Wind turbine noise masking
AssigneeVestas Wind Systems A/S
InventorErik Sloth
Life of this patent
Estimating the term…
Abstract
A method of masking wind turbine noise from a wind turbine Masking noise is generated to produce resultant noise with a modulation depth which is less than a modulation depth of the wind turbine noise and an average level which is greater than an average level of the wind turbine noise. The masking noise is either un-modulated masking noise with a substantially constant level, or amplitude-modulated masking noise which is phase-shifted relative to the wind turbine noise and has a modulation depth which is less than the modulation depth of the wind turbine noise.
Claims18
A method of masking wind turbine noise from a wind turbine, the method comprising:
- generating masking noise to produce resultant noise with a modulation depth which is less than a modulation depth of the wind turbine noise and an average level which is greater than an average level of the wind turbine noise, wherein the masking noise is either un-modulated masking noise with a substantially constant level, or amplitude-modulated masking noise which is phase-shifted relative to the wind turbine noise and has a modulation depth which is less than the modulation depth of the wind turbine noise.
A wind turbine system comprising:
- a wind turbine configured to generate wind turbine noise;
- and
- a noise generator configured to generate masking noise to produce resultant noise with a modulation depth which is lower than a modulation depth of the wind turbine noise and an average level which is greater than an average level of the wind turbine noise, wherein the noise generator is configured to generate the masking noise as either un-modulated masking noise with a substantially constant level, or amplitude-modulated masking noise which is phase-shifted relative to the wind turbine noise and has a modulation depth which is less than the modulation depth of the wind turbine noise.
Dependencies are inferred from the claim text.