Publication: Exponential spectro-temporal modulation generation
Issued Date
2021-03-01
Resource Type
ISSN
15208524
00014966
00014966
Other identifier(s)
2-s2.0-85101955683
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of the Acoustical Society of America. Vol.149, No.3 (2021), 1434-1443
Suggested Citation
Trevor A. Stavropoulos, Sittiprapa Isarangura, Eric C. Hoover, David A. Eddins, Aaron R. Seitz, Frederick J. Gallun Exponential spectro-temporal modulation generation. Journal of the Acoustical Society of America. Vol.149, No.3 (2021), 1434-1443. doi:10.1121/10.0003604 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/75854
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Exponential spectro-temporal modulation generation
Abstract
Traditionally, real-time generation of spectro-temporally modulated noise has been performed on a linear amplitude scale, partially due to computational constraints. Experiments often require modulation that is sinusoidal on a logarithmic amplitude scale as a result of the many perceptual and physiological measures which scale linearly with exponential changes in the signal magnitude. A method is presented for computing exponential spectro-temporal modulation, showing that it can be expressed analytically as a sum over linearly offset sidebands with component amplitudes equal to the values of the modified Bessel function of the first kind. This approach greatly improves the efficiency and precision of stimulus generation over current methods, facilitating real-time generation for a broad range of carrier and envelope signals.