Adaptation, temporal integration, and post-masking can be simulated by one combined feedback element.

Evidence

Furthermore, the implementation is not restricted to splitting the processing in the aforementioned manner. For instance, adaptation, temporal integration, and post-masking can all be simulated effectively in a single element (Karjalainen, 1996), as shown in Figure 13.7. The element consists of an envelope detection unit (half-wave rectification and a low-pass filter), a multiplier controlling the amplification of the signal, two parallel low-pass filters utilizing different time constants, and a logarithmic feedback loop connecting the summed outputs of the low-pass filters to the multiplier. The primary output signal is the temporary loudness level (in phons or dBs) that can be transformed into specific loudness following Equation (10.2). — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1629

Categorization

• XREF: connects to: Adaptation, temporal integration, and post-masking can be simulated in a single auditory element. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1629