NoiseNoise, OccupationalHearing Loss, Noise-InducedHabituation, PsychophysiologicNeuroma, AcousticCorticosteroneRestraint, PhysicalPituitary-Adrenal SystemAcoustic StimulationHypothalamo-Hypophyseal SystemSignal-To-Noise RatioEar Protective DevicesAuditory ThresholdAircraftPerceptual MaskingArtifactsSound SpectrographyStochastic ProcessesRailroadsAudiometryAlgorithmsPsychoacousticsSpeech PerceptionAudiometry, Pure-ToneAuditory PerceptionSignal Detection, PsychologicalHearingSensory ThresholdsLoudness PerceptionMotor VehiclesComputer SimulationSpeech IntelligibilityAutomobilesAcousticsAudiometry, SpeechModels, NeurologicalTinnitusSpeech Reception Threshold TestNormal DistributionEvoked Potentials, Auditory, Brain Stem