audio levels is critical in the digital domain, and displays called “meters” provide the measuring tools we need in order to ascertain audio levels. In order to know what relative volume is in the audio world, virtually all applications offer some sort of metering. Unfortunately, all meters are not measured equally. Meters come in different types, and levels of measurement, and are even different for the analog world versus the digital world. The Peak Meter, otherwise known as the PPM or Peak Programming Meter, is a standard in the digital and analog industry. Standard in that it provides accurate information about the peaks of the audio signal, but interestingly enough, there is no standard scale to the meter other than marking where the 0dB and other relevant levels exist. Analog recording/playback levels are somewhat flexible; 0dB only serves as an averaging level but does not act like a governor or anything of the sort.
