Wind turbine generator noise masking method and device based on noise control technique
A wind turbine and noise technology, which is applied to measurement devices, ultrasonic/sonic/infrasonic waves, sound-generating equipment, etc., can solve problems such as unreported applications in the field of wind farm noise control, and achieve the effect of reducing subjective annoyance and reducing influence.
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[0041] The following describes in detail in conjunction with an embodiment of the patent of the present invention.
[0042] Such as figure 1 Shown, device of the present invention comprises following 5 units:
[0043] (1) The pre-acquisition unit adopts a microcomputer installed with sound acquisition software and a supporting sound card as an operation and storage device, and adopts a 1 / 2-inch pre-polarized microphone and a The matching ICCP type preamplifier is used as the front end of sound collection. When sampling, the height of the microphone from the ground is 1.5m, there is no obstruction within 1m, and there is no obvious interference sound source around.
[0044] After sampling, use acoustic software such as Artemis or reputation to analyze the frequency spectrum of the collected sound samples. For the typical natural wind sound samples in residential quarters, the analysis time is set to 3s, and for the typical wind turbine noise samples in residential quarters, ...
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