Exploring Downdraft Choir Risers

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  • This is a comparison of the different speeds/volumes of the filter system to ambient sound in the room with a decibel meter.
  • Using smoke to examine airflow (Patent: US 11988410B2 & US 12560345).
  • This is how I enclose the
  • Pinched fingers! Watch out - these
  • elix Portable

In-Depth Information on Downdraft Choir Risers

Patent: US 11988410B2 & US 12560345 This design improves the air exchange where singers rehearse and perform. This demonstration moves the smoke toward the This design helps remove and filter aerosol generated by singers during US Patent 11988410B2 & 12560345.

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