Across-channel interference can be modelled by subtracting off-frequency filter energy
Evidence
To simulate across-channel (AC) processes, two different versions of the monaural part of the model were used. The first version is based on the approach of Piechowiak et al. ( 2007 ). In this approach a weighted sum of modulation filters at the output of off-frequency auditory filters was subtracted from the corresponding modulation filters at the output of the on-frequency filter. In contrast to Piechowiak et al. ( 2007 ), a multi-auditory-channel version of this approach was used. Since the weighting is essentially based on the energy in the auditory filters it will be referred to as the energy-based AC model in the following. The second version of across-channel processing is based on the assumption that modulation in off-frequency auditory filters channels hampers the processing of the modulation filters tuned to the corresponding modulation frequency in the on-frequency auditory channel. This detrimental effect is realised by assuming that modulation frequencies adjacent to the modulation created by the masker-interferer distance could not be processed. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3473 (
#corroborates, via linked claim)
Categorization
- corroborated: 2 independent passages support this claim
- XREF: connects to: Modulation-frequency-specific disruption captures interferer masking effects better than energy models; Modulation in off-frequency channels can suppress on-frequency modulation processing — Dijk, Pim van, Physiology, Psychoacoustics and…, 3473; Masking interference is strongest when interferer and target match spectral distance from the masker
Broader Connections
- Modulation in off-frequency channels can suppress on-frequency modulation processing
#corroborates(0.82) — Dijk, Pim van, Physiology, Psychoacoustics and…, 3473 - Masking interference is strongest when interferer and target match spectral distance from the masker
#expands(0.75)