
Sound Insulation Testing
Airborne sound insulation tests:
- The sound source i.e. loudspeaker is placed in source room. The loudspeaker
is set up such that it generates sound with equal energy over a range
of frequencies, known as pink noise.
- Using our UKAS calibrated Type 1 integrating sound level meters the
sound field in both the source and receiving room is measured, usually
in third octave bands over the frequency range 100 to 3.15 KHz (although
measurements over a wider range of frequencies can be made).
- After the application of the appropriate corrections a level difference
between the two rooms is then calculated. The level difference calculated
within each third octave band are then used to calculate a weighted single
number value. If appropriate, a spectrum adaptation term may also be
included within the final result.
Impact sound insulation tests:
- A standardised tapping machine is placed directly onto the floor structure
of the source (upper) room and is set to produce a continuous series
of rapid impacts.
- The sound pressure level within the receiving (lower) room is then
measured, usually in third octave bands over the frequency range 100
Hz to 3.15 KHz.
- After the appropriate corrections have been applied the levels measured
within the different third octave bands are used to calculate a weighted
single number value, which give measure of the impact sound insulation
over the entire frequency range.
Registered number:2115117(Wales) - Directors:SE Westgate MPhil BSc MCIOB, PT Westgate BSc DipMinEng