Re: [Ifeffit] how to learn wavelet analysis
Hello Robert, Thank you, that helps a lot! Xinyu -原始邮件- 发件人:"Robert Gordon" 发送时间:2021-11-11 11:06:11 (星期四) 收件人: ifeffit@millenia.cars.aps.anl.gov 抄送: 主题: Re: [Ifeffit] how to learn wavelet analysis Try starting here: https://www.esrf.fr/UsersAndScience/Experiments/CRG/BM20/Software/Wavelets On 2021-11-10 6:48 p.m., 罗昕宇 wrote: Dear IFEFFIT members, I'm a fresh graduate student majoring in chemical engineering. I began to learn XAFS by myself one month ago. I bought and read the book XAFS for Everyone written by Dr. Calvin. I think I have got a clear image of how EXAFS works. Recently, I am attracted by the technique called Wavelet Analysis from literatures. It seems pretty powerful to correlate both temporal and frequency information, but something just went probably beyond my current knowledge base. I understand that a changeable window should be adapted to a make a trade-off between time and frequency, but I don't understand the logic that good time-resolution in high frequency is preferred while in low frequency a good frequency-resolution is better. I would appreciate it very much if you could answer my half-baked question and offer me with some learning material. Best regards Xinyu ___ Ifeffit mailing list ifef...@millenia.cars.aps.anl.govhttp://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit ___ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit
Re: [Ifeffit] how to learn wavelet analysis
Try starting here: https://www.esrf.fr/UsersAndScience/Experiments/CRG/BM20/Software/Wavelets On 2021-11-10 6:48 p.m., 罗昕宇 wrote: Dear IFEFFIT members, I'm a fresh graduate student majoring in chemical engineering. I began to learn XAFS by myself one month ago. I bought and read the book /XAFS for Everyone/ written by Dr. Calvin. I think I have got a clear image of how EXAFS works. Recently, I am attracted bythe technique called Wavelet Analysis from literatures. It seems pretty powerful to correlate both temporal and frequency information, but something just wentprobably beyond my current knowledge base. I understand that a changeable window should be adapted to a make a trade-off between time and frequency, but I don't understand the logic that good time-resolution in high frequency is preferred while in low frequency a good frequency-resolution is better. I would appreciate it very much if you could answer my half-baked question and offer me with some learning material. Best regards Xinyu ___ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe:http://millenia.cars.aps.anl.gov/mailman/options/ifeffit ___ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit
[Ifeffit] how to learn wavelet analysis
Dear IFEFFIT members, I'm a fresh graduate student majoring in chemical engineering. I began to learn XAFS by myself one month ago. I bought and read the book XAFS for Everyone written by Dr. Calvin. I think I have got a clear image of how EXAFS works. Recently, I am attracted by the technique called Wavelet Analysis from literatures. It seems pretty powerful to correlate both temporal and frequency information, but something just went probably beyond my current knowledge base. I understand that a changeable window should be adapted to a make a trade-off between time and frequency, but I don't understand the logic that good time-resolution in high frequency is preferred while in low frequency a good frequency-resolution is better. I would appreciate it very much if you could answer my half-baked question and offer me with some learning material. Best regards Xinyu___ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit
