Sound

Noise control can be a critical component of an HVAC system and an important part of creating a successful building environment.

Sound is produced by vibrations that travel through the air or another medium and can be heard when they reach a person's ear.

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OMNI CRA Miami Entertainment Complex

Price Sound Attenuators

Miami Entertainment Complex is a full-service movie and TV studio complex with about 70,000 square feet of studio space, including two 15,000 square foot sound stages. The sound stages required a room NC level of 25. In order to achieve NC 25, these rooms required the use of double wall lined ductwork. Price Industries was able to add elbow sound attenuators and eliminate the double wall ductwork and replace it with single wall ductwork. Not only did this save money first cost versus the double wall ductwork, but it saved labor as the single wall ductwork was much lighter and easier to install.

The Challenge: Miami Entertainment Complex is a full-service movie and TV studio complex with about 70,000 square feet of studio space, including two 15,000 square foot sound stages. The sound stages required a room NC level of 25. In order to achieve NC 25, these rooms required the use of dou- ble wall lined ductwork. The ductwork was very large (54x42), which would be very heavy and difficult to install, especially 15 feet in the air.

The Solution: Price provided a complete engineering analysis for the designed system and we were able to add elbow sound attenuators and eliminate the double wall ductwork. We provided a total of 18 Price sound attenuators, which allowed the Con- tractor to eliminate 980 feet of double wall ductwork and install single wall ductwork and still maintain the NC 25 sound levels. Not only did this save money first cost versus the double wall ductwork, but it saved labor as the single wall ductwork was much lighter and easier to install.

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NOTES:

  • Price silencers are tested in our NVLAP-Accredited sound lab – certification is available upon request and in our AIO software.
  • Price silencers consist of ASTM A653 / A653M steel casings and perforated liners.
  • Price silencer material has flame spread classification < 25 and smoke development rating < 50 when tested in accordance with ASTM E84, UL723 and NFPA255.
  • Dynamic insertion losses are limited to 55dB due to flanking.
  • Silencer model was selected to achieve NC 25 criteria level based on octave band sound levels of 63/65/62/60/56/50/49/45/ from 63Hz to 8000Hz.
  • System effects assume Sharp Inlet at the silencer inlet and Elbow Without Vanes at the silencer outlet.
  • Performance data is derived from test values obtained in strict accordance with ASTM E477.
  • Silencer to be shipped in multiple components for assembly on site by Others.

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