Loudness models need 100-200 ms time constants to capture temporal integration and post-masking.

Evidence

The last processing block in the model shown in Figure 13.3 utilizes larger time constants to emulate temporal integration and post-masking phenomena. Moreover, the energy of the input signal is low-pass filtered using time constants of 100–200 ms to simulate temporal integration, and post-masking is emulated using the same time constant in a non-linear filter that effectively prolongs the recovery time of the processing block. This block is needed, for example, when modelling dynamic loudness perception. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1627

Categorization

• DEFINE: Specifies the concrete time constants (100–200 ms) used to emulate temporal integration and post-masking in auditory models.
• XREF: connects to: Modeling time-varying loudness requires emulating temporal integration and post-masking.; Static loudness models fail on time-variant sounds, motivating frame-based temporal integration models; Loudness processing acts as a temporal low-pass filter with about 45 ms integration time — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1295 (+3 more)

Broader Connections

• Hearing forms loudness by integrating sound energy over about 100-200 ms #corroborates (0.90) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1171
• Modeling time-varying loudness requires emulating temporal integration and post-masking. #expands (0.85)
• Static loudness models fail on time-variant sounds, motivating frame-based temporal integration models #corroborates (0.82)
• Loudness processing acts as a temporal low-pass filter with about 45 ms integration time #qualifies (0.80) — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1295
• Hearing integrates sound intensity over a fixed 200 ms window #corroborates (0.78)
• Sounds under 200 milliseconds need more amplitude to be perceived equally loud #expands (0.75) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 669