2. Essential building measures

2.1 Measuring the transmission of impact noise levels

For impact noise, there are two variables, one measured and the other calculated.

• Standardized impact noise level [6] L _n

  Note :

  A new European standard has recently replaced the old [7] standard.

  It characterizes the value of noise transmission through a floor when excited by an impact machine, also standardized. The root-mean-square sound pressure level (L _i ) is measured in a receiving...