The loudness of sonic booms and other impulsive sounds

J. Sound Vz%.(1966) 3 (2) 216

LETTERS

THE LOUDNESS

TO THE EDITOR

OF SONIC BOOMS AND OTHER

IMPULSIVE SOUNDS

In our paper “The Loudness of Sonic Booms and Other Impulsive Sounds”, J. Sound WA, 1965, z (3) 249-256, preliminary experiments suggested that a 400 c/s sinusoidal tone, in comparison with a N-wave, was a good deal louder than should be expected from a consideration of weighted energy. Subsequent experiments have shown that there is hardly any discrepancy between theory and practice. The last paragraph in section 4 should read “This means that the amplitude of the steady tone would be 24.2 dB below the maximum pressure of the N-wave. The experimental results gave a difference of 26 dB. This suggests that the concept of weighted energy applies also, with reasonable accuracy, to bursts of tone provided their duration is within a range where loudness is proportional to duration.”

Institute of Sound and Vibration Research, The University of Southampton, Hampshire, Received 30 September

E.E. ZEPLER J. R.P. HAREL England

1964

216