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การตรวจวัดเสียงความถี่ต่ำ

Low-frequency sound

Measure low frequency noise

Use a sound level meter capable of measurement over a wide frequency range (1 Hz to 20 kHz) to measure low frequency sound

Measure low frequency noise of wind power installations

Use a sound level meter with low frequency sound measurement capability and measure the low frequency noise produced by the wind turbine rotor.

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