Dear Andrew, dear all, since this might be interesting to others as well, I’m replying to the list: I used Torsten Dau’s optimal chirp about 20 years ago in am MEG experiment and had asked him about a Matlab implementation, which he kindly shared under a license that allows distribution. Please find it attached. Since it is now archived on the list server, it will hopefully remain accessible in the future. A Python reimplementation will also be available in the slab toolbox in a week or two. Cheers, Marc
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====================== Dean, Dept of Life Sciences Professor of Neurobiology Department of Biology University of Leipzig Talstrasse 33 __o 04103 Leipzig _`\<,_ +493419736723 (+) / (+) & Department of Psychology University of Montreal Montreal, Quebec, Canada www.uni-leipzig.de/~neuro/ ====================== > On 17. Jan 2023, at 23:29, Andrew Levitsky <alevitsk@xxxxxxxxxxxxxx> wrote: > > Hello Auditory List, > > I have been working on a masked ABR experiment and wanted to generate a chirp that compensated for basilar membrane traveling wave delay, akin to what was discussed in the 2010 Chertoff (https://asa.scitation.org/doi/full/10.1121/1.3372756) and 2004 Fobel & Dau (https://asa.scitation.org/doi/pdf/10.1121/1.1787523) articles. While the articles do include the formulas that they used, I am not sure how to actually apply said formulas in Matlab, or if they are compatible with the built-in chirp function that Matlab has. Does anyone have any advice for generating them in our script? > > Thank you, > Andrew > > -- > Andrew Levitsky > Research Associate > Carnegie Mellon Neuroscience Institute > alevitsk@xxxxxxxxxxxxxx > M: (908) 420-9917