[ exact phrase in "" ]

[ including uploaded files ]


View titles only
List all documents, ordered…

By Title

By Author

View PDF, DOC, PPT, and XLS files on line
Weekly updates

Keep Wind Watch online and independent!

Donate $10

Donate $5


Add NWW documents to your site (click here)

Resource Documents by Manwell, James

Rogers, Anthony; Manwell, James; and Wright, Sally
Wind Turbine Acoustic Noise
The human response to sounds measured in decibels has the following characteristics: Except under laboratory conditions, a change in sound level of 1 dB cannot be perceived. Doubling the energy of a sound source corresponds to a 3 dB increase. Outside of the laboratory, a 3 dB change in sound level is considered a barely discernible difference. A change in sound level of 5 dB will typically result in a noticeable community response. A 6 dB increase is equivalent to . . . Complete article »

Also try:
Search all of documents for "Manwell, James".
Search entire site for "Manwell, James".

Get the Facts
© National Wind Watch, Inc.
Use of copyrighted material adheres to Fair Use.
"Wind Watch" is a registered trademark.