Sustained sound beyond about 200 ms adds no further loudness

Evidence

The loudness percept requires some time to build up. The loudness level caused by a 2-kHz tone burst is shown in Figure 10.16. When the length of the burst decreases from 100 ms, the loudness decreases 10 phones each time the length is decreased to one tenth, indicating that the loudness percept is formed by integrating sound energy over time. This operation performed by our hearing is called temporal integration. For a sound burst lasting longer than 200 ms, loudness no longer increases (Fastl and Zwicker, 2007). — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1171 (#exemplifies, via linked claim)

Loudness is mainly the perceptual correlate of sound intensity, which is usually expressed in dB SPL as sound pressure level on a logarithmic scale. However, loudness judgments are also affected by several other variables, including physical sound parameters like e.g. duration, spectral content and temporal modulation as well many more acoustic and non-acoustic factors, including the particular task or context and personal factors like the individual hearing status (Florentine et al. — Dijk, Pim van, Physiology, Psychoacoustics and…, 2610 (#expands, via linked claim)

Categorization

• XREF: connects to: Hearing forms loudness by integrating sound energy over about 100-200 ms — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1171; Hearing integrates sound intensity over a fixed 200 ms window; Loudness depends on more than physical sound intensity alone — Dijk, Pim van, Physiology, Psychoacoustics and…, 2610

Related

• Hearing integrates sound intensity over a fixed 200 ms window (similarity 0.96)
• Hearing forms loudness by integrating sound energy over about 100-200 ms (similarity 0.95)
• Hearing thresholds are defined for steady tones lasting over 100 ms (similarity 0.92)
• Loudness develops over time after a sound ends, so later noise can interrupt it (similarity 0.91)
• Loudness halves for every tenfold decrease in tone duration below 100 ms (similarity 0.88)
• Perceived loudness of time-varying sounds is set by short-time peak values. (similarity 0.88)
• Loudness perception takes time to develop and so can be interrupted by later sounds (similarity 0.88)
• Loudness depends on more than physical sound intensity alone (similarity 0.87)
• Sounds shorter than 200 ms are perceived quieter, scaled to burst length (similarity 0.87)
• Sounds under 200 milliseconds need more amplitude to be perceived equally loud (similarity 0.87)
• Loudness models need 100-200 ms time constants to capture temporal integration and post-masking. (similarity 0.87)
• Time-varying sound loudness is set by integrated loudness peaks, not moment-to-moment level (similarity 0.87)
• Loudness depends on frequency, angle, duration, and envelope, not just level (similarity 0.87)
• Short sounds decay in perceived loudness faster than long sounds. (similarity 0.85)
• Tone-burst loudness rises 10 phon per tenfold duration up to 100 ms, then plateaus. (similarity 0.85)

Broader Connections

• Hearing forms loudness by integrating sound energy over about 100-200 ms #exemplifies (0.95) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1171
• Hearing integrates sound intensity over a fixed 200 ms window #qualifies (0.90)
• Loudness depends on more than physical sound intensity alone #expands (0.80) — Dijk, Pim van, Physiology, Psychoacoustics and…, 2610