@article {6552,
	title = {Extracting Blade-Vortex Interactions Using Continuous Wavelet Transforms},
	journal = {Journal of the American Helicopter Society},
	volume = {62},
	year = {2017},
	pages = {1-10},
	abstract = {<p>A framework for using continuous wavelet transforms to isolate and extract blade-vortex interaction noise from helicopter acoustic signals is described. The extraction method allows for the investigation of blade-vortex interactions independent of other sound sources. Experimentally acquired acoustic data from full-scale helicopter flyover tests are first transformed into time-frequency space through the wavelet transformation, with blade-vortex interactions identified and filtered by their high-amplitude, high-frequency impulsive content. The filtered wavelet coefficients are then used to create a pressure signal solely related to blade-vortex interactions. Analysis of a synthetic data set is conducted and shows that blade-vortex interactions can be accurately extracted so long as the blade-vortex interaction wavelet energy is comparable to the wavelet energy in the main rotor harmonic.</p>},
	author = {Stephenson, J. H. and C. E. Tinney},
    doi = {10.4050/JAHS.62.022001}
}

{"_id":"t38gLPCKwqz64RFtQ","bibbaseid":"stephenson-tinney-extractingbladevortexinteractionsusingcontinuouswavelettransforms-2017","authorIDs":["3Laxrgox7XYpAMYzB","5d4895fff7ecb4da0100002e","5e1f354a07379ade0100013b","5e1f36e907379ade01000182","5e66605e46e828de0100017f","5e66691b46e828de01000271","5e666bea46e828de01000297","apSkWogqFGbwbrTka"],"author_short":["Stephenson, J. H.","Tinney, C. E."],"bibdata":{"bibtype":"article","type":"article","title":"Extracting Blade-Vortex Interactions Using Continuous Wavelet Transforms","journal":"Journal of the American Helicopter Society","volume":"62","year":"2017","pages":"1-10","abstract":"<p>A framework for using continuous wavelet transforms to isolate and extract blade-vortex interaction noise from helicopter acoustic signals is described. The extraction method allows for the investigation of blade-vortex interactions independent of other sound sources. Experimentally acquired acoustic data from full-scale helicopter flyover tests are first transformed into time-frequency space through the wavelet transformation, with blade-vortex interactions identified and filtered by their high-amplitude, high-frequency impulsive content. The filtered wavelet coefficients are then used to create a pressure signal solely related to blade-vortex interactions. Analysis of a synthetic data set is conducted and shows that blade-vortex interactions can be accurately extracted so long as the blade-vortex interaction wavelet energy is comparable to the wavelet energy in the main rotor harmonic.</p>","author":[{"propositions":[],"lastnames":["Stephenson"],"firstnames":["J.","H."],"suffixes":[]},{"firstnames":["C.","E."],"propositions":[],"lastnames":["Tinney"],"suffixes":[]}],"doi":"10.4050/JAHS.62.022001","bibtex":"@article {6552,\r\n\ttitle = {Extracting Blade-Vortex Interactions Using Continuous Wavelet Transforms},\r\n\tjournal = {Journal of the American Helicopter Society},\r\n\tvolume = {62},\r\n\tyear = {2017},\r\n\tpages = {1-10},\r\n\tabstract = {<p>A framework for using continuous wavelet transforms to isolate and extract blade-vortex interaction noise from helicopter acoustic signals is described. The extraction method allows for the investigation of blade-vortex interactions independent of other sound sources. Experimentally acquired acoustic data from full-scale helicopter flyover tests are first transformed into time-frequency space through the wavelet transformation, with blade-vortex interactions identified and filtered by their high-amplitude, high-frequency impulsive content. The filtered wavelet coefficients are then used to create a pressure signal solely related to blade-vortex interactions. Analysis of a synthetic data set is conducted and shows that blade-vortex interactions can be accurately extracted so long as the blade-vortex interaction wavelet energy is comparable to the wavelet energy in the main rotor harmonic.</p>},\r\n\tauthor = {Stephenson, J. H. and C. E. Tinney},\r\n doi = {10.4050/JAHS.62.022001}\r\n}\r\n","author_short":["Stephenson, J. H.","Tinney, C. E."],"key":"6552","id":"6552","bibbaseid":"stephenson-tinney-extractingbladevortexinteractionsusingcontinuouswavelettransforms-2017","role":"author","urls":{},"metadata":{"authorlinks":{"tinney, c":"https://www.arlut.utexas.edu/gdl/publications/index.shtml"}},"downloads":0},"bibtype":"article","biburl":"https://wwwext.arlut.utexas.edu/gdl/publications/tinney-publications-revised6.bib","creationDate":"2019-08-05T20:47:59.884Z","downloads":0,"keywords":[],"search_terms":["extracting","blade","vortex","interactions","using","continuous","wavelet","transforms","stephenson","tinney"],"title":"Extracting Blade-Vortex Interactions Using Continuous Wavelet Transforms","year":2017,"dataSources":["uQNWbBdQaxZ74n7xB","HpWQKNyonwbCBxpGW","y7g9mDCLDAqJBSoaS","yFBzbGu4CipPYixch","cDHYQr8JPDnxrrMDW","dA4mBW6CuquibyiG2","vgRY4bTPZQbR7iNn9"]}