Welcome to Vibrationdata Airport & Aircraft Noise Page

Tutorials Airport and Aircraft Noise Boeing 727 & 747 SPL Graphs, Arizona State University Course Notes: 747.pdf Wyle, Status of Low-Frequency Aircraft Noise Research and Mitigation: LFN1.pdf Aircraft Noise (slide presentation): turbine_noise.pdf Antoine, Aircraft Noise Overview (slide presentation): aircraft_noise.pdf Getting to Grips with Aircraft Noise:  Airbus_AircraftNoise.pdf California Airport Land Use Planning Handbook, Measuring Airport Noise: CA_airportnoise.pdf  U.S. Department of Transportation, Federal Aviation Administration, Advisory Circular, 36-1H, 2001:  ac36-1h.pdf Attachment E: Noise Analysis of Taxi and Queuing Alternatives for the Centerfield Taxiway at Logan International Airport, HMMH Report No. 300280.006, May 2006:  Attach_E_Ph2_noise_report_26May2006.pdf Jet Aircraft Fuselage External Fluctuating Pressure During Cruise: aircraft_fuselage_spl.pdf Apoorv Ravindran, Investigation of Inverse Acoustical Charaterization of Porous Materials Used in Aircraft Noise Control Application: t07106.pdf Aeroacoustics of Flight Vehicles: Theory and Practice. Volume 2: Noise Control NASA-RP-1258-VOL-2, L-16926-VOL-2, NAS 1.61:1258-VOL-2, WRDC-TR-90-3052-VOL-2:  aeroacoustics_flight_vehicles_II.pdf Sonic Booms Sonic Booms, USAF Fact Sheet 96-03: SBFact.pdf FAA Sonic Boom Noise and Overpressure: sonicnoise.pdf Joseph E. Cates & B. Sturtevant, Seismic detection of sonic booms: seismicboom.pdf Predicting Launch Vehicle and Plume Sonic Boom using PCBoom3, Kenneth J. Plotkin, Wyle Laboratories: PCBoom3.pdf News Item: Navy Jets Cause Sonic Boom over Tampa. Registers as magnitude 2.7 quake: Tampa_sonic.pdf Study Notes on Overpressure & Sonic Booms: overpressure_notes.pdf Aircraft Shock & Vibration See: Aircraft  Newsletters with Aircraft Acoustic Articles Issue Feature Articles August 2011 XF-84H Turboprop Aircraft Aircraft Landing Shock Turbofan Engine Buzz-Saw Noise March 2006 Gobi_sand.mp3 Sputnik1.wav Sputnik1b.wav Booming Sand Dunes and Beaches   Vibration in Naval Aviation    Sputnik Beep Acoustic Analysis    January 2006 Stuka.wav Silver_Comet.mp3 Stuka Dive Bomber Siren   Lockheed C130J Hercules Vibration   Model Rocket Liftoff Acoustics     IIT Tube   April 2003 Apache Helicopter Noise. This article includes Fourier transforms of acoustic data that reveal the blade passing frequency and harmonics of each rotor.  February 2003 1. Space Shuttle Columbia Infrasound 2. Snapping Shrimp Acoustics  July 2002 Space Shuttle Acoustics, Overpressure, and Vibration  May 2002 1. Acoustic Reverberant Chamber 2. Bolides  April 2002 1. Quartz Crystal Microbalances 2. Sonic Booms 3. Triangle Sound and Vibration

Software	Executable	Source
Pink noise generator.	pink.exe	pink.cpp
Transmission loss through a plenum chamber.	plenum.exe	plenum.cpp
Natural frequencies of acoustic modes.	acoustic.exe	_
Natural frequencies of rooms modes.	room_modes.exe	room_modes.cpp
Acoustic natural frequencies inside a cylinder.	cylinder.exe	cylinder.cpp
Calculation of a sound pressure level from a pressure time history.	SPL.exe	SPL.cpp
Calculation of a sound pressure level from a pressure power spectral density.	psd_to_spl.exe	psd_to_spl.cpp
Calculation of a pressure power spectral density from a sound pressure level.	spl_to_psd.exe	spl_to_psd.cpp
Add two SPLs.	add_SPLs.exe	add_SPLs.cpp
Overall dB level from SPL or similar function.	dB_RMS.exe	dB_RMS.cpp
Calculate a full octave or a one-third SPL from an SPL which has arbitrary frequencies, such as an interpolated curve.	spl_from_curve.exe	spl_from_curve.cpp
Speed of sound calculator.	speed.exe	_
Free-field acoustic radiation in a hemisphere pattern.	hemisphere.exe	hemisphere.cpp
Transmission loss through an expanded pipe.	expanded_pipe.exe	expanded_pipe.cpp
Transmission loss via the mass law.	mass_law.exe	mass_law.cpp
Doppler shift	doppler.exe	doppler.cpp
Frequency, Wavelength, Wavenumber, Wave Speed, c=(f )(lambda), Calculator	frequency_wavelength.exe	-

YouTube Video The Nature of Sound (1948) http://www.youtube.com/watch?v=JNBlEagFroU

Acoustic Books & Software