Temporal integration in low frequency auditory detection
Abstract
This report describes research undertaken to determine whether the Applied Technology Laboratory's existing procedures for predicting detection ranges of helicopters require revision to account for any potential differences in the time period over which people integrate signal energy at different frequencies. Findings disclosed that over the frequency range of 40 to 1000 Hz the integration time of the human auditory system was essentially invariant at approximately 240 milliseconds. Although no change to the ATL detection range program was required, incorporation of temporal effects was recommended to improve the generality of the program.
- Publication:
-
Final Report Bolt
- Pub Date:
- March 1981
- Bibcode:
- 1981bbn..reptR....H
- Keywords:
-
- Acoustics;
- Aircraft Noise;
- Auditory Perception;
- Detection;
- Helicopters;
- Audiometry;
- Noise Threshold;
- Sensitivity;
- Signal To Noise Ratios;
- Target Acquisition;
- Acoustics