|
|
S. Voran, "Observations on Auditory Excitation and Masking Patterns,"
Proceedings of the 1995 Workshop on Applications of Signal Processing to Audio and Acoustics,
Mohonk Mountain House, New Platz, New York, October 1995.
Abstract:
Excitation patterns and masking patterns are used extensively in perceptual audio coders and quality assessment
algorithms. Numerous algorithms for calculating these patterns have been proposed. This paper provides
comparisons among the patterns generated by several of these algorithms. The comparisons are based on
audio program material, rather than tones and noise. Explored areas include synthesis functions, spreading
functions, masking indices, tonality measures, and the treatment of the absolute threshold of hearing.
Several mathematical relations are provided to characterize observations in these areas. Patterns from simpler
algorithms are considered as approximations to patterns from more complex algorithms, and the approximation
error is characterized. Results may be useful to those who apply auditory excitation or masking patterns
in their work.
Full Paper |
