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 unit fraction is a fraction with a numerator of 1 (for example, , , ,). The definition of a unit fraction is to take one unit and divide it into n equal pieces. One of these smaller pieces is the amount represented by the unit fraction. The fraction can represent the quotient of m and n or m Ã· n.