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Markus Strasser's avatar

Great write up. Thank you

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RDM's avatar

The wavelet makes sense - real sounds have finite durations/envelopes. So, cool.

The Gabor confused me for a bit until i was reminded it captures phase info a fourier won't/can't. Phase would be important for binaural location.

if so, I'd expect bat receptors to be different, even after accounting for frequency differences...

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galen's avatar

You can get (global) phase from a Fourier transform, what phase information are you referring to? If you wanted to compare the relative phase of signals this could still be done with a FT. The main difference between a Fourier and wavelet transform (at least for our purposes here) is locality.

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RDM's avatar

Interesting. Thanks. What do you suppose is the physical mechanism in the ear that provides the phase spectrum alongside the frequency spectrum?

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galen's avatar

Super interesting question, I'd like to know too! Unfortunately this is not my area so I'd ask someone who works on audition, but I can point you to some classic papers on sound localization in owl (https://pubmed.ncbi.nlm.nih.gov/40793557/) and gerbil (https://pubmed.ncbi.nlm.nih.gov/12037566/).

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RDM's avatar

Thanks for your thought-provoking post!

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