Octave-band centre frequency is the geometric mean of the limits, not their arithmetic mean. Thus fc=√(710×1420)=1004.0916 Hz, which rounds to 1004 Hz. The upper/lower ratio of 2 confirms a full octave.
More Surface Environment questions
GATE 2021 MN Q33– In the Battelle Environmental Evaluation System, air pollution has PIU 52. Environmental…
GATE 2021 MN Q41– A 10 mL wastewater sample is diluted to 300 mL with BOD-free water. Initial dissolved…
GATE 2021 MN Q51– CO is emitted at ground level at 25 g/s. Wind speed is 5 m/s; horizontal and vertical…
GATE 2026 MN Q53– A2.5 μm dust particle of density3600 kg/m³ settles500 m through still air of…
GATE 2026 MN Q54– A15 mL wastewater sample is diluted to300 mL and incubated for5 days at20°C. Dissolved…
GATE 2025 MN Q21– The environmental lapse-rate profiles are shown. Dry adiabatic lapse rate is−10°C/km.…