03 · Sweeps

Effect-of sweeps

69 comparisons, each a set of tests that differ in exactly one factor, derived from the test attributes by analyse_acoustics.py. Thumbnails share one R axis (−5 to 62 dB) so the grid reads as a whole; open any sweep for the full chart, T60, absorption and ratings.

01Insulation

Same panel and MLV state, insulation product varied.

No Panel, No MLV

n=7 · Rw 7–18 dB

Plasterboard 12 mm Hexagon, No MLV

n=6 · Rw 8–25 dB

Plasterboard 12 mm Round, No MLV

n=6 · Rw 7–25 dB

Plasterboard 12 mm Square, No MLV

n=2 · Rw 7–13 dB

Plasterboard 15 mm Round, No MLV

n=5 · Rw 7–23 dB

Plasterboard 6 mm Round (Reversed), MLV

n=2 · Rw 29–31 dB

Plasterboard 6 mm Round (Reversed), No MLV

n=2 · Rw 14–19 dB

Plasterboard 6 mm Round, No MLV

n=6 · Rw 5–19 dB

Plasterboard Non-Perforated (10 mm), No MLV

n=2 · Rw 23–34 dB

Plasterboard Slots, No MLV

n=6 · Rw 9–25 dB

Sheet Metal 1.6 mm Round, No MLV

n=4 · Rw 1–17 dB

Sheet Metal 2.38 mm Round, No MLV

n=4 · Rw 1–17 dB

02Hole Shape

Same material, insulation and MLV, perforation geometry varied.

Plasterboard, Glass Wool 100 mm R5, No MLV

n=5 · Rw 12–18 dB

Plasterboard, Glass Wool 175 mm R3.5, No MLV

n=4 · Rw 14–20 dB

Plasterboard, Glass Wool 45 mm R2.5, No MLV

n=6 · Rw 10–15 dB

Plasterboard, Glass Wool 90 mm R2.5, MLV

n=4 · Rw 30–36 dB

Plasterboard, Glass Wool 90 mm R2.5, No MLV

n=5 · Rw 14–20 dB

Plasterboard, Glass Wool 90 mm R2.7, No MLV

n=5 · Rw 19–34 dB

Plasterboard, No Insulation, No MLV

n=9 · Rw 3–29 dB

03Hole Diameter

Round perforations only, hole diameter varied.

Plasterboard Round, Glass Wool 100 mm R5, No MLV

n=3 · Rw 12–17 dB

Plasterboard Round, Glass Wool 175 mm R3.5, No MLV

n=2 · Rw 14–19 dB

Plasterboard Round, Glass Wool 45 mm R2.5, No MLV

n=3 · Rw 10–14 dB

Plasterboard Round, Glass Wool 90 mm R2.5, MLV

n=2 · Rw 30–36 dB

Plasterboard Round, Glass Wool 90 mm R2.5, No MLV

n=3 · Rw 14–19 dB

Plasterboard Round, Glass Wool 90 mm R2.7, No MLV

n=2 · Rw 19–23 dB

Plasterboard Round, No Insulation, No MLV

n=4 · Rw 3–7 dB

Sheet Metal Round, Glass Wool 45 mm R2.5, No MLV

n=2 · Rw 7–7 dB

Sheet Metal Round, Glass Wool 90 mm R2.5, MLV

n=2 · Rw 29–29 dB

Sheet Metal Round, Glass Wool 90 mm R2.5, No MLV

n=2 · Rw 12–12 dB

Sheet Metal Round, Glass Wool 90 mm R2.7, No MLV

n=2 · Rw 17–17 dB

Sheet Metal Round, No Insulation, No MLV

n=2 · Rw 1–1 dB

04Scrim

The same perforated board with and without its scrim backing.

Plasterboard 12 mm Round, No Insulation, No MLV

n=2 · Rw 3–7 dB

05MLV

Same build with and without the mass-loaded vinyl layer.

Plasterboard 12 mm Hexagon, Glass Wool 90 mm R2.5

n=2 · Rw 20–36 dB

Plasterboard 15 mm Round, Glass Wool 90 mm R2.5

n=2 · Rw 19–36 dB

Plasterboard 6 mm Round (Reversed), Glass Wool 90 mm R2.5

n=2 · Rw 14–29 dB

Plasterboard 6 mm Round (Reversed), Glass Wool 90 mm R2.7

n=2 · Rw 19–31 dB

Plasterboard 6 mm Round, Glass Wool 90 mm R2.5

n=2 · Rw 14–30 dB

Sheet Metal 1.6 mm Round, Glass Wool 90 mm R2.5

n=2 · Rw 12–29 dB

Sheet Metal 2.38 mm Round, Glass Wool 90 mm R2.5

n=2 · Rw 12–29 dB

06Orientation

Assembly turned around in the opening: plaster facing source or receiver.

Plasterboard 6 mm Round, Glass Wool 90 mm R2.5, MLV

n=2 · Rw 29–30 dB

Plasterboard 6 mm Round, Glass Wool 90 mm R2.5, No MLV

n=2 · Rw 14–14 dB

Plasterboard 6 mm Round, Glass Wool 90 mm R2.5

n=4 · Rw 14–30 dB

Plasterboard 6 mm Round, Glass Wool 90 mm R2.7, No MLV

n=2 · Rw 19–19 dB

Plasterboard 6 mm Round, Glass Wool 90 mm R2.7

n=3 · Rw 19–31 dB

07Baseline

Every bare panel, no insulation, no MLV.

All Panels, No Insulation, No MLV

n=11 · Rw 1–29 dB

08Flow Resistivity

Insulation sweeps keyed on measured airflow resistivity.

No Panel, No MLV

n=7 · Rw 7–18 dB

Plasterboard 12 mm Hexagon, No MLV

n=6 · Rw 8–25 dB

Plasterboard 12 mm Round, No MLV

n=6 · Rw 7–25 dB

Plasterboard 15 mm Round, No MLV

n=5 · Rw 7–23 dB

Plasterboard 6 mm Round (Reversed), MLV

n=2 · Rw 29–31 dB

Plasterboard 6 mm Round (Reversed), No MLV

n=2 · Rw 14–19 dB

Plasterboard 6 mm Round, No MLV

n=6 · Rw 5–19 dB

Plasterboard Slots, No MLV

n=6 · Rw 9–25 dB

Sheet Metal 1.6 mm Round, No MLV

n=4 · Rw 1–17 dB

Sheet Metal 2.38 mm Round, No MLV

n=4 · Rw 1–17 dB

09Open Area

Panel sweeps keyed on measured percentage open area.

Plasterboard, Glass Wool 100 mm R5, No MLV

n=5 · Rw 12–18 dB

Plasterboard, Glass Wool 175 mm R3.5, No MLV

n=4 · Rw 14–20 dB

Plasterboard, Glass Wool 45 mm R2.5, No MLV

n=6 · Rw 10–15 dB

Plasterboard, Glass Wool 90 mm R2.5, MLV

n=4 · Rw 30–36 dB

Plasterboard, Glass Wool 90 mm R2.5, No MLV

n=5 · Rw 14–20 dB

Plasterboard, Glass Wool 90 mm R2.7, No MLV

n=5 · Rw 19–34 dB

Plasterboard, No Insulation, No MLV

n=9 · Rw 3–29 dB

Sheet Metal, Glass Wool 45 mm R2.5, No MLV

n=2 · Rw 7–7 dB

Sheet Metal, Glass Wool 90 mm R2.5, MLV

n=2 · Rw 29–29 dB

Sheet Metal, Glass Wool 90 mm R2.5, No MLV

n=2 · Rw 12–12 dB

Sheet Metal, Glass Wool 90 mm R2.7, No MLV

n=2 · Rw 17–17 dB

Sheet Metal, No Insulation, No MLV

n=2 · Rw 1–1 dB

10Repeatability

The same build measured twice on different days.

Plasterboard 12 mm Round, No Insulation, No MLV

n=2 · Rw 7–8 dB

Plasterboard Non-Perforated (10 mm), No Insulation, No MLV

n=2 · Rw 23–24 dB