Exponential spectro-temporal modulation generation.
Exponential spectro-temporal modulation generation.
复制标题
指数谱时间调制产生。
DOI:
10.1121/10.0003604
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发表时间:
2021-03
期刊:
影响因子:
--
通讯作者:
Gallun FJ
中科院分区:
文献类型:
--
作者:
Stavropoulos TA;Isarangura S;Hoover EC;Eddins DA;Seitz AR;Gallun FJ
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.
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