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Exponential spectro-temporal modulation generation
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 physio...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Acoustical Society of America
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8097710/ https://www.ncbi.nlm.nih.gov/pubmed/33765775 http://dx.doi.org/10.1121/10.0003604 |
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author | Stavropoulos, Trevor A. Isarangura, Sittiprapa Hoover, Eric C. Eddins, David A. Seitz, Aaron R. Gallun, Frederick J. |
author_facet | Stavropoulos, Trevor A. Isarangura, Sittiprapa Hoover, Eric C. Eddins, David A. Seitz, Aaron R. Gallun, Frederick J. |
author_sort | Stavropoulos, Trevor A. |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-8097710 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Acoustical Society of America |
record_format | MEDLINE/PubMed |
spelling | pubmed-80977102021-05-05 Exponential spectro-temporal modulation generation Stavropoulos, Trevor A. Isarangura, Sittiprapa Hoover, Eric C. Eddins, David A. Seitz, Aaron R. Gallun, Frederick J. J Acoust Soc Am Psychological and Physiological Acoustics 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. Acoustical Society of America 2021-03 2021-03-02 /pmc/articles/PMC8097710/ /pubmed/33765775 http://dx.doi.org/10.1121/10.0003604 Text en © 2021 Author(s). 0001-4966/2021/149(3)/1434/10 https://creativecommons.org/licenses/by/4.0/All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ). |
spellingShingle | Psychological and Physiological Acoustics Stavropoulos, Trevor A. Isarangura, Sittiprapa Hoover, Eric C. Eddins, David A. Seitz, Aaron R. Gallun, Frederick J. Exponential spectro-temporal modulation generation |
title | Exponential spectro-temporal modulation generation |
title_full | Exponential spectro-temporal modulation generation |
title_fullStr | Exponential spectro-temporal modulation generation |
title_full_unstemmed | Exponential spectro-temporal modulation generation |
title_short | Exponential spectro-temporal modulation generation |
title_sort | exponential spectro-temporal modulation generation |
topic | Psychological and Physiological Acoustics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8097710/ https://www.ncbi.nlm.nih.gov/pubmed/33765775 http://dx.doi.org/10.1121/10.0003604 |
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