  Auditory perception involves cues in the monaural auditory pathways as well
as binaural cues based on differences between the ears. So far auditory models
have often focused on either monaural or binaural experiments in isolation.
Although binaural models typically build upon stages of (existing) monaural
models, only a few attempts have been made to extend a monaural model by a
binaural stage using a unified decision stage for monaural and binaural cues.
In such approaches, a typical prototype of binaural processing has been the
classical equalization-cancelation mechanism, which either involves
signal-adaptive delays and provides a single channel output or can be
implemented with tapped delays providing a high-dimensional multichannel
output. This contribution extends the (monaural) generalized envelope power
spectrum model by a non-adaptive binaural stage with only a few, fixed output
channels. The binaural stage resembles features of physiologically motivated
hemispheric binaural processing, as simplified signal processing stages,
yielding a 5-channel monaural and binaural matrix feature "decoder" (BMFD). The
back end of the existing monaural model is applied to the 5-channel BMFD output
and calculates short-time envelope power and power features. The model is
evaluated and discussed for a baseline database of monaural and binaural
psychoacoustic experiments from the literature.
