Confidence votes 978. The range of 60-70 decibels sound pressure level is about as loud as normal conversation in 1 meter distance. The distance from the ears to the sound source is very important to the value of the SPL.
A fraction (from Latin fractus, broken) represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight-fifths, three-quarters.
A fraction is a number expressed in the form of $\frac{a}{b}$, where the numerator 'a' signifies the number of parts it has, and the denominator 'b' is the number of parts the whole is divided into. There are three types of fractions: Proper fractions. Improper fractions.