Adjust the sound masking at each commissioning location to conform to the sound masking curve and overall volume for that location, such that: The volume in each third-octave band from 100 Hz and 5000 Hz inclusive is within plus or minus two decibels (+/- 2 dB) of the target band level. Unless existing conditions exceed the maximum limit for the band. The overall volume is within plus or minus one half decibel (+/- 0.5 dBA) of the target overall volume. Unless existing conditions cause overall volume to exceed tolerances. If the sound masking curve and overall volume requirements are not met at a commissioning location, modify the system design, installation or commissioning, at the supplier’s expense, until conformance is achieved. Unless deviation can be shown to be due to existing conditions. Provide an electronic report of testing and commissioning data, including: Floorplan(s) showing all commissioning locations with ID references and local control zones. A table and graph of commissioned sound masking measurements for each commissioning location, including: Third-octave levels for bands within the sound masking curve. Overall volume level. The sound masking curve, overall volume and tolerances specified for that location. Explanation of any sound masking measurements which exceed tolerances for the sound masking curve or overall volume with a table and graph of existing conditions measurements for each such commissioning location, including: Third-octave levels for bands within the sound masking curve. Overall volume level. CLEANING AND WASTE MANAGEMENT Remove empty packaging and other material waste. Clean system components where required. CLOSEOUT ACTIVITIES Demonstrate operational system to Owner representative. Review closeout submittals with Owner representative. Train Owner representative to maintain system and use any occupant controls or interfaces, as required. Review service and support contacts. ATTACHMENTS [Spec Note: Delete if no system design schematic attached.] System Design Schematic: Schematics of the system design on a floor plan showing the quantity and location of speakers and the size and location of local control zones. END OF SECTION
Adjust the sound masking at each commissioning location to conform to the sound masking curve and overall volume for that location, such that: The volume in each third-octave band from 100 Hz and 5000 Hz inclusive is within plus or minus two decibels (+/- 2 dB) of the target band level. Unless existing conditions exceed the maximum limit for the band. The overall volume is within plus or minus one half decibel (+/- 0.5 dBA) of the target overall volume. Unless existing conditions cause overall volume to exceed tolerances. If the sound masking curve and overall volume requirements are not met at a commissioning location, modify the system design, installation or commissioning, at the supplier’s expense, until conformance is achieved. Unless deviation can be shown to be due to existing conditions. Provide an electronic report of testing and commissioning data, including: Floorplan(s) showing all commissioning locations with ID references and local control zones. A table and graph of commissioned sound masking measurements for each commissioning location, including: Third-octave levels for bands within the sound masking curve. Overall volume level. The sound masking curve, overall volume and tolerances specified for that location. Explanation of any sound masking measurements which exceed tolerances for the sound masking curve or overall volume with a table and graph of existing conditions measurements for each such commissioning location, including: Third-octave levels for bands within the sound masking curve. Overall volume level. CLEANING AND WASTE MANAGEMENT Remove empty packaging and other material waste. Clean system components where required. CLOSEOUT ACTIVITIES Demonstrate operational system to Owner representative. Review closeout submittals with Owner representative. Train Owner representative to maintain system and use any occupant controls or interfaces, as required. Review service and support contacts. ATTACHMENTS [Spec Note: Delete if no system design schematic attached.] System Design Schematic: Schematics of the system design on a floor plan showing the quantity and location of speakers and the size and location of local control zones. END OF SECTION
2_LogiSon-Sound-Masking-3-Part-Specification-CSC-Format.docx