Subjective and physical duration stay proportional only above about 100 ms

Evidence

This proportionality is effective over a wide range, starting at large durations of 3 s down to a duration of about 100 ms. Below that physical duration, subjective duration deviates from this proportionality with the tendency that subjective duration decreases less than physical duration. However, these results may be influenced by the fact that reducing the duration of the I-kHz tone produces a different spectrum. Therefore, white noise was used to produce shorter sound bursts without changing the spectrum. For large durations, white-noise bursts show the same proportionality between physical and subjective duration as found for I-kHz tones. The physical duration of white noise can be reduced to 0.3 ms without much influence on the 0. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1478

Categorization

• QUESTION: The text cuts off mid-point on what happens below 0.3 ms — worth locating the continuation.