ISO 10052 Acoustics - Field Measurements of Airborne and Impact Sound Insulation and Service Equipment Noise - Research Method

The standard “ISO 10052 Acoustics - Field measurements of airborne and impact sound insulation and service equipment sound - Research method” developed by the International Organization for Standardization (ISO) describes field research methods for the following measurements:

• Airborne sound insulation between rooms
• Impact sound insulation of floors
• Airborne sound insulation of facades
• Sound pressure levels in rooms caused by service equipment

The methods described in this standard are valid for measurements in residential rooms or rooms of similar size with a maximum volume of 150 m3.

For airborne sound insulation, impact sound insulation and façade sound insulation the method gives frequency-dependent values ​​(octave band). These can be converted into a single number characterising the acoustic performances by application of the standard ISO 717-1 Acoustics - Rating of sound insulation in buildings and building elements - Part 1: Airborne sound insulation" and the standard ISO 717-2 Acoustics - Rating of sound insulation in buildings and building elements - Part 2: Impact sound insulation". The results for heavy/soft impact sound insulation are additionally given as an “A”-weighted maximum impact sound pressure level. The results for service equipment sound are given directly as an “A”- or “C”-weighted sound pressure level.

For the purposes of this standard,

• The average sound pressure level is ten times the logarithm to the base 10 of the ratio of the square of the sound pressure in a room to the square of the reference sound pressure. The space average is taken for the entire room, excluding those parts where the direct radiation of a sound source or the near field of boundaries (walls, etc.) has a significant effect.
• Level difference refers to the difference in space and time average sound pressure levels produced by a sound source in two rooms.
• The reverberation index is the ratio of the actual reverberation time of the receiving room to the reference reverberation time, times the logarithm to the base 10. It is expressed in decibels.
• The standardized level difference is the level difference corresponding to the reference value of the reverberation time in the receiving room.
• The normalized level difference corresponds to the reference absorption area in the receiving room.
• The apparent sound reduction index is ten times the logarithm to the base 10 of the ratio of the sound power incident on the tested partition to the total sound power transmitted to the receiving room (in addition to the sound power transmitted through the separation element).
• The impact sound pressure level is the average sound pressure level in the receiving room when the tested floor is excited by the standardized percussion machine. It is expressed in decibels.
• The standardized impact sound pressure level is reduced by the reverberation index and expressed in decibels.
• The normalized impact sound pressure level is ten times the logarithm to the base 10 of the ratio between the reference equivalent absorption area and the actual equivalent sound absorption area of ​​the receiving room. The actual equivalent absorption area is calculated from the reverberation index, the reference reverberation time and the room volume.
• The heavy/soft impact source is the standard impact sound source for measuring heavy/soft impact sound in residential buildings, such as children running and jumping or adults walking. The ISO 10140-5 and ISO 16283-2 standards should be taken into account in this regard.
• Maximum impact sound pressure level is the impact sound pressure level measured by rapid time weighting at the receiver points when the heavy/soft impact source hits the ground.
• The mean sound pressure level is ten times the logarithm to the base 10 of the ratio of the square of the surface and time average of the sound pressure to the square of the reference sound pressure at a test surface. The surface average is taken over the entire test surface, including the effects of reflection from the test specimen and the facade.
• Facade level difference is the difference between the external sound pressure level 2 m in front of the façade and the space and time averaged sound pressure level in the receiving room.
• The standardized façade level difference is the façade level difference corresponding to the reference value of the reverberation time in the receiving room.
• The normalized facade level difference is the facade level difference corresponding to the reference equivalent absorption area in the receiving room.
• The service equipment sound pressure level is the average sound pressure level in the room obtained and calculated by the procedure described in this standard.
• The standardized service equipment sound pressure level is the sound pressure level corresponding to the reference reverberation time in the receiving room.
• The normalized service equipment sound pressure level is the service equipment sound pressure level corresponding to the reference equivalent absorption area in the receiving room.

Among the numerous tests, measurements, analyses and evaluation studies that our organization has carried out for businesses in various sectors, our organization also provides testing services defined in the “ISO 10052 Acoustics - Field measurements of air and impact sound insulation and service equipment sound - Research method” standard with its trained and expert staff and advanced technological equipment.