Linear motion of a harmonic sound source was simulated for various trajectory paths. The acoustic signal was processed with frequency and intensity changes because of Doppler shifts in frequency, overall intensity changes, and atmospheric absorption. While listening to these sounds over headphones, four participants were asked to make magnitude estimations of the sound source speed under various combinations of motion effects. The frequency and intensity changes were found to contribute to the ability of the listeners to judge sound source speed. Inclusion of these motion attributes produced a veridical simulation of sound source motion.:
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