| Anderson, M. C., Stephenson, J. H., Zawodny, N. S., and Gee, K. L., "Characterization of the effects of ground boards on acoustic signals," 178th Meeting of the ASA, San Diego, California, 2 - 6 December, 2019. DOI |
| Anderson, M. C., Stephenson, J. H., Zawodny, N. S., and Gee, K. L., "Characterizing the Effects of Two Ground-based Outdoor Microphone Configurations," Proceedings of Meetings on Acoustics, Vol. 39, No. 1, 2 - 6 December, 2019. DOI NTRS |
| Aumann, A. R., and Rizzi, S. A., "Auralization using NAF's Source Noise and Propagation application NAFSNaP," NASA Acoustics Software Training, Hampton, Virginia, 12 April, 2019. |
| Bahr, C. J., "Design and Use of a Microphone Phased Array for 14'x22' Closed Test Section Operations," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |
| Bahr, C. J., and Schultz, T., "Automated classification of transient contamination in stationary acoustic data," Experiments in Fluids, Vol. 60, No. 2, Article 31, February, 2019. DOI NTRS |
| Bertsch, L., Clark, I. A., Thomas, R. H., Sanders, L., and LeGriffon, I., "The Aircraft Noise Simulation Working Group (ANSWr) - Tool Benchmark and Reference Aircraft Results," AIAA Paper 2019-2539, 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, 20 - 23 May, 2019. DOI |
| Boucher, M. A., Krishnamurthy, S., Christian, A. W., and Rizzi, S. A., "Sound quality metric indicators of rotorcraft noise annoyance using multilevel regression analysis," 177th Meeting of the ASA, Louisville, Kentucky, 13 - 17 May, 2019. DOI |
| Boucher, M. A., Krishnamurthy, S., Christian, A. W., and Rizzi, S. A., "Sound quality metric indicators of rotorcraft noise annoyance using multilevel regression analysis," Proceedings of Meetings on Acoustics, Vol. 36, No. 1, 13 - 17 May, 2019. DOI NTRS |
| Boyd, D. D., "Rotorcraft Noise Optimization Update," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |
| Boyd, D. D., "UAM Noise Working Group Meeting - Sub Group 1: Tools and Technologies," NASA Urban Air Mobility Noise Working Group Meeting, Spring 2019, Hampton, Virginia, 11 April, 2019. |
| Boyd, D. D., and Lopes, L. V., "NASA's Available and Near-Term Prediction Toolset for UAM Noise Prediction," NASA Urban Air Mobility Noise Working Group Meeting, Fall 2019, Cleveland, Ohio, 24 October, 2019. |
| Brown, M. C., Jones, M. G., and Nark, D. M., "Investigation of Liner Axial Displacement in a Complex Acoustic Environment," AIAA Paper 2019-2566, 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, 20 - 23 May, 2019. DOI NTRS |
| Brown, M. C., Jones, M. G., Howerton, B. M., Syed, A., Shafer, L., Ichihashi, F., and Bowen, L., "Flow Resistance Comparative Study," NASA/TM-2019-220262, March, 2019. NTRS |
| Christian, A. W., Caston, J., and Greenwood, E., "Regarding the Perceptual Significance and Characterization of Broadband Components of Helicopter Source Noise," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |
| Christian, A. W., Caston, J., and Greenwood, E., "Regarding the Perceptual Significance and Characterization of Broadband Components of Helicopter Source Noise," VFS 75th Annual Forum, Philadelphia, Pennsylvania, 13 - 16 May, 2019. |
| Clark, I. A., Thomas, R. H., and Guo, Y., "Far Term Noise Reduction Roadmap for the NASA D8 and Single-Aisle Tube-and-Wing Aircraft Concepts," AIAA Paper 2019-2427, 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, 20 - 23 May, 2019. DOI NTRS |
| Clark, I. A., Thomas, R. H., and Guo, Y., "Far Term Noise Reduction Roadmap for the NASA D8 and Single-Aisle Tube-and-Wing Aircraft Concepts," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |
| Doty, M. J., "Government Viewpoints Panel - Present and Future Considerations," National Academy of Engineering TQA Workshop, Washington, D.C., 12 - 13 December, 2019. |
| Greenwood, E., "Dynamic Replanning of Low Noise Rotorcraft Operations," VFS 75th Annual Forum, Philadelphia, Pennsylvania, 13 - 16 May, 2019. NTRS |
| Guo, Y., and Thomas, R. H., "On Aircraft Trailing Edge Noise," AIAA Paper 2019-2610, 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, 20 - 23 May, 2019. DOI |
| Guo, Y., and Thomas, R. H., "On Aircraft Trailing Edge Noise," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |
| Guo, Y., Thomas, R. H., Clark, I. A., and June, J. C., "Far-Term Noise Reduction Roadmap for the Midfuselage Nacelle Subsonic Transport," Journal of Aircraft, Vol. 56, No. 5, pp. 1893 - 1906, September - October, 2019. DOI |
| Hutcheson, F. V., Lockard, D. P., and O'Connell, M. D., "Design and Preliminary Testing of a Flap Side Edge Noise Reduction Device for the High-Lift Common Research Model," NASA Acoustics Technical Working Group Meeting, Fall 2019, Cleveland, Ohio, 22 -23 October, 2019. |
| Ingraham, D., Gray, J., and Lopes, L. V., "Gradient-Based Propeller Optimization with Acoustic Constraints," AIAA Paper 2019-1219, AIAA Scitech 2019 Forum, San Diego, California, 7 - 11 January, 2019. DOI NTRS |
| June, J. C., Thomas, R. H., Guo, Y., and Clark, I. A., "Far Term Noise Reduction Technology Roadmap for a Large Twin-Aisle Tube-and-Wing Subsonic Transport," AIAA Paper 2019-2428, 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, 20 - 23 May, 2019. DOI NTRS |
| June, J. C., Thomas, R. H., Guo, Y., and Clark, I. A., "Far Term Noise Reduction Technology Roadmap for a Large Twin-Aisle Tube-and-Wing Subsonic Transport," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |
| Krishnamurthy, S., and Rizzi, S. A., "Auralization of Amplitude Modulated Helicopter Flyover Noise," AIAA Paper 2019-2087, AIAA Scitech 2019 Forum, San Diego, California, 7 - 11 January, 2019. DOI NTRS |
| Krishnamurthy, S., and Rizzi, S. A., "Auralization of Amplitude Modulated Helicopter Flyover Noise," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |
| Krishnamurthy, S., Tuttle, B. C., and Rizzi, S. A., "Auralization of Unsteady Rotor Noise using a Solution to the Ffowcs Williams-Hawkings Equation," VFS 75th Annual Forum, Philadelphia, Pennsylvania, 13 - 16 May, 2019. NTRS |
| Lopes, L. V., "Aeroacoustic Software Introduction," NASA Acoustics Software Training, Hampton, Virginia, 12 April, 2019. |
| Lopes, L. V., "ANOPP2 Training," NASA Acoustics Software Training, Hampton, Virginia, 12 April, 2019. |
| Lopes, L. V., Nielsen, E. J., and Diskin, B., "Adjoint-based Aeroacoustic Design Optimization using CFD," VFS 75th Annual Forum, Philadelphia, Pennsylvania, 13 - 16 May, 2019. |
| Merino-Martínez, R., Sijtsma, P., Snellen, M., Ahlefeldt, T., Antoni, J., Bahr, C. J., Blacodon, D., Ernst, D., Finez, A., Funke, S., Geyer, T. F., Haxter, S., Herold, G., Huang, X., Humphreys, W. M., Leclère, Q., Malgoezar, A., Michel, U., Padois, T., Pereira, A., Picard, C., Sarradj, E., Siller, H., Simons, D. G., and Spehr, C., "A review of acoustic imaging methods using phased microphone arrays," CEAS Aeronautical Journal, Vol. 10, No. 1, pp. 197 - 230, March, 2019. DOI |
| Pascioni, K. A., Rizzi, S. A., and Schiller, N. H., "Noise Reduction Potential of Phase Control for Distributed Propulsion Vehicles," AIAA Paper 2019-1069, AIAA Scitech 2019 Forum, San Diego, California, 7 - 11 January, 2019. DOI |
| Pascioni, K. A., Schiller, N. H., Zawodny, N. S., and Rizzi, S. A., "Tonal Noise Control Using Phased Rotors," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |
| Pettingill, N. A., and Zawodny, N. S., "Broadband Noise Prediction of Rotors and Propellers using a Semiempirical Method," NASA Acoustics Technical Working Group Meeting, Fall 2019, Cleveland, Ohio, 22 -23 October, 2019. |
| Pettingill, N. A., and Zawodny, N. S., "Identification and Prediction of Broadband Noise for a Small Quadcopter," VFS 75th Annual Forum, Philadelphia, Pennsylvania, 13 - 16 May, 2019. NTRS |
| Pettingill, N. A., and Zawodny, N. S., "Stacked Rotor Performance and Acoustic Tradeoffs in Hover and Forward Flight," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. NTRS |
| Rafaelof, M., Christian, A. W., Shepherd, K. P., Rizzi, S. A., and Stephenson, J. H., "Audibility of Multiple, Low-Frequency Tonal Signals in Noise," NASA/TM-2019-220398, September, 2019. NTRS |
| Rafaelof, M., Christian, A. W., Shepherd, K. P., Rizzi, S. A., and Stephenson, J. H., "Characterization of Low Frequency Auditory Filters," NASA/TM-2019-220120, January, 2019. NTRS |
| Rafaelof, M., Christian, A. W., Shepherd, K. P., Rizzi, S. A., and Stephenson, J. H., "Establishing an audibility sensitivity rule for low-frequency tone complexes in noise," 178th Meeting of the ASA, San Diego, California, 2 - 6 December, 2019. DOI |
| Rizzi, S. A., "Auralization of Noise of Future Air Vehicles," Langley Alumni Association Meeting, Hampton, Virginia, 12 February, 2019. |
| Rizzi, S. A., "UNWG Subgroup 3 (Metrics) Status Report," NASA Urban Air Mobility Noise Working Group Meeting, Spring 2019, Hampton, Virginia, 11 April, 2019. NTRS |
| Rizzi, S. A., "Urban Air Mobility Operational Fleet Noise Assessment," NASA Acoustics Technical Working Group Meeting, Fall 2019, Cleveland, Ohio, 22 -23 October, 2019. |
| Rizzi, S. A., and Huff, D. L., "UAM Noise Working Group - Status of White Paper," NASA Urban Air Mobility Noise Working Group Meeting, Fall 2019, Cleveland, Ohio, 24 October, 2019. |
| Rizzi, S. A., and Huff, D. L., "UNWG Overview of Executive Committee Activities," NASA Urban Air Mobility Noise Working Group Meeting, Spring 2019, Hampton, Virginia, 11 April, 2019. |
| Rizzi, S. A., and Sahai, A. K., "Auralization of air vehicle noise for community assessment," CEAS Aeronautical Journal, Vol. 10, No. 1, pp. 313 - 334, March, 2019. DOI NTRS |
| Rizzi, S. A., Christian, A. W., and Rafaelof, M., "A Laboratory Method for Assessing Audibility and Localization of Rotorcraft Fly-In Noise," Journal of the American Helicopter Society, Vol. 64, No. 1, January, 2019. DOI |
| Rizzi, S. A., Zawodny, N. S., and Pettingill, N. A., "On the use of Acoustic Wind Tunnel Data for the Simulation of sUAS Flyover Noise," AIAA Paper 2019-2630, 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, 20 - 23 May, 2019. DOI NTRS |
| Sanders, L., Thomas, R. H., Bertsch, L., LeGriffon, I., Clark, I. A., June, J. C., and Lorteau, M., "The Aircraft Noise Simulation Working Group (ANSWr) – V-2 Aircraft Results," AIAA Paper 2019-2540, 25th AIAA/CEAS Aeroacoustics Conference, Delft, The Netherlands, 20 - 23 May, 2019. DOI |
| Schiller, N. H., Pascioni, K. A., and Zawodny, N. S., "Tonal Noise Control using Rotor Phase Synchronization," VFS 75th Annual Forum, Philadelphia, Pennsylvania, 13 - 16 May, 2019. NTRS |
| Stephenson, J. H., Weitsman, D., and Zawodny, N. S., "Effects of flow recirculation on unmanned aircraft system (UAS) acoustic measurements in closed anechoic chambers," The Journal of the Acoustical Society of America, Vol. 145, No. 3, pp. 1153 - 1155, March, 2019. DOI |
| Thomas, R. H., "Overview of ANOPP Development Status," NASA-FAA Meeting, Washington, D.C., 10 June, 2019. |
| Thomas, R. H., Guo, Y., Clark, I. A., June, J. C., Rawls, J. W., and Pope, D. S., "PAA and Aircraft System Noise Team Overview of Research for the AATT Project," NASA Acoustics Technical Working Group Meeting, Fall 2019, Cleveland, Ohio, 22 -23 October, 2019. |
| Watts, M. E., Greenwood, E., Smith, C. D., and Stephenson, J. H., "Noise Abatement Flight Test Data Report," NASA/TM-2019-220264, March, 2019. |
| Weitsman, D., Stephenson, J. H., and Zawodny, N. S., "Effects of Flow Recirculation on Acoustic Measurements of Rotary-Wing UAS in Closed Anechoic Chambers," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |
| Whiteside, S. K., Zawodny, N. S., Fei, X., Pettingill, N. A., Patterson, M. D., and Rothhaar, P. M., "An Exploration of the Performance and Acoustic Characteristics of UAV-Scale Stacked Rotor Configurations," AIAA Paper 2019-1071, AIAA Scitech 2019 Forum, San Diego, California, 7 - 11 January, 2019. DOI NTRS |
| Zawodny, N. S., "NASA Experimental Validation Databases for UAM Applications," NASA Urban Air Mobility Noise Working Group Meeting, Fall 2019, Cleveland, Ohio, 24 October, 2019. |
| Zawodny, N. S., "Preliminary Analysis of Twin Propeller Acoustic Measurements in the LSAWT," NASA Acoustics Technical Working Group Meeting, Spring 2019, Hampton, Virginia, 9 - 10 April, 2019. |