Adobe premiere pro cs 6- About audio level

About audio level

The scale on the audio meters is decibels, denoted by db.The decibel scale is a little unusual in that the highest volume is designated as 0.lower volume become larger and larger negative number until they reach negative infinity.
If a record sound is too quiet, it might  get lost in the background noise.Background noise might be environment ,such as an air- coditioning system making a hum.It also might be system noise,such as the quiet hiss you hear from your speakers no sound is playing.